US4829849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power transmission system for vehicles
Assignee: Honda Motor Co Ltd
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Filing: 1987-08-20
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Granted: 1989-05-16
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Expires: 2007-08-20
Abstract
Abstract A power transmission system suitable for use in a four-wheel drive motorcar. A torque generated from a power source is directly transmitted to a first axle, and it is transmitted to a second axle via a torque transmission device making use of viscosity of fluid. Between the power source and the second axle is provided torque limiter means for limiting a torque transmitted to the second axle to smaller than a preset value. Even if the torque transmission device should take a locked condition, an excessively large torque would not be exerted upon the respective parts in the power transmission system, and hence a torque transmission system can be made light in weight.
Inventors
- 👤 Katsuhiko Masuda
- 👤 Tetsuro Hamada
- 👤 Kazunori Shibuya
- 👤 Kazuhiko Shimada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:40
CPC Classifications
B; B60; B60K; B60K17/00; B60K17/34; B60K17/348; B60K17/35; B60K17/3505; B60K17/351; F; F16; F16D; F16D35/00; F16D35/005; F16H; F16H48/00; F16H48/12; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19005; Y10T74/19642; Y10T74/19688; Y10T74/19693
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
138 words
A power transmission system for vehicles in which a torque generated from a power source is transmitted directly to a first axle and is also transmitted to a second axle via a torque transmission device making use of viscosity of fluid; characterized in that torque limiter means for limiting a torque transmitted to said second axle to smaller than a preset value is provided between said power source and said second axle, wherein said torque limiter means consists of a clutch member driven by an input shaft of said torque transmission device and slidable in the axial direction, a plurality of clutch plates are provided between a coupling case in said torque transmission device and said clutch member, and a resilient member is provided for pressing said clutch member to make said clutch plates engage with each other.
Claim 2
Dependent Claim
138 words
A power transmission system for vehicles in which a torque generated from a power source is transmitted directly to a first axle and is also transmitted to a second axle via a torque transmission device making use of viscosity of fluid; characterized in that torque limiter means for limiting a torque transmitted to said second axle to smaller than a preset value is provided between said power source and said second axle, wherein said torque limiter means consists of a clutch member driven by an input shaft of said torque transmission device and slidable in the axial direction, a plurality of clutch plates are provided between a coupling case in said torque transmission device and said clutch member, and a resilient member is provided for pressing said clutch member to make said clutch plates engage with each other.
Claim 3
Dependent Claim
47 words
A power transmission system as claimed in claim 1, wherein said clutch member is coupled to said input shaft via bevel gears meshed with each other so that a thrust generated by meshing between said bevel gears is opposed by the pressing force of said resilient member.
Claim 4
Dependent Claim
44 words
A power transmission system as claimed in claim 1, wherein said clutch member is coupled to said input shaft via a claw clutch so that a thrust generated by meshing in said claw clutch is opposed by the pressing force of said resilient member.
Claim 5
Dependent Claim
25 words
A power transmission system as claimed in claim 1, wherein a differential gear unit is interposed between said torque transmission device and said second axle.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-15 | 1992-11-14 | 1993-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-15 | 1996-11-14 | 1997-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-15 | 2000-11-14 | 2001-05-16 | $7700.00 | Window Closed / Lapsed |