Absolute-control numerical hydraulic actuating device

Details Absolute-control numerical hydraulic actuating device Absolute-control numerical hydraulic actuating device

1979-10-01

1982-01-19

Maslousky, Paul E.

Motors: expansible chamber type

Fluid supply through diverse paths to single expansible chamber

Diverse paths used to control extent of working member travel

91 20, 91390, 91417R, 91445, F15B 1517, F01B 2502

Patent

active

043110835

ABSTRACT:
An absolute-control numerical hydraulic actuating device with display of the output position, comprising a hydraulic jack, a distributor formed with orifices and a selector connected to the orifices in order to make the required hydraulic connections for hydraulic locking in the desired output position.
According to the invention, the orifices of the distributor can be selectively connected by the selector to the active chamber of the jack in order hydraulically to lock the output positions in accordance with numerical orders supplied to the selector, and additional intermediate locking positions are created by the provision of additional rows of orifices which can be selectively connected to the high-pressure source, to the low-pressure source, or to the active chamber of the jack through a further selector.

REFERENCES:
patent: 3732027 (1973-05-01), Lupke et al.
patent: 4014248 (1977-03-01), Cyrot
patent: 4114513 (1978-09-01), Debrus

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