Patent US4563381A successfully refreshed from Google Patents.
US4563381A
Expired / Lapsed
US
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Plastic hinge
Assignee: PETRO PLASTICS COMPANY Inc A CORP OF NEW JERSEY
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Filing: 1984-11-05
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Granted: 1986-01-07
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Expires: 2004-11-05
Abstract
Abstract An extruded thermoplastic hinge having drastically improved ability to withstand flexure cycles at room as well as at low temperatures is disclosed. The hinge comprises a flexible cross-section of polyester elastomer and a co-extruded section of rigid or semi-rigid thermoplastic material selected from the group comprising rigid polyvinyl (PVC), acrylonitrile-butadyene-styrene (ABS), impact modified or general purpose acrylic or high impact styrene. The flexure cross-section may have the thickness ranging from ten percent to 100% of the thickness of the semi-rigid cross-section.
Inventors
- 👤 Rommel J. Woodland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:03
CPC Classifications
E; E05; E05D; E05D1/00; E05D1/02; B; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/11; B29C48/12; B29C48/25; B29C48/30; B29C48/304; B29L; B29L2031/00; B29L2031/22; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/53; E05Y2900/538; Y; Y10; Y10S; Y10S16/00; Y10S16/13; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24942; Y10T428/2495; Y10T428/31504; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
68 words
A one-piece thermoplastic extrusion comprising a first portion of rigid thermoplastic material having a respective predetermined cross-sectional thickness along a defined linear region thereof, said rigid thermoplastic material being selected from the group consisting of rigid polyvinyl chloride (PVC), acrylonitrile-butadyene-styrene (ABS), impact modified or general purpose acrylic, and high impact styrene and a second portion of polyester elastomer joined to said first portion at said defined linear region.
Claim 2
Dependent Claim
68 words
A one-piece thermoplastic extrusion comprising a first portion of rigid thermoplastic material having a respective predetermined cross-sectional thickness along a defined linear region thereof, said rigid thermoplastic material being selected from the group consisting of rigid polyvinyl chloride (PVC), acrylonitrile-butadyene-styrene (ABS), impact modified or general purpose acrylic, and high impact styrene and a second portion of polyester elastomer joined to said first portion at said defined linear region.
Claim 3
Dependent Claim
54 words
A one-piece extrusion according to claim 1 wherein said first portion of rigid thermoplastic material includes a first and a second section and wherein said second portion has a cross-sectional thickness approximately equal to ten percent (10%) of said predetermined cross-sectional thickness of either said first or said second section of said first portion.
Claim 4
Dependent Claim
31 words
A one-piece thermoplastic extrusion according to claim 1 wherein the cross-sectional thickness of said second portion lies in the range from ten percent to 100 percent of said predetermined cross-sectional thickness.
Claim 5
Dependent Claim
20 words
A one-piece thermoplastic extrusion according claim 1 wherein said second portion is a blend of polyester elastomer and flexible polyvinylchloride.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-06 | 1989-07-08 | 1990-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-06 | 1993-07-08 | 1994-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-06 | 1997-07-08 | 1998-01-07 | $7700.00 | Window Closed / Lapsed |