Hydraulic circuit and method for operating a gripping device

Details Hydraulic circuit and method for operating a gripping device Hydraulic circuit and method for operating a gripping device

2006-12-19

2006-12-19

Bates, Zakiya W. (Department: 3676)

Wells

Processes

Placing or shifting well part

C166S077300

Reexamination Certificate

active

07150330

ABSTRACT:
A hydraulic circuit and method for operating a gripping mechanism according to which fluid is passed from a source to the device while some of the fluid is passed to a valve that is adjustable to control the amount of fluid passed to it and therefore the amount of fluid passed to the device.

REFERENCES:
patent: 4534168 (1985-08-01), Brantly
patent: 6173769 (2001-01-01), Goode
patent: 6216780 (2001-04-01), Goode et al.
patent: 6367557 (2002-04-01), Rosine et al.
patent: 7032499 (2006-04-01), Domann
patent: 2003/0209346 (2003-11-01), Austbo et al.
Patent Application entitled “Apparatus and Method for Injecting Tubing in a Well Bore” by Robert E. Domann et al., filed concurrently herewith.

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