WO2015143021A1 - Lattice panel structure and method - Google Patents

Lattice panel structure and method Download PDF

Info

Publication number
WO2015143021A1
WO2015143021A1 PCT/US2015/021218 US2015021218W WO2015143021A1 WO 2015143021 A1 WO2015143021 A1 WO 2015143021A1 US 2015021218 W US2015021218 W US 2015021218W WO 2015143021 A1 WO2015143021 A1 WO 2015143021A1
Authority
WO
WIPO (PCT)
Prior art keywords
panel
holes
holes formed
mutually offset
tray table
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2015/021218
Other languages
French (fr)
Inventor
Francis Xavier GARING
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BE Aerospace Inc
Original Assignee
BE Aerospace Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BE Aerospace Inc filed Critical BE Aerospace Inc
Priority to CN201580013940.7A priority Critical patent/CN106103278B/en
Priority to CA2941749A priority patent/CA2941749C/en
Priority to JP2016556322A priority patent/JP6343024B2/en
Priority to EP15766032.5A priority patent/EP3119675B1/en
Publication of WO2015143021A1 publication Critical patent/WO2015143021A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N3/00—Arrangements or adaptations of other passenger fittings, not otherwise provided for
    • B60N3/001—Arrangements or adaptations of other passenger fittings, not otherwise provided for of tables or trays
    • B60N3/002—Arrangements or adaptations of other passenger fittings, not otherwise provided for of tables or trays of trays
    • B60N3/004—Arrangements or adaptations of other passenger fittings, not otherwise provided for of tables or trays of trays of foldable trays mounted on the back-rest
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
    • B64D11/06—Arrangements of seats, or adaptations or details specially adapted for aircraft seats
    • B64D11/0638—Arrangements of seats, or adaptations or details specially adapted for aircraft seats with foldable tables, trays or cup holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
    • B64D11/06—Arrangements of seats, or adaptations or details specially adapted for aircraft seats
    • B64D11/0649—Seats characterised by special features for reducing weight
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/40—Weight reduction

Definitions

  • This invention relates to a light weight panel structure that exhibits a three dimensional lattice structure fabricated from a homogenous material through a two sided or split draw manufacturing process such as machining, injection molding, casting or three dimensional printing, and a method of producing such panels.
  • Such three dimensional structures are most often associated with chemical structures formed from regular, periodic arrays of atoms and molecules, while two dimensional lattices are most often associated with structures or patterns of strips crossing each other with square or diamond-shaped spaces left between.
  • the three dimensional lattice panels according to the various aspects of the invention can be used for components such as tray tables and other components that require light weight and rigid performance. These structures will be particularly useful in aircraft, where weight reduction is an important factor in decreasing fuel consumption and improving aircraft performance.
  • the structure is characterized by a two dimensional pattern of holes formed on opposing sides, with the pattern on one side offset from the opposing side such that only parts of the holes on opposing sides overlap. This allows removal of material while leaving a series of support posts orthogonal to the machining tool direction or injection molding draw direction.
  • the combination of posts and thin material sections created by this geometry results in a three dimensional lattice structure that is rigid in both bending and torsion.
  • a three dimensional lattice panel structure that includes a panel having a multitude of mutually offset holes formed in a respective spaced-apart top and bottom of the panel that intersect to form voids with interspersed support posts interconnecting the top and bottom of the panel in areas not encompassed by the mutually offset holes.
  • the mutually offset holes are selected from the group consisting of circular, rectangular and hexagonal holes.
  • the mutually offset holes are the same shape and size.
  • the lattice panel is integrally formed.
  • a tray table for a passenger seat includes a three dimensional lattice panel structure forming a panel having a multitude of mutually offset holes formed in a respective spread-apart top and bottom of the panel and intersecting to form voids with interspersed support posts interconnecting the top and bottom of the panel in areas not encompassed by the mutually offset holes.
  • An imperforate cover is positioned over the top of the panel to provide a support surface for an occupant seated aft of the tray table, and a pair of arms is attached to the panel structure for mounting the panel structure to a seat positioned forward of the aft-seated occupant.
  • the multitude of mutually offset holes formed in the top of the panel are circular
  • the mutually offset holes formed in the bottom of the panel are circular
  • the multitude of mutually offset holes formed in the top of the panel and the mutually offset holes formed in the bottom of the panel intersect to form voids with interspersed support posts interconnecting the top and bottom of the panel in areas not encompassed by the mutually offset holes.
  • the support posts define in cross-section arcuate wall segments corresponding to the shape and position of arcuate portions of the holes formed in the top of the panel and the holes formed in the bottom of the panel.
  • the posts are spaced-apart around the periphery of the holes formed in the top of the panel and the holes formed in the bottom of the panel.
  • the holes formed in the top of the panel and the holes formed in the bottom of the panel define respective intermediate top and bottom panel portions that isolate the holes formed in the top of the panel from each other, and isolate the holes formed in the bottom of the panel from each other.
  • the posts define intermediate voids by which the holes formed in the top of the panel and the holes formed in the bottom of the panel communicate with each other.
  • a tray table for a passenger seat includes a three dimensional, integrally-formed lattice panel structure forming a panel having a multitude of mutually offset circular holes of the same shape and size formed in a respective top and bottom of the panel and intersecting to form voids with interspersed support posts interconnecting the top and bottom of the panel in areas not encompassed by the mutually offset holes.
  • the multitude of mutually offset holes formed in the top of the panel are circular, and the mutually offset holes formed in the bottom of the panel are circular.
  • the support posts define in cross-section arcuate wall segments corresponding to the shape and position of arcuate portions of the holes formed in the top of the panel and the holes formed in the bottom of the panel.
  • An imperforate cover is positioned over the top of the panel to provide a support surface for an occupant seated aft of the tray table, and an imperforate cover encloses the bottom of the panel.
  • a pair of arms are attached to the panel structure for mounting the tray table to a seat positioned forward of the aft-seated occupant.
  • the posts are spaced-apart around the periphery of the holes formed in the top of the panel and the holes formed in the bottom of the panel.
  • the holes formed in the top of the panel and the holes formed in the bottom of the panel define respective intermediate top and bottom panel portions that isolate the holes formed in the top of the panel from each other and isolate the holes formed in the bottom of the panel from each other.
  • the posts define intermediate voids by which the holes formed in the top of the panel and the holes formed in the bottom of the panel communicate with each other.
  • a panel structure comprising the steps of forming a multitude of holes in a top of the panel structure, and forming a multitude of holes in a bottom of the panel structure, wherein the holes in the bottom of the panel structure and the holes in the top of the panel structure are mutually and concentrically-offset intersect to form voids with interspersed support posts interconnecting the top and bottom of the panel in areas not encompassed by the mutually offset holes.
  • the step of forming the holes in the top and bottom includes the step of forming holes selected from the group consisting of circular, rectangular and hexagonal holes.
  • the step of forming the holes in the top and bottom includes the step of forming holes that are the same shape and size.
  • the step of forming the lattice panel includes the step of integrally forming the lattice panel.
  • the lattice panel is a table component of a tray table assembly adapted for use in an aircraft passenger cabin.
  • Figure 1 is a perspective view of an aircraft passenger seat including a tray table fabricated of a lattice panel according to one embodiment of the invention
  • Figure 2 is a top plan view of the lattice panel of the tray table shown in Figure 1;
  • Figure 3 is a perspective cross-sectional view illustrating where material is removed to form the lattice panel
  • Figure 4 is a top plan schematic view showing the structure of the lattice panel of Figures 1-3;
  • Figure 5 is a top plan schematic view showing an alternative structure of a lattice panel wherein the holes forming the lattice are rectangular;
  • Figure 6 is a top plan schematic view showing another alternative structure of a lattice panel wherein the holes forming the lattice are hexagonal.
  • an aircraft passenger seat 10 which includes a base 12, a seat bottom 14, seat back 16, head rest 18, arm rest 20 and a tray table 22 mounted in a conventional manner on a pair of arms 24, 26 and a cross-member 28.
  • the tray table includes a lattice panel 30 according to one embodiment of the invention overlaid with a thin plastic imperforate cover 32.
  • the tray table 22 is exemplary of many uses of the lattice panel 30 and is used by way of example only. Because of the substantial amount of material that is removed in the formation process, weight is substantially reduced while maintaining strength and rigidity.
  • the lattice panel 30 is formed of a multitude of holes 34 in a regular array on a top side 36, and which extend through the thickness of the panel 30 except to the extent that the holes 34 are offset with regard to holes 38 formed in the bottom side 40 of the panel 30.
  • the holes 38 are offset with respect to the holes 34 in the manner shown, leaving a multitude of spaced support posts 42, shown in Figure 3, which provide both light weight and rigidity to the panel 30.
  • the resulting structure has three distinct aspects: through voids where the holes 34 and 38 overlap, offset areas having the thiclaiess of the top 36 and bottom 40 where the holes 34 and 38 do not overlap, and support posts 42 which are integral to the panel 30 and extend from the top surface of the top 36 to the bottom surface of the bottom 40.
  • the support posts 42 are orthogonal, i.e., are axially mutually perpendicular to the machining tool direction or injection molding draw direction.
  • the panel 30 can be left bare to allow free air flow through its thiclaiess.
  • the tray table 22 of Figure 1 the panel 30 may be provided with a cover, such as cover 32 on one or both sides to form an imperforate structure.
  • the cover 32 may be attached by an adhesive, by shrink-wrapping or any other suitable method.
  • FIG. 4 The above-described geometry is further illustrated in Figure 4, where the two dimensional hole patterns are shown to generate the desired three dimensional geometry.
  • the solid lines represent the holes 34 in the top 36 and the dashed lines represent holes 38 created from the bottom 40.
  • the areas not encompassed by either a solid or dashed profile represent the support posts 42.
  • FIG. 5 An alternative geometry is illustrated in Figure 5, again shown for purposes of illustration as a tray table 50 fabricated of a panel lattice panel 52.
  • the panel 52 is formed of holes 54 in the top of the panel 52, shown in solid lines, and is offset from holes 56, shown by dashed lines, in the bottom of the panel 52.
  • the areas not encompassed by either solid or dashed lines represent support posts 58.
  • the optional cover 59 is also shown.
  • Figure 6 A further alternative geometry is illustrated in Figure 6, again shown for purposes of illustration as a tray table 60 fabricated of a panel lattice panel 62.
  • the panel 62 is formed of holes 64 in the top of the panel 62, shown in solid lines, and is offset from holes 66, shown by dashed lines, in the bottom of the panel 62.
  • the areas not encompassed by either solid or dashed lines represent support posts 68.
  • the optional cover 70 is also shown.
  • lattice panel structure is not critical to a specific formation technique, and while it is believed that formation techniques that result in an integral, one-piece structure is optimal, formation of two or more separate components that are then assembled to form the lattice structure is accommodated within the scope of the invention.
  • the term "hole” means any opening, void or cavity having either a circular or non-circular shape or profile, and extending either partially through or completely through the thickness of the structure.
  • the structure can be produced by any suitable manufacturing process, such as by molding, casting, machining, laser-cutting, 3 -dimensional printing, or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
  • Passenger Equipment (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

