Piston actuator incorporating partitioned pressure chambers

Details Piston actuator incorporating partitioned pressure chambers Piston actuator incorporating partitioned pressure chambers

2005-03-08

2005-03-08

Hirsch, Paul J. (Department: 3754)

Valves and valve actuation

Reciprocating valve

Piston

C251S310000

Reexamination Certificate

active

06863260

ABSTRACT:
A multi-chambered piston actuator incorporates partitioned pressure chambers, each chamber delivering an actuation force to a common target object based on multiple presence signals and/or resources. The chambers are formed in part by one or more tiers, each tier having a surface area on which one or more pressure signals act. The resultant force on the tiers move the common target to control, for example, a valve.

REFERENCES:
patent: 4084486 (1978-04-01), Juvonen
patent: 4491155 (1985-01-01), Meyer et al.
patent: 4543935 (1985-10-01), Tuckey
patent: 5305788 (1994-04-01), Mayeux
patent: 5375994 (1994-12-01), Friderich et al.
patent: 5971296 (1999-10-01), Fukano et al.
patent: 6386508 (2002-05-01), Steil et al.
patent: 6394417 (2002-05-01), Browne et al.

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