Fluid handling – Systems – Multi-way valve unit
Patent
1989-11-27
1991-01-01
Michalsky, Gerald A.
Fluid handling
Systems
Multi-way valve unit
91446, 13759613, F15B 1304
Patent
active
049811592
ABSTRACT:
A hydraulic control valve and sensing mechanism for controlling flow between a motor and a pump and container that includes a slide mounted in a housing bore for movement between a neutral position and two operative position. The slide has a central collar separated from end collars by slide grooves, profilings on diametric opposite sides of the slide grooves intersecting each groove. The housing bore has a pump groove supplied with pressure medium, axially opposite motor grooves connectable to motor conduits, and axially opposite the motor grooves from the pump grooves there are container grooves connectable to the container. The pressure sensing mechanism includes at least one pressure sensing orifice that is connected to the pressure to be sensed in an operative position of the slide but not being fluidly connected thereto when the slide is in its neutral position.
REFERENCES:
patent: 3828813 (1974-08-01), Haussler
patent: 4649951 (1987-03-01), Tardy
patent: 4736770 (1988-04-01), Rousset et al.
patent: 4782859 (1988-11-01), Constantinian
Christensen Thorkild
Thomsen Svend E.
Zenker Siegfried
Danfoss A/S
Easton Wayne B.
Johnson Clayton R.
Michalsky Gerald A.
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