Patent US3304804A successfully refreshed from Google Patents.
US3304804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical actuators
Assignee: Plessey UK Ltd
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Filing: 1965-01-11
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Granted: 1967-02-21
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Expires: 1985-01-11
Abstract
Abstract 1,089,433. Toothed gearing. PLESSEYUK Ltd. Jan. 8, 1965 [Jan. 10, 1964], No. 1139/64. Heading F2Q. Epicyclic gearing for the operation of eyelid flaps in thrust reversers for aircraft propulsion jet engines comprises a driving planet-carrier 4, stepped planets 7, 8, 9 meshing respectively an annulus 12, coupled by a sleeve 19 to one eyelid flap, a fixed annulus 11, and an annulus 13 coupled by a sleeve 20 with the other eyelid flap. The planet-carrier 4 is driven through reduction gearing 3 by an air motor 2. The arrangement is such that the sleeves 19, 20 are driven at substantially the same speeds in opposite directions.
Inventors
- 👤 Thomas A Oldfield
- 👤 Leonard T Tribe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:27
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/53; F02; F02K; F02K1/00; F02K1/54; F02K1/76; F16H; F16H1/00; F16H1/28; F16H48/00; F16H48/06; F16H48/10; F16H2001/2881; F16H2048/104; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19074; Y10T74/19121
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A MECHANICAL ACTUATOR COMPRISING THREE COAXIAL GEARS; TWO OF WHICH ARE ROTATABLE AND THE THIRD OF WHICH IS FIXED AGAINST ROTATION, A PLANET GEAR CARRIER, MEANS FOR DRIVING SAID PLANET GEAR CARRIER ABOUT THE AXIS OF SAID GEARS, THREE PLANET GEARS MOUNTED ON SAID CARRIER, COOPERATING RESPECTIVELY WITH SAID THREE GEARS, AND INTERCONNECTED FOR SIMULTANEOUS ROTATION ABOUT A COMMON AXIS WHICH IS PARALLEL TO THE AXIS OF SAID GEARS, AND TWO COAXIAL DRIVEN ELEMENTS COUPLED RESPECTIVELY TO SAID TWO ROTATABLE GEARS, THE PLANET GEAR CO-OPERATING WITH THE FIXED GEAR HAVING A DIAMETER INTERMEDIATE THE DIAMETERS OF THE OTHER TWO PLANET GEARS AND DIFFERING RESPECTIVELY FROM SAID DIAMETERS BY APPROXIMATELY EQUAL AMOUNTS.
Claim 2
Dependent Claim
111 words
A MECHANICAL ACTUATOR COMPRISING THREE COAXIAL GEARS; TWO OF WHICH ARE ROTATABLE AND THE THIRD OF WHICH IS FIXED AGAINST ROTATION, A PLANET GEAR CARRIER, MEANS FOR DRIVING SAID PLANET GEAR CARRIER ABOUT THE AXIS OF SAID GEARS, THREE PLANET GEARS MOUNTED ON SAID CARRIER, COOPERATING RESPECTIVELY WITH SAID THREE GEARS, AND INTERCONNECTED FOR SIMULTANEOUS ROTATION ABOUT A COMMON AXIS WHICH IS PARALLEL TO THE AXIS OF SAID GEARS, AND TWO COAXIAL DRIVEN ELEMENTS COUPLED RESPECTIVELY TO SAID TWO ROTATABLE GEARS, THE PLANET GEAR CO-OPERATING WITH THE FIXED GEAR HAVING A DIAMETER INTERMEDIATE THE DIAMETERS OF THE OTHER TWO PLANET GEARS AND DIFFERING RESPECTIVELY FROM SAID DIAMETERS BY APPROXIMATELY EQUAL AMOUNTS.
References Cited (Backward Citations)
US2192881A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |