US3939936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual converter transmission arrangement
Assignee: Caterpillar Inc
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Filing: 1974-05-17
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Granted: 1976-02-24
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Expires: 1994-05-17
Abstract
Abstract A vehicle, which includes a motor having rotary output means, further includes a pair of torque converters, both driven by the rotary output means of the motor. Each torque converter drives a multi-speed transmission, and both transmissions drive a rotatable shaft, the rotation of which drives the front and rear wheels of the vehicle.
Inventors
- 👤 David S. Vinton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:27
CPC Classifications
B; B60; B60K; B60K17/00; B60K17/04; B60K17/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
264 words
In combination with a vehicle including forward and rearward means rotatable to drive said vehicle, and a motor including rotary output means; a first output gear train drivingly connected with said rotary output means; a first output shaft rotated by the output gear of said first output gear train; a second output gear train drivingly connected with said rotary output means; a second output shaft rotated by the output gear of said second output gear train; each output gear being independently driven through a respective one of said output gear trains to in turn drive a respective output shaft; a first torque converter connected to said first output shaft to be driven thereby; a second torque converter connected to said second output shaft to be driven thereby; a third shaft rotatably supported relative to said vehicle and connected to the forward and rearward means, so that rotation of said third shaft rotates said forward and rearward means to drive said vehicle; a first multi-speed transmission drivingly connecting said third shaft and first torque converter; a second multi-speed transmission drivingly connecting said third shaft and second torque converter, so that said third shaft is driven through both said first and second torque converters by the rotary output means; the first and second torque converters being spaced laterally of each other relative to the forward-rearward axis of the vehicle on either side of the centerline of the vehicle; the first and second transmissions being spaced laterally of each other relative to the forward-rearward axis of the vehicle on either side of the centerline of the vehicle.
Claim 2
Dependent Claim
264 words
In combination with a vehicle including forward and rearward means rotatable to drive said vehicle, and a motor including rotary output means; a first output gear train drivingly connected with said rotary output means; a first output shaft rotated by the output gear of said first output gear train; a second output gear train drivingly connected with said rotary output means; a second output shaft rotated by the output gear of said second output gear train; each output gear being independently driven through a respective one of said output gear trains to in turn drive a respective output shaft; a first torque converter connected to said first output shaft to be driven thereby; a second torque converter connected to said second output shaft to be driven thereby; a third shaft rotatably supported relative to said vehicle and connected to the forward and rearward means, so that rotation of said third shaft rotates said forward and rearward means to drive said vehicle; a first multi-speed transmission drivingly connecting said third shaft and first torque converter; a second multi-speed transmission drivingly connecting said third shaft and second torque converter, so that said third shaft is driven through both said first and second torque converters by the rotary output means; the first and second torque converters being spaced laterally of each other relative to the forward-rearward axis of the vehicle on either side of the centerline of the vehicle; the first and second transmissions being spaced laterally of each other relative to the forward-rearward axis of the vehicle on either side of the centerline of the vehicle.
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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) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |