Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1982-02-04
1984-06-26
Herrmann, Allan D.
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74867, B60K 4110
Patent
active
044558929
ABSTRACT:
Hydraulic control means for an automatic transmission having an improved shift valve which reduce the speed change shock at the speed change. Said shift valve has a sleeve having an oil chamber in which throttle pressure is put and an oil chamber by which governor pressure or servo pressure is received, a spring installed withstands the throttle pressure and governor pressure or servo pressure, and a spool which installs an oil chamber wherein the above-mentioned governor pressure is put, opens(closes) an oil passage connecting to the above-mentioned friction elements when the pressure in this oil chamber is more than the appointed value, and closes or opens the oil passage when the pressure is less than the appointed value, said spool forming an oil chamber wherein the servo pressure or governor pressure supplied to an oil chamber of the above-mentioned sleeve is put when the governor pressure is less than the appointed value.
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Herrmann Allan D.
Rolnicki Joseph M.
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