US3186258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Limited slip differential
Assignee: Old Carco LLC
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Filing: 1961-05-18
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Granted: 1965-06-01
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Expires: 1981-05-18
Abstract
No abstract record available.
Inventors
- 👤 Frederic C Meldola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:46
CPC Classifications
F; F16; F16H; F16H48/00; F16H48/20; F16H48/22; F16H48/06; F16H48/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
202 words
IN A DIFFERENTIAL TRANSMISSION UNIT, THE COMBINATION COMPRISING A ROTATABLE GEAR CASE, A POWER TRANSMISSION GEAR TRAIN OPERATIVELY POSITIONED WITHIN SAID GEAR CASE AND INCLUDING A COMPENSATING GEAR AND A PAIR OF SIDE GEARS INTERMESHING THEREWITH, CLUTCH MEANS OPERATIVELY DISPOSED BETWEEN EACH OF SAID SIDE GEARS AND SAID GEAR CASE FOR OPPOSING RELATIVE ROTATIONAL MOVEMENT OF SAID SIDE GEARS WITH RESPECT TO SAID GEAR CASE, EACH OF SAID CLUTCH MEANS COMPRISING AN ANNULAR-LIKE FRICTION MEMBER RESPECTIVELY OPERATIVELY CONNECTED TO SAID SIDE GEARS FOR ROTATIONAL MOVEMENT THEREWITH, A FIRST FRICTION SURFACE OF GENERALLY CONICAL CONFIGURATION FORMED ON EACH OF SAID FRICTION MEMBERS ADAPTED TO RESPECTIVELY FRICTIONALLY ENGAGE SECOND SPACED FRICTION SURFACES OF GENERALLY CONICAL CONFIGURATION CARRIED BY SAID GEAR CASE INTERNALLY THEREOF, SPACED ANNULAR-LIKE PRESSURE PLATES CONTINUALLY ENGAGING PORTIONS OF SAID FRICTION MEMBERS, A PLURALITY OF SPRING MEMBERS URGING SAID PRESSURE PLATES IN DIRECTIONS CAUSING SAID FIRST FRICTION SURFACES TO ENGAGE SAID SECOND FRICTIN SURFACES THE COMPENSATING GEAR AND SIDE GEARS BEING MESHED IN A RELATIONSHIP TO PROVIDE A COMPONENT OF TOOTH PRESSURE FOR URGING SAID SIDE GEARS AXIALLY AGAINST SAID RESPECTIVE FRICTION MEMBERS IN ORDER TO INCREASE THE FORCE APPLIED TO SAID FRICTION MEMBERS IN PROPORTION TO INPUT TORQUE TO THE TRANSMISSION.
Claim 2
Dependent Claim
202 words
IN A DIFFERENTIAL TRANSMISSION UNIT, THE COMBINATION COMPRISING A ROTATABLE GEAR CASE, A POWER TRANSMISSION GEAR TRAIN OPERATIVELY POSITIONED WITHIN SAID GEAR CASE AND INCLUDING A COMPENSATING GEAR AND A PAIR OF SIDE GEARS INTERMESHING THEREWITH, CLUTCH MEANS OPERATIVELY DISPOSED BETWEEN EACH OF SAID SIDE GEARS AND SAID GEAR CASE FOR OPPOSING RELATIVE ROTATIONAL MOVEMENT OF SAID SIDE GEARS WITH RESPECT TO SAID GEAR CASE, EACH OF SAID CLUTCH MEANS COMPRISING AN ANNULAR-LIKE FRICTION MEMBER RESPECTIVELY OPERATIVELY CONNECTED TO SAID SIDE GEARS FOR ROTATIONAL MOVEMENT THEREWITH, A FIRST FRICTION SURFACE OF GENERALLY CONICAL CONFIGURATION FORMED ON EACH OF SAID FRICTION MEMBERS ADAPTED TO RESPECTIVELY FRICTIONALLY ENGAGE SECOND SPACED FRICTION SURFACES OF GENERALLY CONICAL CONFIGURATION CARRIED BY SAID GEAR CASE INTERNALLY THEREOF, SPACED ANNULAR-LIKE PRESSURE PLATES CONTINUALLY ENGAGING PORTIONS OF SAID FRICTION MEMBERS, A PLURALITY OF SPRING MEMBERS URGING SAID PRESSURE PLATES IN DIRECTIONS CAUSING SAID FIRST FRICTION SURFACES TO ENGAGE SAID SECOND FRICTIN SURFACES THE COMPENSATING GEAR AND SIDE GEARS BEING MESHED IN A RELATIONSHIP TO PROVIDE A COMPONENT OF TOOTH PRESSURE FOR URGING SAID SIDE GEARS AXIALLY AGAINST SAID RESPECTIVE FRICTION MEMBERS IN ORDER TO INCREASE THE FORCE APPLIED TO SAID FRICTION MEMBERS IN PROPORTION TO INPUT TORQUE TO THE TRANSMISSION.
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) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |