Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1975-10-07
1978-01-03
Coan, James F.
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
B60K 4118
Patent
active
040659852
ABSTRACT:
An oil pressure control system for an automatic transmission system which includes a fluid torque converter, a transmission gear and friction engaging means adapted to be selectively supplied with line pressure for establishing a selected transmission engagement in said transmission gear, wherein speed shift valves which change over the supply of said line pressure to said friction engaging means are selectively supplied with a detent pressure generated by properly reducing said line pressure. The detent pressure acts to forcibly shift said speed shift valves toward a shift position for establishing a lower speed range in a manner that a speed shift point is biased to a higher speed range by an amount determined by the level of said detent pressure.
REFERENCES:
patent: 3091980 (1963-06-01), Black
patent: 3710652 (1973-01-01), Miyazaki
patent: 3724292 (1973-04-01), Borman
patent: 3831465 (1974-08-01), Murakami
patent: 3951011 (1976-04-01), Lemon
Coan James F.
Toyota Jidosha Kogyo Kabushiki Kaisha
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