US3669821A
Expired / Lapsed
US
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Fiber-reinforced plastic structural member
Assignee: Hospitality Homes
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Filing: 1968-08-02
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Granted: 1972-06-13
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Expires: 1988-08-02
Abstract
Abstract Fiber-reinforced plastic structural members are fabricated with at least one lengthwise cell. The members are made from two component elements, each having contigouos surfaces in the assembly which surfaces become coalesced in the integral structural member. One of the components is formed, partially gelled, and before complete gelation, is engaged with the other component which is at that time ungelled. With the two components thus assembled, the overall member is cured to produce a unitary structural member having at least one lengthwise cell. The process is especially useful in producing components for operating louvers.
Inventors
- 👤 Merle F Sharp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:07
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/70; B29C66/73; B29C66/737; B29C66/7375; B29C66/73753; B29C66/73754; B29C53/00; B29C53/22; B29C53/24; B29C65/00; B29C65/02; B29C65/14; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/13; B29C66/131; B29C66/50; B29C66/51; B29C66/54; B29C66/72; B29C66/721; B29C66/7214; B29C66/72143; B29C66/739; B29C66/7394; B29C66/73941; B29C66/80; B29C66/83; B29C66/832; B29C66/8324; B29D; B29D24/00; B29D24/002; B29D99/00; B29D99/0003; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B3/00; B32B3/26; B32B3/28; B29C2793/00; B29C2793/009; B29C65/1403; B29C65/1406; B29C66/71; B29C66/7212; B29K; B29K2105/00; B29K2105/06; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2305/00; B32B2305/08; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1025; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24669; Y10T428/24694; Y10T428/24711; Y10T428/24744; Y10T428/24777
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |