Patent US3304806A successfully refreshed from Google Patents.
US3304806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positive drive differential gearing
Assignee: Ford Motor Co
•
Filing: 1965-05-10
•
Granted: 1967-02-21
•
Expires: 1985-05-10
Abstract
No abstract record available.
Inventors
- 👤 Dale C Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:17
CPC Classifications
F; F16; F16H; F16H48/00; F16H48/12; F16H48/16; F16H48/06; F16H48/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A POSITIVE DRIVE DIFFERENTIAL MECHANISM COMPRISING A DIFFERENTIAL CARRIER, A PAIR OF DIFFERENTIAL SIDE GEARS IN SAID CARRIER, MEANS FOR CONNECTING EACH SIDE GEAR TO A SEPARATE DRIVEN AXLE SHAFT, A PLURALITY OF DIFFERENTIAL PINIONS ROTATABLY SUPPORTED BY SAID CARRIER IN MESHING ENGAGEMENT WITH SAID SIDE GEARS, A RING GEAR CARRIED BY SAID CARRIER, A PLURALITY OF RADIAL GROOVES FORMED IN EACH PINION, A REACTION SURFACE CARRIED BY SAID CARRIER DIRECTLY ADJACENT SAID PINIONS AND COOPERATING WITH SAID GROOVES TO DEFINE RADIAL CHANNELS, CENTRIFUGALLY OPERATED CLUTCH ELEMENTS MOVABLY SITUATED IN SAID CHANNELS, CLUTCH ELEMENT BEING URGED UNDER THE INFLUENCE OF CENTRIFUGAL FORCE IN A RADIALLY OUTWARD DIRECTION WITH RESPECT TO THE AXIS OF SAID SIDE GEARS DURING NORMAL DRIVING OPERATION OF SAID ASSEMBLY AND BEING URGED IN A RADIAL DIRECTION WITH RESPECT TO THE AXIS OF SAID PINIONS WHEN ONE SIDE GEAR IS OVERSPEEDED WITH RESPECT TO THE OTHER.
Claim 2
Dependent Claim
149 words
A POSITIVE DRIVE DIFFERENTIAL MECHANISM COMPRISING A DIFFERENTIAL CARRIER, A PAIR OF DIFFERENTIAL SIDE GEARS IN SAID CARRIER, MEANS FOR CONNECTING EACH SIDE GEAR TO A SEPARATE DRIVEN AXLE SHAFT, A PLURALITY OF DIFFERENTIAL PINIONS ROTATABLY SUPPORTED BY SAID CARRIER IN MESHING ENGAGEMENT WITH SAID SIDE GEARS, A RING GEAR CARRIED BY SAID CARRIER, A PLURALITY OF RADIAL GROOVES FORMED IN EACH PINION, A REACTION SURFACE CARRIED BY SAID CARRIER DIRECTLY ADJACENT SAID PINIONS AND COOPERATING WITH SAID GROOVES TO DEFINE RADIAL CHANNELS, CENTRIFUGALLY OPERATED CLUTCH ELEMENTS MOVABLY SITUATED IN SAID CHANNELS, CLUTCH ELEMENT BEING URGED UNDER THE INFLUENCE OF CENTRIFUGAL FORCE IN A RADIALLY OUTWARD DIRECTION WITH RESPECT TO THE AXIS OF SAID SIDE GEARS DURING NORMAL DRIVING OPERATION OF SAID ASSEMBLY AND BEING URGED IN A RADIAL DIRECTION WITH RESPECT TO THE AXIS OF SAID PINIONS WHEN ONE SIDE GEAR IS OVERSPEEDED WITH RESPECT TO THE OTHER.
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) | 1970-02-20 | 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 |