Patent US2324758A successfully refreshed from Google Patents.
US3556271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch and torque converter transmission having an integral governor for constant output speed
Assignee: Twin Disc Inc
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Filing: 1969-06-02
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Granted: 1971-01-19
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Expires: 1989-06-02
Abstract
Abstract A power transmission having a governor controlled friction clutch and torque converter for maintaining a constant ground speed of a vehicle. The governor is centrifugally actuated and is located within the converter housing and is driven by or carried on the turbine of the converter. The centrifugally actuated governor controls a centrifugal valve which is located in a hydraulically actuated and modulatable friction clutch, whereby the amount of clutch engagement can be varied to thereby vary the power input to the converter and maintain the output speed of the converter constant.
Inventors
- 👤 Conrad R Hilpert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:44
CPC Classifications
F; F16; F16H; F16H45/00; F16H2045/002; Y; Y10; Y10T; Y10T137/00; Y10T137/0971; Y10T137/108; Y10T137/1135; Y10T137/1153
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
136 words
A Power transmission for maintaining constant ground speed of a vehicle comprising; a power source; an output sensitive and hydraulically actuated friction clutch having control means which is sensitive to clutch output for controlling clutch engagement, said clutch connected to and driven from said power source; a torque converter having a housing and driven by said clutch and having a turbine assembly within said housing, and a centrifugally actuated governor mounted within said housing and attached to and driven by said turbine assembly for sensing the output speed of said converter and also connected to said clutch for controlling the actuating fluid in the hydraulically actuated clutch in accordance with the output speed of said converter, whereby said clutch controls the power input to said torque converter to maintain the output speed of the converter constant.
Claim 2
Dependent Claim
136 words
A Power transmission for maintaining constant ground speed of a vehicle comprising; a power source; an output sensitive and hydraulically actuated friction clutch having control means which is sensitive to clutch output for controlling clutch engagement, said clutch connected to and driven from said power source; a torque converter having a housing and driven by said clutch and having a turbine assembly within said housing, and a centrifugally actuated governor mounted within said housing and attached to and driven by said turbine assembly for sensing the output speed of said converter and also connected to said clutch for controlling the actuating fluid in the hydraulically actuated clutch in accordance with the output speed of said converter, whereby said clutch controls the power input to said torque converter to maintain the output speed of the converter constant.
Claim 3
Dependent Claim
35 words
The transmission set forth in claim 1 further characterized in that said output sensitive clutch includes a centrifugally actuated control valve for controlling the pressure fluid that causes actuation of said hydraulically actuated friction clutch.
Claim 4
Dependent Claim
49 words
The transmission according to claim 2 including a source of control pressure fluid connected with said governor for adjusting said governor, and fluid conduit means from said control valve and to said governor whereby the governor can dump pressure fluid from said hydraulically actuated clutch via said control valve.
Claim 5
Dependent Claim
124 words
A power transmission for maintaining constant ground speed of a vehicle comprising; a power source; an output sensitive and hydraulically actuated friction clutch having control means which is sensitive to clutch output for controlling clutch engagement, said clutch connected to and driven from said power source; a torque converter driven by said clutch and having a turbine assembly within a housing, and a centrifugally actuated governor mounted in said turbine assembly for sensing the output speed of said converter and connected to said control means for controlling the actuating fluid in the hydraulically actuated clutch in accordance with the output speed of said converter, whereby said clutch controls the power input to said torque converter to maintain the output speed of the converter constant.
Claim 6
Dependent Claim
124 words
A power transmission for maintaining constant ground speed of a vehicle comprising; a power source; an output sensitive and hydraulically actuated friction clutch having control means which is sensitive to clutch output for controlling clutch engagement, said clutch connected to and driven from said power source; a torque converter driven by said clutch and having a turbine assembly within a housing, and a centrifugally actuated governor mounted in said turbine assembly for sensing the output speed of said converter and connected to said control means for controlling the actuating fluid in the hydraulically actuated clutch in accordance with the output speed of said converter, whereby said clutch controls the power input to said torque converter to maintain the output speed of the converter constant.
Claim 7
Dependent Claim
35 words
The transmission set forth in claim 4 further characterized in that said output sensitive clutch includes a centrifugally actuated control valve for controlling the pressure fluid that causes actuation of said hydraulically actuated friction clutch.
Claim 8
Dependent Claim
49 words
The transmission according to claim 5 including a source of control pressure fluid connected with said governor for adjusting said governor, and fluid conduit means from said control valve and to said governor whereby the governor can dump pressure fluid from said hydraulically actuated clutch via said control valve.
References Cited (Backward Citations)
US3358796A
Cited
US3469663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |