EP4375032A1 - Ein werkzeug zur verarbeitung von gehärtetem polyurethanschaum - Google Patents

Ein werkzeug zur verarbeitung von gehärtetem polyurethanschaum Download PDF

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Publication number
EP4375032A1
EP4375032A1 EP23211617.8A EP23211617A EP4375032A1 EP 4375032 A1 EP4375032 A1 EP 4375032A1 EP 23211617 A EP23211617 A EP 23211617A EP 4375032 A1 EP4375032 A1 EP 4375032A1
Authority
EP
European Patent Office
Prior art keywords
tool
blade
polyurethane foam
hardened polyurethane
processing
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.)
Pending
Application number
EP23211617.8A
Other languages
English (en)
French (fr)
Inventor
Dominik Kucharczyk
Michal Przedwojewski
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.)
Selena Industrial Technologies Sp zoo
Original Assignee
Selena Industrial Technologies Sp zoo
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 Selena Industrial Technologies Sp zoo filed Critical Selena Industrial Technologies Sp zoo
Publication of EP4375032A1 publication Critical patent/EP4375032A1/de
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B3/00—Hand knives with fixed blades
    • B26B3/08—Hand knives with fixed blades specially adapted for cutting cardboard, or wall, floor, or like covering materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B9/00—Blades for hand knives
    • B26B9/02—Blades for hand knives characterised by the shape of the cutting edge, e.g. wavy
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • E04F21/165—Implements for finishing work on buildings for finishing joints, e.g. implements for raking or filling joints, jointers
    • E04F21/1652—Implements for finishing work on buildings for finishing joints, e.g. implements for raking or filling joints, jointers for smoothing and shaping joint compound to a desired contour

Definitions

  • the utility model relates to a tool for processing hardened polyurethane foam, used in particular for installing window and door joinery and insulation works.
  • Polyurethane foams are commonly used in construction and finishing works, in particular for installing window and door joinery, as well as insulating roofs and buildings. They are characterised by the so-called post-expansion, that is a 30-100% increase in volume after application in the target place, which ultimately creates a non-uniform surface that requires levelling.
  • a utility model is known from Chinese Patent Description CN201776764U , comprising a special knife set for cutting foam plastic, which includes at least five knives used in combination, wherein each knife is provided with a blade and a handle.
  • the special knife set is comprised of at least a general-purpose knife for trimming, a serrated drilling knife, a special knife for emptying cavities, a special knife for chamfering, and a special bevel knife for shaving.
  • this set is not suitable for levelling the surface of insulating materials, especially hardened polyurethane foam covered with a layer of liquid foil.
  • the blade is preferred for the blade to be made of steel which is climb milled and vacuum-hardened.
  • the handle of the tool is shaped to resemble the grip of a hand, which in turn protects the hand from slipping onto the cutting portion and makes the tool safe for the user.
  • fig. 1 shows a side view of the tool
  • fig. 2 shows a view of the tool from the side of the cutting portion
  • fig. 3 shows the state of the art in a form of commonly known and used tools.
  • the tool for processing hardened polyurethane foam is constructed from a profiled handle 1 made of plastic and a blade 2 made of steel which is climb milled and vacuum-hardened, which prevents permanent deformation of the blade during use.
  • the cutting edge of the blade 2 is provided with a smooth cutting portion 3 which has a thickness and height decreasing with length providing high flexibility.
  • the cutting edge of the blade 2 ends with an acute angle 4 of 72 degrees which allows reaching hard-to-reach places.
  • the spine of the blade 2 ends with an obtuse angle 5 which provides safety for the user.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Knives (AREA)
EP23211617.8A 2022-11-22 2023-11-22 Ein werkzeug zur verarbeitung von gehärtetem polyurethanschaum Pending EP4375032A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL131096U PL73319Y1 (pl) 2022-11-22 2022-11-22 Narzędzie do obróbki utwardzonej piany poliuretanowej

Publications (1)

Publication Number Publication Date
EP4375032A1 true EP4375032A1 (de) 2024-05-29

Family

ID=85480570

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23211617.8A Pending EP4375032A1 (de) 2022-11-22 2023-11-22 Ein werkzeug zur verarbeitung von gehärtetem polyurethanschaum

Country Status (2)

Country Link
EP (1) EP4375032A1 (de)
PL (1) PL73319Y1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1820234A (en) * 1928-09-29 1931-08-25 Lees Nora Elsa Cutlery and the like
US2429405A (en) * 1939-08-15 1947-10-21 Clarence A Dringman Knife
US20080016704A1 (en) * 2006-07-18 2008-01-24 Hisatsugu Henry Haneda Cutting tools
CN201776764U (zh) 2010-06-23 2011-03-30 山东潍坊福田模具有限责任公司 泡塑切割专用刀具组
US20120124844A1 (en) * 2010-11-24 2012-05-24 Joachim Droese Chef's Knife

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1820234A (en) * 1928-09-29 1931-08-25 Lees Nora Elsa Cutlery and the like
US2429405A (en) * 1939-08-15 1947-10-21 Clarence A Dringman Knife
US20080016704A1 (en) * 2006-07-18 2008-01-24 Hisatsugu Henry Haneda Cutting tools
CN201776764U (zh) 2010-06-23 2011-03-30 山东潍坊福田模具有限责任公司 泡塑切割专用刀具组
US20120124844A1 (en) * 2010-11-24 2012-05-24 Joachim Droese Chef's Knife

Also Published As

Publication number Publication date
PL73319Y1 (pl) 2024-01-29
PL131096U1 (pl) 2023-03-13

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