Patent US3140638A successfully refreshed from Google Patents.
US3140638A
Expired / Lapsed
US
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Fairing
Assignee: Hawley Products Co
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Filing: 1962-07-27
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Granted: 1964-07-14
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Expires: 1982-07-27
Abstract
No abstract record available.
Inventors
- 👤 Luca Peter L De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:51
CPC Classifications
F; F41; F41F; F41F3/00; F41F3/04; F41F3/06; F41F3/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A FRANGIBLE FIRING COMPRISING A ONE-PIECE, MOLDED, HOLLOW SUBSTANTIALLY CONE-SHAPED SHELL OF FIBERS IMPREGNATED WITH A BRITTLE RESIN, A SMOOTH, OUTER SURFACE ON SAID SHELL HAVING AERODYNAMIC CHARACTERISTICS ENABLING IT TO WITHSTAND AIR PRESSURES TO WHICH IT IS SUBJECTED WHEN MOUNTED ON A FLYING AIRCRAFT, SAID SHELL HAVING THIN WALL SEGMENTS ALTERNATING BOTH LONGITUDINALLY AND CIRCUMFERENTIALLY WITH THICKER WALL SEGMENTS, SAID THICKER WALL SEGMENTS FORMING RAISED PORTIONS ON THE INNER SURFACE OF SAID SHELL, SAID THICKER WALL SEGMENTS HAVING A LOWER FIBER DENSITY THROUGHOUT THAN THE FIBER DENSITY OF SAID THINNER WALL SEGMENTS AND BEING IMPREGNATED WITH SAID BRITTLE RESIN AT A RELATIVE PROPORTION OF SAID RESIN TO SAID FIBER
Claim 2
Dependent Claim
110 words
A FRANGIBLE FIRING COMPRISING A ONE-PIECE, MOLDED, HOLLOW SUBSTANTIALLY CONE-SHAPED SHELL OF FIBERS IMPREGNATED WITH A BRITTLE RESIN, A SMOOTH, OUTER SURFACE ON SAID SHELL HAVING AERODYNAMIC CHARACTERISTICS ENABLING IT TO WITHSTAND AIR PRESSURES TO WHICH IT IS SUBJECTED WHEN MOUNTED ON A FLYING AIRCRAFT, SAID SHELL HAVING THIN WALL SEGMENTS ALTERNATING BOTH LONGITUDINALLY AND CIRCUMFERENTIALLY WITH THICKER WALL SEGMENTS, SAID THICKER WALL SEGMENTS FORMING RAISED PORTIONS ON THE INNER SURFACE OF SAID SHELL, SAID THICKER WALL SEGMENTS HAVING A LOWER FIBER DENSITY THROUGHOUT THAN THE FIBER DENSITY OF SAID THINNER WALL SEGMENTS AND BEING IMPREGNATED WITH SAID BRITTLE RESIN AT A RELATIVE PROPORTION OF SAID RESIN TO SAID FIBER
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) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |