Patent US3276290A successfully refreshed from Google Patents.
US3276290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential mechanism
Assignee: DUALOC ENGINEERING Co
•
Filing: 1964-01-29
•
Granted: 1966-10-04
•
Expires: 1984-01-29
Abstract
No abstract record available.
Inventors
- 👤 Ralph R Randall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:09
CPC Classifications
F; F16; F16H; F16H48/00; F16H48/20; F16H48/22; F16H48/06; F16H48/08; F16H48/24; F16H2048/201
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
199 words
A DIFFERENTIAL MECHANISM COMPRISING A ROTATABLE CASE FORMING A DRIVING MEMBER, A PAIR OF SPACED APART, AXIALLY ALIGNED AXLE GEARS IN THE CASE JOURNALLED FOR ROTATION AT THE AXIS OF ROATATION OF THE CASE, A PINION GEAR INTERPOSED BETWEEN AND MESHING WITH EACH OF SAID AXLE GEARS, SAID PINION GEAR HAVING A PROJECTION THEREON SYMMETRICAL TO THE AXIS OF ROTATION OF SAID PINION GEAR, SAID PROJECTION HAVING A PAIR OF PARALLEL SIDE FACES WHICH EXTEND AXIALLY OF SAID PINION GEAR, A CIRCULAR BEARING SEAT IN THE CASE INTO WHICH SAID PROJECTION EXTENDS, BEARING MEANS JOURNALLED IN SAID BEARING SEAT AND PROVIDING A NONCIRCULAR OPENING IN WHICH SAID PROJECTION IS ENGAGED TO PROVIDE A DRIVING CONNECTION BETWEEN SAID PINION AND SAID BEARING MEANS, SAID OPENING BEING SHAPED TO CLOSELY ENGAGE SAID PARALLEL SIDE FACES OF SAID PROJECTION AND TO PERMIT A SLIGHT LATERAL SHIFTING OF THE PROJECTION IN THE OPENING IN A DIRECTION PARALLEL TO SAID SIDE FACES WHEREBY WHEN SAID PROJECTION SHIFTS LATERALLY IN SAID OPENING AND THE PINION IS IN MESHING RELATION WITH THE AXLE GEARS, THE PINION ROCKS TO A POSITION ECCENTRIC RELATIVE TO SAID BEARING SEAT TO THEREBY LOCK THE PINION AGAINST ROTATION IN THE CASE.
Claim 2
Dependent Claim
199 words
A DIFFERENTIAL MECHANISM COMPRISING A ROTATABLE CASE FORMING A DRIVING MEMBER, A PAIR OF SPACED APART, AXIALLY ALIGNED AXLE GEARS IN THE CASE JOURNALLED FOR ROTATION AT THE AXIS OF ROATATION OF THE CASE, A PINION GEAR INTERPOSED BETWEEN AND MESHING WITH EACH OF SAID AXLE GEARS, SAID PINION GEAR HAVING A PROJECTION THEREON SYMMETRICAL TO THE AXIS OF ROTATION OF SAID PINION GEAR, SAID PROJECTION HAVING A PAIR OF PARALLEL SIDE FACES WHICH EXTEND AXIALLY OF SAID PINION GEAR, A CIRCULAR BEARING SEAT IN THE CASE INTO WHICH SAID PROJECTION EXTENDS, BEARING MEANS JOURNALLED IN SAID BEARING SEAT AND PROVIDING A NONCIRCULAR OPENING IN WHICH SAID PROJECTION IS ENGAGED TO PROVIDE A DRIVING CONNECTION BETWEEN SAID PINION AND SAID BEARING MEANS, SAID OPENING BEING SHAPED TO CLOSELY ENGAGE SAID PARALLEL SIDE FACES OF SAID PROJECTION AND TO PERMIT A SLIGHT LATERAL SHIFTING OF THE PROJECTION IN THE OPENING IN A DIRECTION PARALLEL TO SAID SIDE FACES WHEREBY WHEN SAID PROJECTION SHIFTS LATERALLY IN SAID OPENING AND THE PINION IS IN MESHING RELATION WITH THE AXLE GEARS, THE PINION ROCKS TO A POSITION ECCENTRIC RELATIVE TO SAID BEARING SEAT TO THEREBY LOCK THE PINION AGAINST ROTATION IN THE CASE.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |