Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1981-10-02
1984-05-08
Herrmann, Allan D.
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74730, 74869, F16H 4700, B60K 4106, B60K 4108
Patent
active
044467591
ABSTRACT:
A control system for an automatic transmission having planetary gear elements that define several forward driving torque delivery paths that are established and disestablished upon engagement and release of friction clutches and brakes including a timing valve for controlling the timing of the ratio change from a high direct drive ratio to an intermediate underdrive ratio including a pair of friction clutches that are engageable to establish the high speed ratio torque delivery path and a reaction brake that is applied upon release of one of the friction clutches to establish an intermediate speed ratio torque delivery path, the timing valve being effective to delay application of the brake during the downshift interval thus effecting a smooth ratio transition.
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Ford Motor Company
Harrington Donald J.
Herrmann Allan D.
Wojciechowski Bruce F.
Zerschling Keith L.
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