Electrically controlled pressure relief valve and system and...

Data processing: generic control systems or specific application – Specific application – apparatus or process – Mechanical control system

Reexamination Certificate

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Details

C700S282000, C137S014000, C251S129010

Reexamination Certificate

active

07933688

ABSTRACT:
A system and method for controlling an electrically controlled pressure relief valve may use a soft position control loop to control the position of the valve. A pressure relief valve may also include a modified orifice shape to improve stability, to uniformly distribute the effective bandwidth over the valve operating range, and to provide a tunable default mode.

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patent: 6128541 (2000-10-01), Junk
patent: 6276458 (2001-08-01), Malone et al.
patent: 6732033 (2004-05-01), LaPlante et al.
patent: 6948461 (2005-09-01), Kotwicki
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patent: 2003/0160369 (2003-08-01), LaPlante et al.
patent: 2004/0039488 (2004-02-01), Junk et al.
Chinese Office Action with English language translation issued in corresponding Chinese Application No. 2005800446596, 6 pages.
Chinese Office Office Action dated Jan. 22, 2010 with English language translation issued in corresponding Chinese Application No. 200580044659.6, 7 pages.
Canadian Office Action dated Sep. 8, 2009 issued in corresponding Canadian Patent Application No. 2,586,137, 6 pages.
Chinese Office Action dated May 28, 2010 with English language translation issued in corresponding Chinese Application No. 200580044659.6, 7 pages.

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