Operate check valve and hydraulic driving unit

Details Operate check valve and hydraulic driving unit Operate check valve and hydraulic driving unit

2007-08-14

2007-08-14

Lazo, Thomas E. (Department: 3745)

Power plants

Pressure fluid source and motor

Pump means moves motive fluid from one chamber to an...

C091S420000

Reexamination Certificate

active

11362377

ABSTRACT:
An operate check valve saves space and performs multiple functions by absorbing and integrating a switching valve. A switching valve for controlling the flow of a hydraulic fluid in both normal and reverse directions is coaxially contained with a check valve in a space inside a valve containing housing between a hydraulic pump and a tank for storing the hydraulic fluid. Check valves are located opposite one another on either side of the switching valve, with the switching valve integrated into the operate check valve.

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patent: 02-255005 (1990-10-01), None
patent: 2824659 (1998-11-01), None
patent: 2003-172307 (2003-06-01), None

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