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US4088525A
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US
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Method of making fiber glass parts with stud supports
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1976-08-12
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Granted: 1978-05-09
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Expires: 1996-08-12
Abstract
Abstract In the manufacture of a glass fiber reinforced plastic part a chopped glass fiber reinforced, thermosetting resin is placed in a mold cavity. A continuous filament glass fiber cylinder impregnated with the same resin used in the above formulation without chopped glass fiber 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 continuous filament glass fiber reinforcements in the stud support areas.
Inventors
- 👤 Michael Gowetski
- 👤 Robert W. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:41
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A method of forming and curing in a mold cavity, a glass fiber reinforced plastic part having stud supports molded into the part which comprises: (a) forming a continuous filament glass fiber cylinder impregnated with a heat curable resin, (b) forming said glass fiber cylinder to fit between a pin and a wall which form a recess which subsequently forms the stud supports, and inserting the cylinder into the recess, (c) placing in the mold cavity additional flowable heat curable said resin containing chopped glass fiber; and (d) applying heat and pressure to cause the chopped glass fiber and resin to flow and fill the mold including space surrounding said cylinder, and (e) curing said resin.
Claim 2
Independent Claim
116 words
A method of forming and curing in a mold cavity, a glass fiber reinforced plastic part having stud supports molded into the part which comprises: (a) forming a continuous filament glass fiber cylinder impregnated with a heat curable resin, (b) forming said glass fiber cylinder to fit between a pin and a wall which form a recess which subsequently forms the stud supports, and inserting the cylinder into the recess, (c) placing in the mold cavity additional flowable heat curable said resin containing chopped glass fiber; and (d) applying heat and pressure to cause the chopped glass fiber and resin to flow and fill the mold including space surrounding said cylinder, and (e) curing said resin.
References Cited (Backward Citations)
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Cited
US1640543A
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US1998964A
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US2710026A
Cited
US3044922A
Cited
US3594247A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-08 | 1981-11-07 | 1982-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-08 | 1985-11-07 | 1986-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-08 | 1989-11-07 | 1990-05-09 | $7700.00 | Window Closed / Lapsed |