US3307433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compound planetary speed reducer with adjustable gearing
Assignee: Curtiss Wright Corp
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Filing: 1963-12-02
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Granted: 1967-03-07
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Expires: 1983-12-02
Abstract
No abstract record available.
Inventors
- 👤 Raymur B Bennett
- 👤 Tofa W Khiralla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:12
CPC Classifications
F; F16; F16H; F16H1/00; F16H1/28; F16H1/46; F16H2001/2881; F16H2001/289; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19628; Y10T74/19633
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
212 words
AN EPICYCLIC GEAR TRAIN COMPRISING A PAIR OF FIXED INTERNALLY TOOTHED RING GEARS SPACED APART ON A COMMON AXIS, ONE OF THE SAID GEARS HAVING HELICAL TEETH OF ONE HAND AND THE OTHER GEAR HAVING HELICAL TEETH OF THE OPPOSITE HAND; A PLURALITY OF AXIALLY MOVABLE COMPOUND PLANETARY MEMBERS EACH OF WHICH INCLUDES ONE PORTION HAVING HELICAL GEAR TEETH IN MESH WITH THE GEAR TEETH OF ONE OF THE FIXED RING GEARS, AND ANOTHER PORTION HAVING HELICAL GEAR TEETH IN MESH WITH THE GEAR TEETH OF THE OTHER FIXED RING GEAR, EACH PLANETARY MEMBER INCLUDING A HERRINGBONE GEAR HAVING HELICAL GEAR TEETH OF ONE HAND ON ONE OF THE SAID PORTIONS AND HELICAL GEAR TEETH OF THE OPPOSITE HAND ON THE OTHER OF SAID PORTIONS, SAID PLANETARY MEMBERS EACH INCLUDING MEANS RENDERING THE PORTIONS THEREOF RELATIVELY TURNABLE DURING OPERATION OF THE GEAR TRAIN; A THIRD RING GEAR COAXIAL WITH THE SAID FIXED RING GEARS AND HAVING INTERNAL HERRINGBONE GEAR TEETH IN MESH WITH THE TEETH OF THE HERRINGBONE GEAR ON EACH PLANETARY MEMBER; MEANS MOUNTING SAID THIRD RING GEAR FOR ROTATION AND AXIAL MOVEMENT; A SUN GEAR HAVING HERRINGBONE GEAR TEETH IN MESH WITH THE HERRINGBONE GEAR ON EACH PLANETARY MEMBER; AND MEANS MOUNTING THE SUN GEAR FOR ROTATION AND AXIAL MOVEMENT.
Claim 2
Dependent Claim
212 words
AN EPICYCLIC GEAR TRAIN COMPRISING A PAIR OF FIXED INTERNALLY TOOTHED RING GEARS SPACED APART ON A COMMON AXIS, ONE OF THE SAID GEARS HAVING HELICAL TEETH OF ONE HAND AND THE OTHER GEAR HAVING HELICAL TEETH OF THE OPPOSITE HAND; A PLURALITY OF AXIALLY MOVABLE COMPOUND PLANETARY MEMBERS EACH OF WHICH INCLUDES ONE PORTION HAVING HELICAL GEAR TEETH IN MESH WITH THE GEAR TEETH OF ONE OF THE FIXED RING GEARS, AND ANOTHER PORTION HAVING HELICAL GEAR TEETH IN MESH WITH THE GEAR TEETH OF THE OTHER FIXED RING GEAR, EACH PLANETARY MEMBER INCLUDING A HERRINGBONE GEAR HAVING HELICAL GEAR TEETH OF ONE HAND ON ONE OF THE SAID PORTIONS AND HELICAL GEAR TEETH OF THE OPPOSITE HAND ON THE OTHER OF SAID PORTIONS, SAID PLANETARY MEMBERS EACH INCLUDING MEANS RENDERING THE PORTIONS THEREOF RELATIVELY TURNABLE DURING OPERATION OF THE GEAR TRAIN; A THIRD RING GEAR COAXIAL WITH THE SAID FIXED RING GEARS AND HAVING INTERNAL HERRINGBONE GEAR TEETH IN MESH WITH THE TEETH OF THE HERRINGBONE GEAR ON EACH PLANETARY MEMBER; MEANS MOUNTING SAID THIRD RING GEAR FOR ROTATION AND AXIAL MOVEMENT; A SUN GEAR HAVING HERRINGBONE GEAR TEETH IN MESH WITH THE HERRINGBONE GEAR ON EACH PLANETARY MEMBER; AND MEANS MOUNTING THE SUN GEAR FOR ROTATION AND AXIAL MOVEMENT.
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |