Power transmission control system

Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position

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Details

192 8718, 192 4C, 192 8719, F16D 1900, F16D 2108, F16D 2500

Patent

active

047546662

ABSTRACT:
A power transmission control system includes a single selector valve for setting three speed ratios and neutral position disposed between a fluid pressure source and three selectively engageable fluid pressure operated clutches for obtaining three speed ratios. The selector valve prevents fluid communication between the fluid pressure source and each three clutches and permits draining of the fluid pressure within each of the three clutches when in the neutral condition thereof. The selector valve permits the communication between the fluid pressure source and a selected clutch corresponding to the driving speed ratio selected thereby and prevents the communication between the fluid pressure and the non-selected clutches and permits draining of the fluid pressure from the non-selected clutches when in the one selected position.

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patent: 4452101 (1984-06-01), Fujioka
patent: 4502577 (1985-03-01), Nakamichi
patent: 4646895 (1987-03-01), Horsch

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