A three dimensional lattice panel structure having a multitude of mutually offset holes formed in a respective top and bottom of the panel and intersecting to form voids with interspersed support posts interconnecting the top and bottom of the panel in areas not encompassed by the mutually offset holes.

Description

LATTICE PANEL STRUCTURE AND METHOD
TECHNICAL FIELD AND BACKGROUND OF THE INVENTION
This invention relates to a light weight panel structure that exhibits a three dimensional lattice structure fabricated from a homogenous material through a two sided or split draw manufacturing process such as machining, injection molding, casting or three dimensional printing, and a method of producing such panels. Such three dimensional structures are most often associated with chemical structures formed from regular, periodic arrays of atoms and molecules, while two dimensional lattices are most often associated with structures or patterns of strips crossing each other with square or diamond-shaped spaces left between. The three dimensional lattice panels according to the various aspects of the invention can be used for components such as tray tables and other components that require light weight and rigid performance. These structures will be particularly useful in aircraft, where weight reduction is an important factor in decreasing fuel consumption and improving aircraft performance.
The structure is characterized by a two dimensional pattern of holes formed on opposing sides, with the pattern on one side offset from the opposing side such that only parts of the holes on opposing sides overlap. This allows removal of material while leaving a series of support posts orthogonal to the machining tool direction or injection molding draw direction. The combination of posts and thin material sections created by this geometry results in a three dimensional lattice structure that is rigid in both bending and torsion. SUMMARY OF THE INVENTOR
It is therefore an object of the present invention to provide a lattice panel structure that can be produced out of a single homogenous material instead of being a composite structure that is bonded, welded, or otherwise fixed together.
It is another object of the present invention to provide a lattice panel structure that can be produced using a single process, such as machining, injection molding, casting or three- dimensional printing, instead of requiring multiple production and assembly processes.
It is another object of the present invention to provide a lattice panel structure with mechanical properties that can be accurately duplicated since it is comprised of a single homogenous material.
It is another object of the present invention to provide a lattice panel structure that does not require use of any adhesives.
These and other objects and advantages of the invention are achieved by providing a three dimensional lattice panel structure, that includes a panel having a multitude of mutually offset holes formed in a respective spaced-apart top and bottom of the panel that intersect to form voids with interspersed support posts interconnecting the top and bottom of the panel in areas not encompassed by the mutually offset holes.
According to another embodiment of the invention, the mutually offset holes are selected from the group consisting of circular, rectangular and hexagonal holes.
According to another embodiment of the invention, the mutually offset holes are the same shape and size.
According to another embodiment of the invention, the lattice panel is integrally formed. According to another embodiment of the invention, a tray table for a passenger seat is provided that includes a three dimensional lattice panel structure forming a panel having a multitude of mutually offset holes formed in a respective spread-apart top and bottom of the panel and intersecting to form voids with interspersed support posts interconnecting the top and bottom of the panel in areas not encompassed by the mutually offset holes. An imperforate cover is positioned over the top of the panel to provide a support surface for an occupant seated aft of the tray table, and a pair of arms is attached to the panel structure for mounting the panel structure to a seat positioned forward of the aft-seated occupant.
According to another embodiment of the invention, the multitude of mutually offset holes formed in the top of the panel are circular, the mutually offset holes formed in the bottom of the panel are circular, and the multitude of mutually offset holes formed in the top of the panel and the mutually offset holes formed in the bottom of the panel intersect to form voids with interspersed support posts interconnecting the top and bottom of the panel in areas not encompassed by the mutually offset holes. The support posts define in cross-section arcuate wall segments corresponding to the shape and position of arcuate portions of the holes formed in the top of the panel and the holes formed in the bottom of the panel.
According to another embodiment of the invention, the posts are spaced-apart around the periphery of the holes formed in the top of the panel and the holes formed in the bottom of the panel.
According to another embodiment of the invention, the holes formed in the top of the panel and the holes formed in the bottom of the panel define respective intermediate top and bottom panel portions that isolate the holes formed in the top of the panel from each other, and isolate the holes formed in the bottom of the panel from each other. The posts define intermediate voids by which the holes formed in the top of the panel and the holes formed in the bottom of the panel communicate with each other.
According to another embodiment of the invention, a tray table for a passenger seat is provided that includes a three dimensional, integrally-formed lattice panel structure forming a panel having a multitude of mutually offset circular holes of the same shape and size formed in a respective top and bottom of the panel and intersecting to form voids with interspersed support posts interconnecting the top and bottom of the panel in areas not encompassed by the mutually offset holes. The multitude of mutually offset holes formed in the top of the panel are circular, and the mutually offset holes formed in the bottom of the panel are circular. The multitude of mutually offset holes formed in the top of the panel and the mutually offset holes formed in the bottom of the panel intersect to form voids with interspersed support posts interconnecting the top and bottom of the panel in areas not encompassed by the mutually offset holes. The support posts define in cross-section arcuate wall segments corresponding to the shape and position of arcuate portions of the holes formed in the top of the panel and the holes formed in the bottom of the panel. An imperforate cover is positioned over the top of the panel to provide a support surface for an occupant seated aft of the tray table, and an imperforate cover encloses the bottom of the panel. A pair of arms are attached to the panel structure for mounting the tray table to a seat positioned forward of the aft-seated occupant.
According to another embodiment of the invention, the posts are spaced-apart around the periphery of the holes formed in the top of the panel and the holes formed in the bottom of the panel.
According to another embodiment of the invention, the holes formed in the top of the panel and the holes formed in the bottom of the panel define respective intermediate top and bottom panel portions that isolate the holes formed in the top of the panel from each other and isolate the holes formed in the bottom of the panel from each other. The posts define intermediate voids by which the holes formed in the top of the panel and the holes formed in the bottom of the panel communicate with each other.
According to a method according to the invention, a panel structure is formed, comprising the steps of forming a multitude of holes in a top of the panel structure, and forming a multitude of holes in a bottom of the panel structure, wherein the holes in the bottom of the panel structure and the holes in the top of the panel structure are mutually and concentrically-offset intersect to form voids with interspersed support posts interconnecting the top and bottom of the panel in areas not encompassed by the mutually offset holes.
In accordance with another embodiment of the invention, the step of forming the holes in the top and bottom includes the step of forming holes selected from the group consisting of circular, rectangular and hexagonal holes.
In accordance with another embodiment of the invention, the step of forming the holes in the top and bottom includes the step of forming holes that are the same shape and size.
In accordance with another embodiment of the invention, the step of forming the lattice panel includes the step of integrally forming the lattice panel.
In accordance with another embodiment of the invention, the lattice panel is a table component of a tray table assembly adapted for use in an aircraft passenger cabin.
BRIEF DESCRIPTION OF THE DRAWING FIGURES
The present invention is best understood when the following detailed description of the invention is read with reference to the accompanying drawings, in which: Figure 1 is a perspective view of an aircraft passenger seat including a tray table fabricated of a lattice panel according to one embodiment of the invention;
Figure 2 is a top plan view of the lattice panel of the tray table shown in Figure 1;
Figure 3 is a perspective cross-sectional view illustrating where material is removed to form the lattice panel;
Figure 4 is a top plan schematic view showing the structure of the lattice panel of Figures 1-3;
Figure 5 is a top plan schematic view showing an alternative structure of a lattice panel wherein the holes forming the lattice are rectangular; and
Figure 6 is a top plan schematic view showing another alternative structure of a lattice panel wherein the holes forming the lattice are hexagonal.
DETAILED DESCRIPTION OF THE PREFERRED EMOBIDMENT
