Patent US3053567A successfully refreshed from Google Patents.
Patent US4583426A successfully refreshed from Google Patents.
US4583426A
Expired / Lapsed
US
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Continuous torque transmission with manual transmission and converter
Assignee: Renault Trucks SAS
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Filing: 1984-06-28
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Granted: 1986-04-22
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Expires: 2004-06-28
Abstract
Abstract Continuous torque transmission, particularly for motor vehicles, comprising a manual transmission (3), driven by a combustion engine (1) by a torque converter (2). This torque transmission comprises a double clutch (4) whose movement inputs are connected to the turbine (9) of said torque converter (2), and whose first movement output is connected to the input of the transmission (3), and whose second movement output is connected to any point of the kinematic chain of said torque transmission, while remaining downstream from the input shaft of the transmission.
Inventors
- 👤 Clement Chassagnette
- 👤 Philippe Quemerais
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:59
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/006; F16H61/00; F16H61/04; F16H61/0403; F16H2061/0407; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19149; Y10T74/19158
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
134 words
A process for controlling a continuous torque transmission having a torque converter, a manual transmission and a double clutch with a driving member connected to said torque converter and with first and second driven members, said first driven member being connected to an input of said manual transmission, said second driven member being connected to any point of the kinematic chain of said torque transmission downstream of said manual transmission input, said process comprising the steps of: releasing said first driven member to terminate torque transmission to said input; engaging said second driven member to initiate torque transmission to said any point; shifting gears of said manual transmission; releasing said second driven member to terminate torque transmission to said any point; and engaging said first driven member to initiate torque transmission to said input.
Claim 2
Dependent Claim
134 words
A process for controlling a continuous torque transmission having a torque converter, a manual transmission and a double clutch with a driving member connected to said torque converter and with first and second driven members, said first driven member being connected to an input of said manual transmission, said second driven member being connected to any point of the kinematic chain of said torque transmission downstream of said manual transmission input, said process comprising the steps of: releasing said first driven member to terminate torque transmission to said input; engaging said second driven member to initiate torque transmission to said any point; shifting gears of said manual transmission; releasing said second driven member to terminate torque transmission to said any point; and engaging said first driven member to initiate torque transmission to said input.
Claim 3
Dependent Claim
31 words
The process of claim 1 wherein said torque transmission includes a range box immediately downstream of said manual transmission and wherein said any point is an input of said range box.
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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) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |