Patent US3143323A successfully refreshed from Google Patents.
US3143323A
Expired / Lapsed
US
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Aerial device with retarding rotor
Assignee: Kaman Aircraft Corp
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Filing: 1962-09-21
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Granted: 1964-08-04
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Expires: 1982-09-21
Abstract
No abstract record available.
Inventors
- 👤 Richard H Hollrock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:40
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/02; B64D; B64D19/00; B64D19/02; F; F42; F42B; F42B10/00; F42B10/32; F42B10/48; F42B10/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
IN AN AERIAL DEVICE FOR RETARDING THE DESCENT OF A BODY, THE COMBINATION COMPRISING A NORMALLY VERTICAL PINTLE CONNECTIBLE WITH SAID BODY AND HAVING A CENTRAL AXIS, A HUB CONNECTED WITH SAID PINTLE FOR ROTATION ABOUT COAXIAL WITH SAID CENTRAL AXIS, A PLURALITY OF GENERALLY RADIAL BLADES CONNECTED AT THEIR INBOARD ENDS WITH SAID HUB FOR PIVOTAL MOVEMENTS ABOUT FLAPPING AXES ARRANGED GENERALLY TRANSVERSE OF SAID CENTRAL AXIS, A CONING SYNCHRONIZER BUSHING CARRIED BY SAID CENTRAL STEM AND VERTICALLY SLIDABLE RELATIVE THERETO, A PLURALITY OF SYNCHRONIZER LINKS, FIRST MEANS CONNECTING ONE END OF EACH OF SAID SYNCHRONIZER LINKS TO SAID SYNCHRONIZER BUSHING SO AS TO MOVE VERTICALLY WITH SAID BUSHING, AND SECOND MEANS PIVOTALLY CONNECTING THE OTHER END OF EACH OF SAID SYNCHRONIZER LINKS TO A RESPECTIVE ONE OF SAID BLADES, SAID FIRST MEANS COMPRISING A PLURALITY OF LINKS EACH PIVOTALLY CONNECTED AT ONE END TO AN ASSOCIATED SYNCHRONIZER LINK AND AT THE OTHER END CONNECTED TO SAID SYCHRONIZER BUSHING FOR
Claim 2
Dependent Claim
161 words
IN AN AERIAL DEVICE FOR RETARDING THE DESCENT OF A BODY, THE COMBINATION COMPRISING A NORMALLY VERTICAL PINTLE CONNECTIBLE WITH SAID BODY AND HAVING A CENTRAL AXIS, A HUB CONNECTED WITH SAID PINTLE FOR ROTATION ABOUT COAXIAL WITH SAID CENTRAL AXIS, A PLURALITY OF GENERALLY RADIAL BLADES CONNECTED AT THEIR INBOARD ENDS WITH SAID HUB FOR PIVOTAL MOVEMENTS ABOUT FLAPPING AXES ARRANGED GENERALLY TRANSVERSE OF SAID CENTRAL AXIS, A CONING SYNCHRONIZER BUSHING CARRIED BY SAID CENTRAL STEM AND VERTICALLY SLIDABLE RELATIVE THERETO, A PLURALITY OF SYNCHRONIZER LINKS, FIRST MEANS CONNECTING ONE END OF EACH OF SAID SYNCHRONIZER LINKS TO SAID SYNCHRONIZER BUSHING SO AS TO MOVE VERTICALLY WITH SAID BUSHING, AND SECOND MEANS PIVOTALLY CONNECTING THE OTHER END OF EACH OF SAID SYNCHRONIZER LINKS TO A RESPECTIVE ONE OF SAID BLADES, SAID FIRST MEANS COMPRISING A PLURALITY OF LINKS EACH PIVOTALLY CONNECTED AT ONE END TO AN ASSOCIATED SYNCHRONIZER LINK AND AT THE OTHER END CONNECTED TO SAID SYCHRONIZER BUSHING FOR
References Cited (Backward Citations)
US2440293A
Cited
FR1146834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |