Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1975-09-03
1977-07-05
Scott, Samuel
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
B60K 2100
Patent
active
040332039
ABSTRACT:
A hydraulic control system for a vehicle transmission including a plurality of hydraulically operated functional brake and clutch devices for providing a plurality of driving stages of different speed ratios, the system comprising a pressure regulator valve for providing a regulated line pressure and shift valves for transmitting the line pressure to selected ones of the frictional devices. Pressure control valves are provided between the shift valves and the brake or clutch devices which are operated in low speed range of the transmission to provide a time delay in the increase of the pressure for actuating the devices. The pressure regulator valve is provided with pressure increasing chambers which receive the outlet pressure from the pressure control valves to increase the line pressure when the transmission is shifted to the low speed range such as the first and second speed forward drive stage and the reverse drive stage.
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patent: 3369430 (1968-02-01), Haley
patent: 3525275 (1970-08-01), Lemieux
patent: 3546973 (1970-12-01), Ohie et al.
patent: 3683721 (1972-08-01), Uozumi et al.
patent: 3688608 (1972-09-01), Leach
patent: 3881372 (1975-05-01), Miyauchi
Hirosawa Koichiro
Ishikawa Kazuo
Murakami Noboru
Ogasawara Tsunehiko
Aisin Seiki Kabushiki Kaisha
Chandler Lance W.
Scott Samuel
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