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US4247350A Expired / Lapsed US ⏱️ 0.0 years remaining

Simulated leather accessory and method of making same

Assignee: ABZ Inc
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Filing: 1975-04-10
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Granted: 1981-01-27
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Expires: 1995-04-10
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Abstract

Abstract An article or accessory and the method of making the article or accessory from a thermoplastic material is disclosed. Preformed and cut components are formed into an assembly on a female die portion of a fixture having a recess defined therein in the outline configuration of the article. A mating male die has an edge aligning with the recess of the female die. The male die is brought into close proximity to the female die and thermal energy applied. The assembly is sealed along an edge substantially perpendicular to the plane of the assembly leaving only a thin tear edge which can be severed. The resulting edge seal closely approximates turned edge leather construction in appearance.

Inventors

  • 👤 Donald E. McIntyre
  • 👤 David J. Veros
  • 👤 Duane W. Veros

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 07:11
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/74; B29C65/743; B29C65/7441; A; A45; A45C; A45C1/00; A45C1/06; B29C65/02; B29C65/04; B29C66/00; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B29C65/18; B29C66/70; B29C66/71; B29L; B29L2031/00; B29L2031/742; Y; Y10; Y10S; Y10S428/00; Y10S428/904; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1034; Y10T156/1051; Y10T156/1052; Y10T156/1054

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 235 words
A method of producing an edge on a thermoplastic item having the appearance of turned-edge leather construction comprising: (a) forming a blank of thermoplastic material having a body portion and a projecting flap, said flap being joined to said body portion along a score line; (b) positioning said blank in a fixture, said fixture having, (i) a first die member having a recess of predetermined depth defining the shape of the item to be produced; (ii) a second die member having a projecting edge in alignment with said recess; and (iii) aligning and retaining means associated with said fixture; (c) folding said flap along said score line to overlie the body portion of said blank forming an assembly with said assembly engaged by said aligning and retaining means; and (d) bringing said die members together with said projecting edge and contacting said flap and applying pressure and thermal energy to said blank in the projected flap area along a line substantially parallel to said score line and along a plane substantially perpendicular to said blank thereby fusing said blank flap and body and causing said assembly to at least partially compress into said recess in said first die member fusing the layers along a generally perpendicular edge thereby forming a thin separable tear seal intermediate of the upper and lower faces of said assembly leaving a turned edge having a surface devoid of fusion lines.
Claim 2
Independent Claim 235 words
A method of producing an edge on a thermoplastic item having the appearance of turned-edge leather construction comprising: (a) forming a blank of thermoplastic material having a body portion and a projecting flap, said flap being joined to said body portion along a score line; (b) positioning said blank in a fixture, said fixture having, (i) a first die member having a recess of predetermined depth defining the shape of the item to be produced; (ii) a second die member having a projecting edge in alignment with said recess; and (iii) aligning and retaining means associated with said fixture; (c) folding said flap along said score line to overlie the body portion of said blank forming an assembly with said assembly engaged by said aligning and retaining means; and (d) bringing said die members together with said projecting edge and contacting said flap and applying pressure and thermal energy to said blank in the projected flap area along a line substantially parallel to said score line and along a plane substantially perpendicular to said blank thereby fusing said blank flap and body and causing said assembly to at least partially compress into said recess in said first die member fusing the layers along a generally perpendicular edge thereby forming a thin separable tear seal intermediate of the upper and lower faces of said assembly leaving a turned edge having a surface devoid of fusion lines.
Claim 3
Dependent Claim 28 words
The method of claim 1 wherein the projecting die edge of said first die member is formed with a leading edge a trailing edge and a convexity therebetween.
Claim 4
Dependent Claim 14 words
The method of claim 1 wherein said thermal energy is applied by dielectrical means.
Claim 5
Dependent Claim 23 words
The method of claim 1 further including the step of severing the assembly along said tear seal and placing appropriate decorative stitching thereon.
Claim 6
Dependent Claim 25 words
The method of claim 1 further including the step of inserting a preformed assembly having a thermoplastic edge portion intermediate said flap and body portion.

References Cited (Backward Citations)

US1572831A Cited
US2117452A Cited
US2425388A Cited
US3147903A Cited
US3347733A Cited
US3368600A Cited
US3696771A Cited
US3790420A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-01-27 1984-07-28 1985-01-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-01-27 1988-07-28 1989-01-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-01-27 1992-07-28 1993-01-27 $7700.00 Window Closed / Lapsed

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