US3119581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Securing means for inflatable inlet device
Assignee: Dunlop Rubber Co Ltd
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Filing: 1961-06-07
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Granted: 1964-01-28
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Expires: 1981-06-07
Abstract
No abstract record available.
Inventors
- 👤 Trevaskis Henry William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:28
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/04; F02C7/042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
AN EXPANSIBLE INTAKE FOR A JET ENGINE WHICH COMPRISES AN INTAKE ELEMENT CURVED ABOUT AN AXIS AND HAVING A CONVEX OUTER PORTION AND A CONCAVE INNER PORTION AND HAVING A CIRCUMFERENTIAL GROOVE IN SAID OUTER PORTION RECESSED RADIALLY INWARDLY TOWARD SAID AXIS AND A CIRCUMFERENTIAL GROOVE IN SAID INNER PORTION RECESSED RADIALLY OUTWARDLY RELATIVE TO SAID AXIS OF SAID ELEMENT AND A PAIR OF SPACED CONNECTING GROOVES CONNECTING SAID CIRCUMFERENTIAL GROOVES TO ENCLOSE AN AREA OF SAID INNER AND OUTER SURFACES, A SHEET OF ELASTOMERIC MATERIAL CONFORMING TO THE INNER AND OUTER SURFACES OF SAID INTAKE ELEMENT WITHIN SAID AREA AND HAVING BEADS FITTING INTO SAID GROOVES, EACH SAID BEAD COMPRISING A REINFORCEMENT, MEANS FOR PLACING THE BEAD IN THE COAXIAL GROOVE IN SAID INNER SURFACE UNDER LINEAR COMPRESSION TO FORCE SAID BEAD INTO ITS SAID GROOVE, MEANS TO PLACE THE REINFORCEMENTS OF SAID OTHER GROOVES UNDER TENSION TO DRAW THEM INTO THEIR RESPECTIVE GROOVES AND MEANS TO INFLATE SAID SHEET WITHIN SAID AREA.
Claim 2
Dependent Claim
164 words
AN EXPANSIBLE INTAKE FOR A JET ENGINE WHICH COMPRISES AN INTAKE ELEMENT CURVED ABOUT AN AXIS AND HAVING A CONVEX OUTER PORTION AND A CONCAVE INNER PORTION AND HAVING A CIRCUMFERENTIAL GROOVE IN SAID OUTER PORTION RECESSED RADIALLY INWARDLY TOWARD SAID AXIS AND A CIRCUMFERENTIAL GROOVE IN SAID INNER PORTION RECESSED RADIALLY OUTWARDLY RELATIVE TO SAID AXIS OF SAID ELEMENT AND A PAIR OF SPACED CONNECTING GROOVES CONNECTING SAID CIRCUMFERENTIAL GROOVES TO ENCLOSE AN AREA OF SAID INNER AND OUTER SURFACES, A SHEET OF ELASTOMERIC MATERIAL CONFORMING TO THE INNER AND OUTER SURFACES OF SAID INTAKE ELEMENT WITHIN SAID AREA AND HAVING BEADS FITTING INTO SAID GROOVES, EACH SAID BEAD COMPRISING A REINFORCEMENT, MEANS FOR PLACING THE BEAD IN THE COAXIAL GROOVE IN SAID INNER SURFACE UNDER LINEAR COMPRESSION TO FORCE SAID BEAD INTO ITS SAID GROOVE, MEANS TO PLACE THE REINFORCEMENTS OF SAID OTHER GROOVES UNDER TENSION TO DRAW THEM INTO THEIR RESPECTIVE GROOVES AND MEANS TO INFLATE SAID SHEET WITHIN SAID AREA.
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) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |