Patent US1329587A successfully refreshed from Google Patents.
Patent US4729259A successfully refreshed from Google Patents.
US4729259A
Expired / Lapsed
US
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Interaxle differential system for connecting two driven axles of a motor vehicle
Assignee: Steyr Daimler Puch AG
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Filing: 1987-02-09
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Granted: 1988-03-08
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Expires: 2007-02-09
Abstract
Abstract An interaxle differential system connecting two driven axles of a motor vehicle comprises a restrainable differential and a planetary gear train, which comprises three torque-transmitting members which have parallel axes. Two of said torque-transmitting members are operatively connected to two output shafts of the differential. A restraining device is connected to the third of said torque-transmitting members. In an interaxle differential system for use in a passenger car, the restraining device is a controllable liquid friction coupling, one coupling half of which is held against rotation.
Inventors
- 👤 Heribert Lanzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:37
CPC Classifications
F; F16; F16H; F16H48/00; F16H48/05; B; B60; B60K; B60K17/00; B60K17/34; B60K17/344; B60K17/346; B60K17/3462; B60K17/3465; F16H48/06; F16H48/08; F16H48/10; F16H48/20; F16H48/26; F16H48/30; F16H2048/204
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
84 words
A drive system for a motor vehicle having two driven axles, comprising an interaxle differential having two output shafts, said output shafts respectively operatively connected to said driven axles, a planetary gear train comprising first, second, and third torque-transmitting members having parallel axes, said first and second torque-transmitting members being respectively operatively connected to said output shafts, and a liquid friction coupling having a first coupling half operatively connected to said third torque-transmitting member, and a second coupling half which is held against rotation.
Claim 2
Dependent Claim
84 words
A drive system for a motor vehicle having two driven axles, comprising an interaxle differential having two output shafts, said output shafts respectively operatively connected to said driven axles, a planetary gear train comprising first, second, and third torque-transmitting members having parallel axes, said first and second torque-transmitting members being respectively operatively connected to said output shafts, and a liquid friction coupling having a first coupling half operatively connected to said third torque-transmitting member, and a second coupling half which is held against rotation.
Claim 3
Dependent Claim
13 words
The drive system of claim 1, wherein said liquid friction coupling is controllable.
Claim 4
Dependent Claim
31 words
The drive system of claim 1, wherein one of said first and second torque-transmitting members is non-rotably connected to a shaft, which is operatively connected to the other of said axles.
Claim 5
Dependent Claim
15 words
The drive system of claim 1, wherein said liquid friction coupling comprises a fluid-operable brake.
Claim 6
Dependent Claim
14 words
The drive system of claim 4, wherein said brake comprises a multiple disc brake.
Claim 7
Dependent Claim
90 words
An interaxle differential for a motor vehicle having two driven axles, comprising two output shafts respectively operatively connected to said driven axles, a planetary gear train comprising first, second, and third torque-transmitting members having parallel axes, said first and second torque-transmitting members being respectively operatively connected to said output shafts, and a liquid friction coupling which transmits torque by means of viscous shear forces, said liquid friction coupling having a first coupling half operatively connected to said third torque-transmitting member, and a second coupling half which is held against rotation.
Claim 8
Dependent Claim
90 words
An interaxle differential for a motor vehicle having two driven axles, comprising two output shafts respectively operatively connected to said driven axles, a planetary gear train comprising first, second, and third torque-transmitting members having parallel axes, said first and second torque-transmitting members being respectively operatively connected to said output shafts, and a liquid friction coupling which transmits torque by means of viscous shear forces, said liquid friction coupling having a first coupling half operatively connected to said third torque-transmitting member, and a second coupling half which is held against rotation.
References Cited (Backward Citations)
DE269581C
Cited
GB620723A
Cited
FR986538A
Cited
FR1024532A
Cited
US2689489A
Cited
US2874790A
Cited
GB1210964A
Cited
US3605965A
Cited
US3760922A
Cited
US3780821A
Cited
SU821239A1
Cited
WO1981001596A1
Cited
JPS5863525A
Cited
US4644823A
Cited
EP0118155A1
Cited
WO1984004792A1
Cited
WO1985001784A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-08 | 1991-09-07 | 1992-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-08 | 1995-09-07 | 1996-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-08 | 1999-09-07 | 2000-03-08 | $7700.00 | Window Closed / Lapsed |