Patent US4234633A successfully refreshed from Google Patents.
US4234633A
Expired / Lapsed
US
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Reinforced stud supports in fiberglass parts
Assignee: Cambridge Ind Co
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Filing: 1979-04-23
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Granted: 1980-11-18
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Expires: 1999-04-23
Abstract
Abstract In the manufacture of a fiberglass reinforced plastic part a chopped glass fiber reinforced, thermosetting resin is placed in a mold cavity. A continuous filament fiberglass cylinder impregnated with the same resin used in the above formulation without chopped fiberglass is placed in the stud support areas of the mold. The mold is then closed and the resin subjected to heat and pressure to cause it to completely fill the mold cavity and cure. The cured part has woven fiberglass reinforcements in the stud support areas.
Inventors
- 👤 Michael Gowetski
- 👤 Robert W. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:52
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1314; Y10T428/24; Y10T428/24479; Y10T428/24612; Y10T428/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
In a glass fiber filled plastic vehicle body part, made from sheet molding compound containing from 22% to 35% of glass fibers having a length of from 12 to 50 millimeters, having a plurality of stud supports, the improvement characterized by each of the plurality of stud supports containing: one non-woven continuous filament glass fiber cylinder embedded in each of the stud supports and completely surrounded by the sheet molding compound whereby each of the stud supports is reinforced to withstand the stress of the insertion of a self-threading stud.
Claim 2
Dependent Claim
90 words
In a glass fiber filled plastic vehicle body part, made from sheet molding compound containing from 22% to 35% of glass fibers having a length of from 12 to 50 millimeters, having a plurality of stud supports, the improvement characterized by each of the plurality of stud supports containing: one non-woven continuous filament glass fiber cylinder embedded in each of the stud supports and completely surrounded by the sheet molding compound whereby each of the stud supports is reinforced to withstand the stress of the insertion of a self-threading stud.
References Cited (Backward Citations)
US2710526A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-18 | 1984-05-19 | 1984-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-18 | 1988-05-19 | 1988-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-18 | 1992-05-19 | 1992-11-18 | $7700.00 | Window Closed / Lapsed |