Electric-hydraulic power unit

Details Electric-hydraulic power unit Electric-hydraulic power unit

2008-07-15

2008-07-15

Tsay, Frank S (Department: 3676)

Wells

Valves, closures or changeable restrictors

Fluid operated

C166S068000, C166S264000

Reexamination Certificate

active

11857740

ABSTRACT:
The present invention is directed to an electric-hydraulic power unit. In one illustrative embodiment, the power unit comprises a body having a movable pressure barrier positioned therein, the movable pressure barrier defining first and second chambers therein, a configurable flow path in fluid communication with the first and second chambers, and at least one valve for configuring the flow path in a first state wherein fluid may flow within the flow path only in a direction from the first chamber toward the second chamber, and a second state wherein fluid within the flow path may flow in both directions between the first and second chambers.

REFERENCES:
patent: 3589838 (1971-06-01), Tuzson
patent: 3890786 (1975-06-01), Engle
patent: 4240463 (1980-12-01), Moore
patent: 4821761 (1989-04-01), Aid et al.
patent: 4920811 (1990-05-01), Hopper
patent: 5195721 (1993-03-01), Akkerman
patent: 5353870 (1994-10-01), Harris
patent: 5497672 (1996-03-01), Appleford et al.
patent: 5519295 (1996-05-01), Jatnieks
patent: 5984260 (1999-11-01), Rawson et al.
patent: 6017200 (2000-01-01), Childs et al.
patent: 6065355 (2000-05-01), Schultz
patent: 6182753 (2001-02-01), Schultz
patent: 6202753 (2001-03-01), Baugh
patent: 6250199 (2001-06-01), Schulte et al.
patent: 6269874 (2001-08-01), Rawson et al.
patent: 6595487 (2003-07-01), Johansen et al.
patent: 6659177 (2003-12-01), Bolze et al.
patent: 6702025 (2004-03-01), Meaders
patent: 2003/0230190 (2003-12-01), Douglas
patent: 0 984 133 (2000-03-01), None
patent: 1 209 294 (2001-05-01), None
patent: 1 241 322 (2002-09-01), None
patent: 2 216 570 (1989-10-01), None
patent: 309737 (1999-09-01), None
patent: WO 95/08715 (1995-03-01), None
patent: WO 01/12950 (2001-02-01), None
UK Examination Report Under Section 18(3), from application No. GB0617438.7, dated Sep. 3, 2007.

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