Patent US4891085A successfully refreshed from Google Patents.
US4891085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making an automobile roof cap
Assignee: Roto Plastics Inc
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Filing: 1988-11-04
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Granted: 1990-01-02
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Expires: 2008-11-04
Abstract
Abstract A method of manufacturing a decorative automobile roof cap by forming a flat composite of a thermoplastic cover member laminated to a core layer foam sheet, thermoforming the composite to the desired shape and forming the edges of the roof cap by removing a portion of the core layer from the cover member and then wrapping the excess cover member around the edges of the core layer and securing it to the underside of the core layer to form an edge covered with the cover member.
Inventors
- 👤 David C. Mulligan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:00
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/18; B32B38/00; B32B38/10; B32B38/105; B32B5/22; B32B5/32; B32B7/00; B32B7/02; B60; B60R; B60R13/00; B32B2305/00; B32B2305/02; B32B2305/022; B32B2605/00; B32B2605/003; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1034; Y10T156/1043; Y10T156/1044; Y10T156/1048; Y10T156/1052; Y10T156/108; Y10T156/1082; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/24992; Y10T428/249921; Y10T428/249953; Y10T428/249981
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
202 words
A method of manufacturing at least a portion of a cap for the roof of an automotive vehicle, said cap having a predetermined shape with at least one edge and being fastenable to a vehicle roof of complementary shape, comprising the steps of: a. laminating a flexible thermoplastic sheet cover member onto a core layer wherein said core layer is a sheet of thermoplastic foam having an upper layer and a lower layer of differing densities, said lower layer being of higher density than said upper layer and said cover member is laminated to said upper layer to form a composite; b. thermoforming said composite into said predetermined shape including pinching said foam together compressing said foam against said cover member along said edge leaving a portion of said composite adjacent said edge and heating said foam along said edge to fuse said compressed foam to said cover member; c. trimming a portion of said core layer adjacent said edge leaving behind a flap portion of said cover member along said edge; d. wrapping said flap portion around said edge so as to enclose said edge; and e. securing said flap portion to said core layer so as to finish said edge.
Claim 2
Independent Claim
202 words
A method of manufacturing at least a portion of a cap for the roof of an automotive vehicle, said cap having a predetermined shape with at least one edge and being fastenable to a vehicle roof of complementary shape, comprising the steps of: a. laminating a flexible thermoplastic sheet cover member onto a core layer wherein said core layer is a sheet of thermoplastic foam having an upper layer and a lower layer of differing densities, said lower layer being of higher density than said upper layer and said cover member is laminated to said upper layer to form a composite; b. thermoforming said composite into said predetermined shape including pinching said foam together compressing said foam against said cover member along said edge leaving a portion of said composite adjacent said edge and heating said foam along said edge to fuse said compressed foam to said cover member; c. trimming a portion of said core layer adjacent said edge leaving behind a flap portion of said cover member along said edge; d. wrapping said flap portion around said edge so as to enclose said edge; and e. securing said flap portion to said core layer so as to finish said edge.
Claim 3
Dependent Claim
25 words
The method according to claim 1 wherein said step of trimming comprises removing said foam from said portion adjacent said edge to form said flap.
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) | 1993-01-01 | 1993-07-03 | 1994-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-01 | 1997-07-03 | 1998-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-01 | 2001-07-03 | 2002-01-02 | $7700.00 | Window Closed / Lapsed |