Patent US4049096A successfully refreshed from Google Patents.
US4049096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parking brake release for transmission clutch
Assignee: CDI SALES CORP A MN CORP
•
Filing: 1975-12-22
•
Granted: 1977-09-20
•
Expires: 1995-12-22
Abstract
Abstract A vehicle control system including a hydraulically actuated transmission with transmission control means and a vehicle brake for braking the vehicle with interconnecting means for neutralizing power transmission through the transmission when the parking brake is actuated.
Inventors
- 👤 John W. Barth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:21
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/103; B60W; B60W10/00; B60W10/10; B60W10/18; B60W30/00; B60W30/18; B60W30/1819; F; F16; F16H; F16H59/00; F16H59/02; F16H59/08; F16H59/10; F16H59/50; F16H59/54
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
120 words
A vehicle control system comprising, a source of pressurized fluid, a hydraulically actuated vehicle transmission, a transmission shift selector valve for selectively engaging said transmission, a mechanically operated vehicle parking friction brake, brake operating means including, a brake lever, a brake actuating means operatively connected between said brake lever and said vehicle parking brake for actuating said vehicle parking brake, a cutoff valve connected through said shift selector valve between said source of pressurized fluid and said transmission, a cable connected between said brake operating means and said transmission cutoff valve for operating said cutoff valve to interrupt communication between said source of pressurized fluid and said transmission for rendering said transmission inoperative when said vehicle parking brake is actuated.
Claim 2
Dependent Claim
120 words
A vehicle control system comprising, a source of pressurized fluid, a hydraulically actuated vehicle transmission, a transmission shift selector valve for selectively engaging said transmission, a mechanically operated vehicle parking friction brake, brake operating means including, a brake lever, a brake actuating means operatively connected between said brake lever and said vehicle parking brake for actuating said vehicle parking brake, a cutoff valve connected through said shift selector valve between said source of pressurized fluid and said transmission, a cable connected between said brake operating means and said transmission cutoff valve for operating said cutoff valve to interrupt communication between said source of pressurized fluid and said transmission for rendering said transmission inoperative when said vehicle parking brake is actuated.
Claim 3
Dependent Claim
29 words
A vehicle control system as set forth in claim 1 wherein said brake actuating means operatively connected between said brake lever and said vehicle parking brake defines a cable.
Claim 4
Dependent Claim
20 words
A vehicle control system as set forth in claim 1 wherein said vehicle parking brake defines a drive shaft brake.
Claim 5
Dependent Claim
18 words
A vehicle control system as set forth in claim 1 wherein said cutoff valve defines a spool valve.
Claim 6
Dependent Claim
88 words
A vehicle control system as set forth in claim 1 wherein said brake actuating means operatively connected between said brake lever and said vehicle parking brake includes a cable, said cable between said brake operating means and said transmission cutoff valve includes a sheathed cable, means supporting the sheath of said sheathed cable on said brake and said cutoff valve, said brake actuating cable thereby operating said brake through tension of the cable and said sheathed cable operating said transmission cutoff valve through compression of said sheathed cable.
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) | 1980-09-19 | 1981-03-21 | 1981-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-19 | 1985-03-21 | 1985-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-19 | 1989-03-21 | 1989-09-20 | $7700.00 | Window Closed / Lapsed |