Valves and valve actuation – Fluid actuated or retarded – Fluid and non-fluid actuators
Reexamination Certificate
2005-08-23
2005-08-23
Chambers, A. Michael (Department: 3753)
Valves and valve actuation
Fluid actuated or retarded
Fluid and non-fluid actuators
C137S269000, C251S063400, C251S063500, C251S291000
Reexamination Certificate
active
06932315
ABSTRACT:
An apparatus for manually opening a normally-closed valve includes a value and a hand-operated valve opening jig. The valve includes a working rod for operating a valve element which is moved to close and open a conduit; a cylindrical holder fixed to the working rod, and to which the hand-operated valve opening jig can be detachably attached from the outside of the housing; a biasing member which biases the working rod to close the conduit; and a pressure chamber which is supplied with a working fluid to move the working rod to make the valve element open the conduit. The hand-operated valve opening jig includes a manual-opening attachment which can be detachably attached to the cylindrical holder; and an operational member which is operated to move the working rod in a direction to make the valve element open the conduit via said manual-opening attachment.
REFERENCES:
patent: 2710627 (1955-06-01), Wagner et al.
patent: 3451423 (1969-06-01), Priese
patent: 3737140 (1973-06-01), Toth
patent: 4121615 (1978-10-01), Bergeron
patent: 4213480 (1980-07-01), Orum et al.
patent: RE31845 (1985-03-01), Peters
patent: 4660600 (1987-04-01), Bergeron
patent: 5516075 (1996-05-01), Itoi et al.
patent: 6015134 (2000-01-01), Johnson
patent: 0 882 921 (1998-12-01), None
patent: 0 962 686 (1999-12-01), None
patent: 2203482 (1974-05-01), None
patent: 1010721 (1965-11-01), None
patent: 11 051239 (1999-02-01), None
patent: 11-82804 (1999-03-01), None
patent: WO 98 54495 (1998-12-01), None
Chambers A. Michael
Fujikura Rubber Ltd.
McCormick Paulding & Huber LLP
Neriki Valve Co., Ltd.
LandOfFree
Manual opening apparatus for a normally-closed valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Manual opening apparatus for a normally-closed valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Manual opening apparatus for a normally-closed valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3520041