US3139766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission controls
Assignee: Frank G Hough Co
•
Filing: 1961-12-05
•
Granted: 1964-07-07
•
Expires: 1981-12-05
Abstract
No abstract record available.
Inventors
- 👤 Thorvald G Granryd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:05
CPC Classifications
B; B60; B60K; B60K17/00; B60K17/04; B60K17/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A VALVE MEANS FOR A CLUTCH CONTROL ARRANGEMENT FOR A MOTOR VEHICLE HAVING A HYDRAULIC FLUID CONDUIT FOR DELIVERING HYDRAULIC FLUID AT A CERTAIN PRESSURE TO SAID CLUTCH TO EFFECT OPERATION THEREOF COMPRISING, THROTTLE LINKAGE MEANS FOR VARYING THE THROTTLE SETTING OF SAID MOTOR VEHICLE, SAID VALVE MEANS CONNECTED TO SAID CONDUIT, SAID VALVE MEANS COMPRISING A VALVE SEAT EFFECTING FLUID COMMUNICATION BETWEEN THE CONNECTION OF SAID VALVE MEANS TO SAID CONDUIT AND A VENT LINE, SPOOL MEANS HAVING A VALVE HEAD THEREON SLIDABLY CARRIED IN SAID VALVE MEANS IN COOPERATION WITH SAID VALVE SEAT, SPRING MEANS BIASING SAID VALVE HEAD AGAINST SAID VALVE SEAT IN A DIRECTION OPPOSING ANY FLUID PRESSURE FROM SAID CONDUIT ON SAID VALVE HEAD, SPRING RETAINING MEANS OPERABLE TO VARY THE BIASING FORCE OF SAID SPRING MEANS, AND MEANS CARRIED ON SAID THROTTLE LINKAGE IN COOPERATION WITH SAID SPRING RETAINING MEANS FOR OPERATING SAID SPRING RETAINING MEANS TO VARY THE BIASING FORCE OF SAID SPRING MEANS DIRECTLY WITH SAID THROTTLE SETTING.
Claim 2
Dependent Claim
166 words
A VALVE MEANS FOR A CLUTCH CONTROL ARRANGEMENT FOR A MOTOR VEHICLE HAVING A HYDRAULIC FLUID CONDUIT FOR DELIVERING HYDRAULIC FLUID AT A CERTAIN PRESSURE TO SAID CLUTCH TO EFFECT OPERATION THEREOF COMPRISING, THROTTLE LINKAGE MEANS FOR VARYING THE THROTTLE SETTING OF SAID MOTOR VEHICLE, SAID VALVE MEANS CONNECTED TO SAID CONDUIT, SAID VALVE MEANS COMPRISING A VALVE SEAT EFFECTING FLUID COMMUNICATION BETWEEN THE CONNECTION OF SAID VALVE MEANS TO SAID CONDUIT AND A VENT LINE, SPOOL MEANS HAVING A VALVE HEAD THEREON SLIDABLY CARRIED IN SAID VALVE MEANS IN COOPERATION WITH SAID VALVE SEAT, SPRING MEANS BIASING SAID VALVE HEAD AGAINST SAID VALVE SEAT IN A DIRECTION OPPOSING ANY FLUID PRESSURE FROM SAID CONDUIT ON SAID VALVE HEAD, SPRING RETAINING MEANS OPERABLE TO VARY THE BIASING FORCE OF SAID SPRING MEANS, AND MEANS CARRIED ON SAID THROTTLE LINKAGE IN COOPERATION WITH SAID SPRING RETAINING MEANS FOR OPERATING SAID SPRING RETAINING MEANS TO VARY THE BIASING FORCE OF SAID SPRING MEANS DIRECTLY WITH SAID THROTTLE SETTING.
References Cited (Backward Citations)
US2733732A
Cited
US2633035A
Cited
US2707887A
Cited
US2887198A
Cited
US2809536A
Cited
US2832231A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |