EP0039078A2 - Echelle double - Google Patents

Echelle double Download PDF

Info

Publication number
EP0039078A2
EP0039078A2 EP81103153A EP81103153A EP0039078A2 EP 0039078 A2 EP0039078 A2 EP 0039078A2 EP 81103153 A EP81103153 A EP 81103153A EP 81103153 A EP81103153 A EP 81103153A EP 0039078 A2 EP0039078 A2 EP 0039078A2
Authority
EP
European Patent Office
Prior art keywords
ladder
pin
struts
axis
articulated
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.)
Granted
Application number
EP81103153A
Other languages
German (de)
English (en)
Other versions
EP0039078A3 (en
EP0039078B1 (fr
Inventor
Adam Klenk
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT81103153T priority Critical patent/ATE10529T1/de
Publication of EP0039078A2 publication Critical patent/EP0039078A2/fr
Publication of EP0039078A3 publication Critical patent/EP0039078A3/de
Application granted granted Critical
Publication of EP0039078B1 publication Critical patent/EP0039078B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/14—Ladders capable of standing by themselves
    • E06C1/16—Ladders capable of standing by themselves with hinged struts which rest on the ground
    • E06C1/20—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as poles
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/42—Ladder feet; Supports therefor
    • E06C7/423—Ladder stabilising struts

Definitions

  • the invention relates to a step ladder, consisting of a ladder part with rungs with two lateral ladder stiles, from a support part with two lateral stanchions, the upper ends of which are articulated to the upper ends of the ladder stiles by parallel axis of the stile axes, consisting of four links, the outer ends of which Axle bars parallel to the rungs are articulated to each of the four spars and the inner ends of which are connected to each other by limiting the opening angle between the ladder part and the support part with bar axles parallel to the bars, consisting of two ladder supports that can be swung out to the side and one to the bar axis in the area of the upper bar ends Right-angled swivel axis are articulated, and two spreader struts for the automatic swiveling and swiveling of the two ladder supports when opening or closing the stepladder, respectively with strut axes parallel to the pivot axis are connected at their inner ends to the handlebar axles and at their
  • one or both ladder supports When moving more or less at right angles to the spar axes, one or both ladder supports can be retained on the floor, the restraining force leading to a bending stress on the expansion struts, which is high due to the comparatively large length of the expansion strut and the flat, upright strut profile only one opposed to low resistance. Therefore, sooner or later, it is likely that the ladder supports will automatically swing out and in, if not stable and thick expansion struts are used, which hinder a compact folding of the ladder and make the ladder even more unwieldy.
  • the invention has for its object to improve the stepladder of the type mentioned with automatically pivotable ladder supports so that it becomes easier and more manageable, can be completely folded up into mutual abutment of the ladder stiles and the support stiles and is also insensitive to forces from the ladder supports are transferred to the struts.
  • handlebars are articulated on the outside of the spars, extend at right angles to the articulation axes and are connected in pairs to one another with a handlebar axis and that one of the two spreader struts is connected with its inner end to each of the two handlebar axes.
  • a design has also proven to be particularly expedient in which the expansion struts and the supports are removably attached to the handlebar axles or the spars.
  • Such a version not only enables one or both ladder supports to be removed and thus adapted to possible spatial conditions, it also represents an embodiment which enables existing ladders to be retrofitted with ladder supports which can be pivoted automatically.
  • the spar axes 10 are provided in a known manner, not shown, with a stop which limits the mutual pivotability of the ladder part 1 and the support part 2 to one another to the opening angle ⁇ .
  • the ladder supports 3 and 4 are in this opening position at the angle P relative to the spar pairs 5 and 8 or 6 and 7 swung out, the angle ⁇ being approximately half as large as «.
  • each ladder support 3 or 4 consists of a support part 48 with a hollow profile, which is articulated at its upper end to the pivot axis 20 and has a transverse bore 44 at its lower end, and from a hollow foot part 45, which is the lower End of the support member 43 receives and has a series of transverse holes 46 arranged at regular intervals.
  • the foot part 45 is connected to the supporting part 1 43 in that a locking bolt 47 with a wooden head 48 extends through one of the transverse bores 46 and through the transverse bore 44 of the supporting part 43.
  • the locking bolt 47 is secured in its locking position by a spring clip 49, which is designed like the spring clip 24 and 35 and extends with a straight leg through a radial bore 50 of the locking bolt 47.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
  • Programmable Controllers (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP81103153A 1980-04-26 1981-04-27 Echelle double Expired EP0039078B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81103153T ATE10529T1 (de) 1980-04-26 1981-04-27 Stehleiter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3016264A DE3016264C2 (de) 1980-04-26 1980-04-26 Stehleiter
DE3016264 1980-04-26

Publications (3)

Publication Number Publication Date
EP0039078A2 true EP0039078A2 (fr) 1981-11-04
EP0039078A3 EP0039078A3 (en) 1981-12-23
EP0039078B1 EP0039078B1 (fr) 1984-11-28

Family

ID=6101116

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81103153A Expired EP0039078B1 (fr) 1980-04-26 1981-04-27 Echelle double

Country Status (3)

Country Link
EP (1) EP0039078B1 (fr)
AT (1) ATE10529T1 (fr)
DE (2) DE3016264C2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0108155A1 (fr) * 1982-11-02 1984-05-16 Helm, geb. Neundörfer, Cäcilia Echelle pliante
GB2207176A (en) * 1987-07-15 1989-01-25 Trevor Perry Support apparatus
US5443136A (en) * 1994-06-24 1995-08-22 Edward J. Ott, III Safety stepladder
AU736211B2 (en) * 1998-03-13 2001-07-26 Plank Magic Pty Ltd Stabilising and handrail assemblies for trestles
US7255198B1 (en) 2004-10-25 2007-08-14 Jennhwa Alan Lo Tripod extension stepladder
CN109611017A (zh) * 2018-12-18 2019-04-12 赛喜英 一种安全可靠型园林梯

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3621407A1 (de) * 1986-06-26 1988-01-14 Struewer Metallfab Heinrich Stehleiter

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1135336A (en) * 1914-06-06 1915-04-13 Fred E Van Houten Step-ladder.
US1415791A (en) * 1921-03-05 1922-05-09 Caronia Frank Joseph Stepladder
US1496201A (en) * 1922-01-11 1924-06-03 Russell O Webster Self-supporting extension ladder
US1610596A (en) * 1925-04-28 1926-12-14 Fred J Bird Extensible side brace for stepladders
US1683422A (en) * 1927-04-11 1928-09-04 James W Stevenson Ladder
US1924213A (en) * 1929-10-17 1933-08-29 William P Newman Stepladder
US2997127A (en) * 1959-10-07 1961-08-22 Wojtowicz Michael Stepladder with improved stabilizing legs
US3786900A (en) * 1972-02-25 1974-01-22 P Olsen Laterally stabilized stepladder
AU493550B1 (en) * 1974-10-23 1977-03-31 Henry Halkerston Improved ladder f

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0108155A1 (fr) * 1982-11-02 1984-05-16 Helm, geb. Neundörfer, Cäcilia Echelle pliante
GB2207176A (en) * 1987-07-15 1989-01-25 Trevor Perry Support apparatus
US5443136A (en) * 1994-06-24 1995-08-22 Edward J. Ott, III Safety stepladder
AU736211B2 (en) * 1998-03-13 2001-07-26 Plank Magic Pty Ltd Stabilising and handrail assemblies for trestles
US7255198B1 (en) 2004-10-25 2007-08-14 Jennhwa Alan Lo Tripod extension stepladder
CN109611017A (zh) * 2018-12-18 2019-04-12 赛喜英 一种安全可靠型园林梯
CN109611017B (zh) * 2018-12-18 2020-05-05 南京旭羽睿材料科技有限公司 一种安全可靠型园林梯

Also Published As

Publication number Publication date
DE3167399D1 (en) 1985-01-10
EP0039078A3 (en) 1981-12-23
EP0039078B1 (fr) 1984-11-28
DE3016264A1 (de) 1981-11-05
ATE10529T1 (de) 1984-12-15
DE3016264C2 (de) 1982-10-14

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