US3855875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch pedal operated down shifting mechanism
Assignee: Deutz Allis Corp
•
Filing: 1972-12-20
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Granted: 1974-12-24
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Expires: 1992-12-20
Abstract
Abstract A mechanism for shifting down the transmission speed range when the clutch pedal is moved to a throttling position.
Inventors
- 👤 K Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:22
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/103; B60W; B60W10/00; B60W10/02; B60W10/10; B60W30/00; B60W30/18; B60W30/1819; B60K; B60K2702/00; B60K2702/08; B60K2702/10; B60K2702/12; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20207; Y10T74/20213; Y10T74/2022
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
128 words
A vehicle clutch and shift mechanism for a vehicle transmission including, a pedal, a hydraulic clutch actuating valve adapted for operating a vehicle clutch, a hydraulic clutch actuating linkage connected between said pedal and said valve for operating said valve with said pedal, a shift control adapted for operating a multiple speed power shift transmission including, a speed range shift lever for shifting the transmission through a plurality of speed ranges, a manual control lever means connected to said speed range shift lever, a cam means connected to said hydraulic clutch actuating linkage and engaging said shift lever to bias said shift lever to the lower speed range positions when said clutch pedal operates said hydraulic valve to throttle hydraulic fluid for limited slippage of the vehicle clutch.
Claim 2
Dependent Claim
128 words
A vehicle clutch and shift mechanism for a vehicle transmission including, a pedal, a hydraulic clutch actuating valve adapted for operating a vehicle clutch, a hydraulic clutch actuating linkage connected between said pedal and said valve for operating said valve with said pedal, a shift control adapted for operating a multiple speed power shift transmission including, a speed range shift lever for shifting the transmission through a plurality of speed ranges, a manual control lever means connected to said speed range shift lever, a cam means connected to said hydraulic clutch actuating linkage and engaging said shift lever to bias said shift lever to the lower speed range positions when said clutch pedal operates said hydraulic valve to throttle hydraulic fluid for limited slippage of the vehicle clutch.
Claim 3
Dependent Claim
52 words
A vehicle clutch and shift mechanism for a vehicle transmission as set forth in claim 1 including, a pedal stop adapted for engaging a portion of a pedal in its retracted position, a clutch return spring connected to said pedal for returning said pedal to its normally retracted position against said stop.
Claim 4
Dependent Claim
36 words
A vehicle clutch and shift mechanism for a vehicle transmission as set forth in claim 1 wherein said hydraulic clutch actuating valve includes, a valve spool, a spring normally biasing said valve spool against said linkage.
Claim 5
Dependent Claim
35 words
A vehicle clutch and shift mechanism for a vehicle transmission as set fOrth in claim 1 wherein said hydraulic clutch actuating valve includes, means adapted for operating a hydraulic clutch, when said pedal is depressed.
Claim 6
Dependent Claim
51 words
A vehicle clutch and shift mechanism for a vehicle transmission as set forth in claim 1 wherein said pedal includes, means normally retracting said pedal to its retracted position, a hydraulic valve adapted for supplying pressurized fluid for engaging a hydraulic clutch when said pedal is in its normally retracted position.
Claim 7
Dependent Claim
48 words
A vehicle clutch and shift mechanism for a vehicle transmission as set forth in claim 1 including, a multiple speed power shift transmission, means on said hydraulic clutch actuating valve pivotally supporting said shift lever, means on said hydraulic clutch actuating valve for pivotally supporting said cam means.
Claim 8
Dependent Claim
43 words
A vehicle clutch and shift mechanism for a vehicle transmission as set forth in claim 1 wherein said hydraulic clutch actuating valve includes, an actuating arm, a spool in said valve operated by said arm for controlling the operation of the vehicle clutch.
Claim 9
Dependent Claim
55 words
A vehicle clutch and shift mechanism for a vehicle transmission as set forth in claim 1 wherein said hydraulic clutch actuating valve includes, a spool, a spool actuating arm, said cam means defines a lever having a cam surface for engaging said shift lever, and a link connecting said actuating arm with said cam means.
Claim 10
Dependent Claim
41 words
A vehicle clutch and shift mechanism for a vehicle transmission as set forth in claim 1 wherein said cam means defines a stop to prevent said shift lever from shifting to the high speed range positions when said pedal is operated.
Claim 11
Dependent Claim
31 words
A vehicle clutch and shift mechanism for a vehicle transmission as set forth in claim 1 wherein said cam means defines a lever having a cam surface engaging said shift lever.
References Cited (Backward Citations)
US2872000A
Cited
FR1358300A
Cited
US3505896A
Cited
US3537328A
Cited
US3687248A
Cited
US3741356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |