US4068540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission control
Assignee: Massey Ferguson Inc
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Filing: 1976-08-04
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Granted: 1978-01-17
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Expires: 1996-08-04
Abstract
Abstract A transmission control useable with a transmission of the type having a first change gear mechanism for establishing a plurality of drive speeds and a second change gear mechanism for establishing either a forward or reverse drive for each of said plurality of drive gears, the transmission control including stop means capable of preventing the transmission from operating in one or more selected reverse speeds to prevent high speed reverse operation of a vehicle employing the transmission.
Inventors
- 👤 Joseph W. Beckerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:32
CPC Classifications
F; F16; F16H; F16H63/00; F16H63/02; F16H63/30; F16H63/34; F16H63/36; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/20073; Y10T74/20085
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
165 words
A transmission control for use with a transmission of the type having a first change gear mechanism for establishing a plurality of drive speeds and a second change gear mechanism for establishing either a forward or reverse drive for each of said plurality of drive speeds, said transmission control including: first shift lever means shiftable between a plurality of positions corresponding to each of said plurality of drive speeds; a first tube assembly interconnecting the first shift lever means with the first change gear mechanism; second shift lever means shiftable between forward and reverse positions; and a second tube assembly interconnecting the second shift lever means with the second change gear mechanism, the second tube assembly being coaxially disposed about the first tube assembly; said transmission control means being further characterized by the combination therewith of stop means mounted on the second tube assembly and contactable by the first shift lever means to prevent the transmission from operating in one or more selected reverse speeds.
Claim 2
Dependent Claim
165 words
A transmission control for use with a transmission of the type having a first change gear mechanism for establishing a plurality of drive speeds and a second change gear mechanism for establishing either a forward or reverse drive for each of said plurality of drive speeds, said transmission control including: first shift lever means shiftable between a plurality of positions corresponding to each of said plurality of drive speeds; a first tube assembly interconnecting the first shift lever means with the first change gear mechanism; second shift lever means shiftable between forward and reverse positions; and a second tube assembly interconnecting the second shift lever means with the second change gear mechanism, the second tube assembly being coaxially disposed about the first tube assembly; said transmission control means being further characterized by the combination therewith of stop means mounted on the second tube assembly and contactable by the first shift lever means to prevent the transmission from operating in one or more selected reverse speeds.
Claim 3
Dependent Claim
72 words
The transmission control set forth in claim 1 wherein each of said first and second tube assemblies is rotatable about its axis, and wherein the stop means is provided with a generally vertically extending stop surface contactable with the first shift lever means and operable to prevent the second shift lever means from being shifted into a reverse position when the first shift lever means is disposed in a high speed position.
Claim 4
Dependent Claim
89 words
The transmission control set forth in claim 1 wherein the first tube assembly is mounted for axial shifting movement and the second tube assembly is mounted for rotation movement about the axis of the first tube assembly, and wherein the stop means is provided with a generally horizontally extending stop surface contactable with the first shift lever means and operable to prevent the first shift lever means from being moved downwardly into a high speed range position when the second shift lever means is disposed in a reverse position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-16 | 1981-07-18 | 1982-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-16 | 1985-07-18 | 1986-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-16 | 1989-07-18 | 1990-01-17 | $7700.00 | Window Closed / Lapsed |