Referring now specifically to the drawings, an aircraft passenger seat 10 is shown, which includes a base 12, a seat bottom 14, seat back 16, head rest 18, arm rest 20 and a tray table 22 mounted in a conventional manner on a pair of arms 24, 26 and a cross-member 28. The tray table includes a lattice panel 30 according to one embodiment of the invention overlaid with a thin plastic imperforate cover 32. The tray table 22 is exemplary of many uses of the lattice panel 30 and is used by way of example only. Because of the substantial amount of material that is removed in the formation process, weight is substantially reduced while maintaining strength and rigidity.
As is best shown in Figures 2 and 3, the lattice panel 30 is formed of a multitude of holes 34 in a regular array on a top side 36, and which extend through the thickness of the panel 30 except to the extent that the holes 34 are offset with regard to holes 38 formed in the bottom side 40 of the panel 30. The holes 38 are offset with respect to the holes 34 in the manner shown, leaving a multitude of spaced support posts 42, shown in Figure 3, which provide both light weight and rigidity to the panel 30. The resulting structure has three distinct aspects: through voids where the holes 34 and 38 overlap, offset areas having the thiclaiess of the top 36 and bottom 40 where the holes 34 and 38 do not overlap, and support posts 42 which are integral to the panel 30 and extend from the top surface of the top 36 to the bottom surface of the bottom 40. The support posts 42 are orthogonal, i.e., are axially mutually perpendicular to the machining tool direction or injection molding draw direction.
In appropriate applications the panel 30 can be left bare to allow free air flow through its thiclaiess. In other applications, for example, the tray table 22 of Figure 1, the panel 30 may be provided with a cover, such as cover 32 on one or both sides to form an imperforate structure. The cover 32 may be attached by an adhesive, by shrink-wrapping or any other suitable method.
The above-described geometry is further illustrated in Figure 4, where the two dimensional hole patterns are shown to generate the desired three dimensional geometry. The solid lines represent the holes 34 in the top 36 and the dashed lines represent holes 38 created from the bottom 40. The areas not encompassed by either a solid or dashed profile represent the support posts 42.
An alternative geometry is illustrated in Figure 5, again shown for purposes of illustration as a tray table 50 fabricated of a panel lattice panel 52. The panel 52 is formed of holes 54 in the top of the panel 52, shown in solid lines, and is offset from holes 56, shown by dashed lines, in the bottom of the panel 52. The areas not encompassed by either solid or dashed lines represent support posts 58. The optional cover 59 is also shown. A further alternative geometry is illustrated in Figure 6, again shown for purposes of illustration as a tray table 60 fabricated of a panel lattice panel 62. The panel 62 is formed of holes 64 in the top of the panel 62, shown in solid lines, and is offset from holes 66, shown by dashed lines, in the bottom of the panel 62. The areas not encompassed by either solid or dashed lines represent support posts 68. The optional cover 70 is also shown.
Other geometrical shapes may be utilized, including without limitation, triangular, ovoid, pentagonal, octagonal or any other suitable shape that permits formation of the three aspects of the structure discussed above. Formation of the lattice panel structure is not critical to a specific formation technique, and while it is believed that formation techniques that result in an integral, one-piece structure is optimal, formation of two or more separate components that are then assembled to form the lattice structure is accommodated within the scope of the invention.
As used herein, the term "hole" means any opening, void or cavity having either a circular or non-circular shape or profile, and extending either partially through or completely through the thickness of the structure. The structure can be produced by any suitable manufacturing process, such as by molding, casting, machining, laser-cutting, 3 -dimensional printing, or the like.
Similarly, while the embodiments disclosed in this application illustrate the invention with holes of the same shape and size in respective embodiments, lattices with regular arrays of holes of different shapes and/or sizes on one or both sides are accommodated within the scope of the invention.
A lattice panel structure according to the invention has been described with reference to specific embodiments and examples. Various details of the invention may be changed without departing from the scope of the invention. Furthermore, the foregoing description of the preferred embodiments of the invention and best mode for practicing the invention are provided for the purpose of illustration only and not for the purpose of limitation, the invention being defined by the claims.

Claims

We claim:
1. A three dimensional lattice panel structure, having a multitude of mutually offset holes formed in a respective spaced-apart top and bottom of the panel and intersecting to form voids with interspersed support posts interconnecting the top and bottom of the panel in areas not encompassed by the mutually offset holes.
2. A three dimensional lattice panel structure according to claim 1, wherein the mutually offset holes are selected from the group consisting of circular, rectangular and hexagonal holes.
A three dimensional lattice panel structure according to claim 1, wherein the mutually holes are the same shape and size.
4. A three dimensional lattice panel structure according to claim 1, wherein the lattice panel is integrally formed.
5. A tray table for a passenger seat, comprising:
(a) a three dimensional lattice panel structure having a multitude of mutually offset holes formed in a respective spaced-apart top and bottom of the panel and intersecting to form voids with interspersed support posts interconnecting the top and bottom of the panel in areas not encompassed by the mutually offset holes;
(b) an imperforate cover positioned over the top of the panel to provide a support surface for an occupant seated aft of the tray table; and
(c) a pair of arms attached to the panel structure for mounting the panel structure to a seat positioned forward of the aft-seated occupant.
6. A tray table according to claim 5, wherein the mutually offset holes are selected from the group consisting of circular, rectangular and hexagonal holes.
7. A tray table according to claim 5, wherein the mutually offset holes are the same shape and size.
8. A tray table according to claim 5, wherein the lattice panel is integrally formed.
9. A tray table according to claim 5, and including an imperforate cover enclosing bottom of the panel.
10. A tray table according to claim 5, wherein:
(a) mutually offset holes formed in the top of the panel are circular;
(b) the mutually offset holes formed in the bottom of the panel are circular;
(c) the mutually offset holes formed in the top of the panel and the mutually offset holes formed in the bottom of the panel intersect to form voids with interspersed support posts interconnecting the top and bottom of the panel in areas not encompassed by the mutually offset holes; and
(d) the support posts define in cross-section arcuate wall segments corresponding to the shape and position of arcuate portions of the holes formed in the top of the panel and the holes formed in the bottom of the panel.
11. A tray table according to claim 10, wherein the posts are spaced-apart around the peripheiy of the holes formed in the top of the panel and the holes formed in the bottom of the panel.
12. A tray table according to claim 11, wherein the holes formed in the top of the panel and the holes formed in the bottom of the panel define respective intermediate top and bottom panel portions that isolate the holes formed in the top of the panel from each other, isolate the holes formed in the bottom of the panel from each other, and further
Figure imgf000014_0001
the posts define intermediate voids by which the holes formed in the top of the panel and the holes formed in the bottom of the panel communicate with each other.
13. A tray table for a passenger seat, comprising:
(a) a three dimensional, integrally-formed lattice panel structure having a multitude of mutually offset circular holes of the same shape and size formed in a respective top and bottom of the panel and intersecting to form voids with interspersed support posts interconnecting the top and bottom of the panel in areas not encompassed by the mutually offset holes, wherein:
(i) the mutually offset holes formed in the top of the panel are circular;
(ii) the mutually offset holes formed in the bottom of the panel are circular;
(iii) the mutually offset holes formed in the top of the panel and the mutually offset holes formed in the bottom of the panel intersect to form voids with interspersed support posts interconnecting the top and bottom of the panel in areas not encompassed by the mutually offset holes; (iv) the support posts define in cross-section arcuate wall segments corresponding to the shape and position of arcuate portions of the holes formed in the top of the panel and the holes formed in the bottom of the panel;
(b) an imperforate cover positioned over the top of the panel to provide a support surface for an occupant seated aft of the tray table;
(c) an imperforate cover enclosing the bottom of the panel; and
(d) a pair of arms attached to the panel structure for mounting the panel structure to a seat positioned forward of the aft-seated occupant.
14. A tray table according to claim 13, wherein the posts are spaced-apart around the periphery of the holes formed in the top of the panel and the holes formed in the bottom of the panel.
15. A tray table according to claim 13, wherein the holes formed in the top of the panel and the holes formed in the bottom of the panel define respective intermediate top and bottom panel portions that isolate the holes formed in the top of the panel from each other, isolate the holes formed in the bottom of the panel from each other, and further wherein the posts define intermediate voids by which the holes formed in the top of the panel and the holes formed in the bottom of the panel communicate with each other.
16. A method of forming a panel structure, comprising the steps of:
(a) forming a multitude of holes in a top of the panel structure;
(b) forming a multitude of holes in a bottom of the panel structure, wherein the holes in the bottom of the panel structure and the holes in the top of the panel structure are mutually and concentrically-offset intersect to form voids with interspersed support posts interconnecting the top and bottom of the panel in areas not encompassed by the mutually offset holes.
17. A method according to claim 16, wherein the step of forming the holes in the top and bottom comprises the step of forming holes selected from the group consisting of circular, rectangular and hexagonal holes.
18. A method according to claim 16, wherein the step of forming the holes in the top and bottom comprises the step of forming holes that are the same shape and size.
19. A method according to claim 16, wherein the step of forming the lattice panel includes the step of integrally forming the lattice panel.
20. A method according to claim 16, wherein the lattice panel comprises component of a tray table assembly adapted for use in an aircraft passenger cabin.
PCT/US2015/021218 2014-03-19 2015-03-18 Lattice panel structure and method Ceased WO2015143021A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201580013940.7A CN106103278B (en) 2014-03-19 2015-03-18 Grid panel construction and method
CA2941749A CA2941749C (en) 2014-03-19 2015-03-18 Lattice panel structure and method
JP2016556322A JP6343024B2 (en) 2014-03-19 2015-03-18 Lattice panel structure and method
EP15766032.5A EP3119675B1 (en) 2014-03-19 2015-03-18 Lattice panel structure and method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201461955405P 2014-03-19 2014-03-19
US61/955,405 2014-03-19

Publications (1)

Publication Number Publication Date
WO2015143021A1 true WO2015143021A1 (en) 2015-09-24

Family

ID=54145266

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2015/021218 Ceased WO2015143021A1 (en) 2014-03-19 2015-03-18 Lattice panel structure and method

Country Status (5)

Country Link
EP (1) EP3119675B1 (en)
JP (1) JP6343024B2 (en)
CN (1) CN106103278B (en)
CA (1) CA2941749C (en)
WO (1) WO2015143021A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3216649A1 (en) * 2016-03-08 2017-09-13 Bentley Motors Limited A method of manufacturing a table
WO2020204889A1 (en) * 2019-03-29 2020-10-08 Safran Seats Usa Llc Additive manufactured aircraft seat components
WO2021175921A1 (en) * 2020-03-05 2021-09-10 Zim Flugsitz Gmbh Table panel for an aircraft passenger seat

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6736569B2 (en) * 2000-01-17 2004-05-18 Alan Sian Ghee Lee Structural modular interconnectable subsoil drainage cell
US20130169009A1 (en) * 2010-06-18 2013-07-04 Be Aerospace, Inc. Aircraft seat with fabric seat back tray

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE65815T1 (en) * 1986-04-09 1991-08-15 Humberto Urriola CELLULAR STRUCTURE.
US4923544A (en) * 1988-11-02 1990-05-08 Tetrahex, Inc. Method of manufacturing a tetrahexaconal truss structure
JPH10138920A (en) * 1996-11-12 1998-05-26 Daishin Kasei Kk Table structure for vehicle
WO1999004381A1 (en) * 1997-07-14 1999-01-28 Samantha Bhalla Advertising panel
US5893331A (en) * 1998-02-10 1999-04-13 Diletto; Mario Beach and outdoor tray attachment for lounge chairs and the like
DE19820732C1 (en) * 1998-05-12 1999-09-02 Arslan Meal tray for back of airliner seat
DE102004062264A1 (en) * 2004-12-23 2006-07-06 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Building element, in particular wall cladding, and method for its production
SE533787C2 (en) * 2009-05-26 2011-01-11 Ecopals Ab Construction element according to the sandwich principle
CN102259703A (en) * 2011-05-23 2011-11-30 闵育秀 Physical constant-temperature aircraft seat and manufacturing method thereof
CN202850001U (en) * 2012-05-11 2013-04-03 陈希亮 A water drainage and storage plate

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6736569B2 (en) * 2000-01-17 2004-05-18 Alan Sian Ghee Lee Structural modular interconnectable subsoil drainage cell
US20130169009A1 (en) * 2010-06-18 2013-07-04 Be Aerospace, Inc. Aircraft seat with fabric seat back tray

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3216649A1 (en) * 2016-03-08 2017-09-13 Bentley Motors Limited A method of manufacturing a table
GB2548114A (en) * 2016-03-08 2017-09-13 Bentley Motors Ltd A method of manufacturing a table
WO2020204889A1 (en) * 2019-03-29 2020-10-08 Safran Seats Usa Llc Additive manufactured aircraft seat components
US11745878B2 (en) 2019-03-29 2023-09-05 Safran Seats Usa Llc Additive manufactured aircraft seat components
WO2021175921A1 (en) * 2020-03-05 2021-09-10 Zim Flugsitz Gmbh Table panel for an aircraft passenger seat
US12071243B2 (en) 2020-03-05 2024-08-27 Zim Aircraft Seating Gmbh Table panel for an aircraft passenger seat

Also Published As

Publication number Publication date
JP6343024B2 (en) 2018-06-13
JP2017509526A (en) 2017-04-06
CA2941749A1 (en) 2015-09-24
CA2941749C (en) 2018-04-24
EP3119675A1 (en) 2017-01-25
EP3119675B1 (en) 2020-03-04
CN106103278B (en) 2019-01-01
CN106103278A (en) 2016-11-09
EP3119675A4 (en) 2017-11-22

Similar Documents

Publication Publication Date Title
DE102016210861B4 (en) Method for forming a three-dimensional (3D) printed flexible support device
CN102857854B (en) The cladding element with continuous pass manufactured by injection molding
US9427898B2 (en) Apparatus for molding polymers and composite laminates
US9493241B2 (en) Lattice panel structure and method
US11255392B2 (en) Torque bar and methods for making
EP3119675B1 (en) Lattice panel structure and method
EP2511021B1 (en) Method of manufacturing truss structure and method of manufacturing a truss core sandwich panel
JP2011516926A5 (en)
JP2017053003A (en) Method for manufacturing metal member
JP2009536582A (en) Precisely folded structural and exterior components and sheets therefor
JP6177840B2 (en) Stacked composite interior parts
WO2020064717A2 (en) Structural element for a free-form surfaces
DE102014005190B4 (en) Interior trim part with a flat heating element and method for its production
US8695393B2 (en) Motor vehicle pedals and manufacturing methods thereof
CA2986070A1 (en) Improved method for producing a sandwich metal part having a non-developable shape
JP2017207035A (en) Lattice structure
US8412367B2 (en) Forming vehicle body models and other objects
US20130127224A1 (en) Assembly chair assembled by plastic board
JP6650623B2 (en) Processing method of bathroom parts
KR102825737B1 (en) Pattern for making blade-shaped molds
CN203306106U (en) Inner engine cover plate and corresponding engine cover
KR200464012Y1 (en) Press die sets for cutting various size panel
JP3189496U (en) Corner chamfer for formwork
US8973249B2 (en) Test fixtures for automotive parts and methods of fabricating the same
JP2017144567A (en) Thermoplastic resin molded body

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15766032

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2941749

Country of ref document: CA

REEP Request for entry into the european phase

Ref document number: 2015766032

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2015766032

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2016556322

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE