Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1980-10-23
1983-12-20
Braun, Leslie A.
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74752C, 74869, 192 362, B60K 4104
Patent
active
044209940
ABSTRACT:
The hydraulic regulating device for an automatic transmission having a selector valve for selecting a plurality of gear stages, includes a high pressure conduit, a working pressure conduit and a shift pressure conduit, a plurality of coupling elements assigned to respective gears, a single, pressure regulating valve electromagnetically controlled by a control signal to build up or decrease pressure in the shift pressure conduit, holding valves connected between the working pressure conduit and the shift pressure conduit, and shift control valves connected to the shift pressure conduit and cooperating with the holding valves to connect, in response to an increased gear, the coupling elements pertaining to the higher gear in a preselected gear stage, to the shift pressure conduit and, upon completion of the gear shift operation, to connect via the working pressure conduit the coupling elements to the high pressure conduit with the exception of the last actuated coupling element who remains connected to the shift pressure conduit.
REFERENCES:
patent: 3968707 (1976-07-01), Dach
patent: 4023447 (1977-05-01), Sakai et al.
patent: 4253553 (1981-03-01), Yamada et al.
patent: 4314488 (1982-02-01), Lauven
Muller Alfred
Sauer Joseph
Braun Leslie A.
McKenzie, Jr. Frank H.
Robert & Bosch GmbH
Striker Michael J.
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