Valves and valve actuation – Fluid actuated or retarded – Piston type expansible chamber reciprocating valve actuator
Reexamination Certificate
2008-01-29
2008-01-29
Huson, Gregory (Department: 3753)
Valves and valve actuation
Fluid actuated or retarded
Piston type expansible chamber reciprocating valve actuator
C251S118000
Reexamination Certificate
active
07322557
ABSTRACT:
A chemical liquid control valve is provided with a barrier on an outer circumferential end portion of a protruding part (an outer circumferential bottom portion of a valve seat). The barrier is placed so that an angle between the center line of an outlet passage and the line extending between the center of a valve port and each end of the barrier. The barrier is designed to have a height relative to a contact surface of the valve seat with a valve element is substantially half of the travel distance of a diaphragm valve element.
REFERENCES:
patent: 814402 (1906-03-01), Simpson
patent: 1471229 (1923-10-01), Williston
patent: 2727529 (1955-12-01), Gustav
patent: 2792015 (1957-05-01), Smith
patent: 4624444 (1986-11-01), Johnson
patent: 5964446 (1999-10-01), Walton et al.
patent: 6092782 (2000-07-01), Yamada et al.
patent: 6095193 (2000-08-01), Kanzaka et al.
patent: 6098623 (2000-08-01), Lindqvist
patent: 6289934 (2001-09-01), Welker
patent: 2002/0092571 (2002-07-01), Misumi
patent: 2003/0102032 (2003-06-01), Fukano et al.
patent: A 59-140967 (1984-08-01), None
patent: A 05-272648 (1993-10-01), None
patent: A 09-133252 (1997-05-01), None
patent: A 10-089494 (1998-04-01), None
patent: A 10-089528 (1998-04-01), None
patent: A 10-318423 (1998-12-01), None
patent: A 11-030355 (1999-02-01), None
patent: B2 2896747 (1999-03-01), None
patent: A 11-153235 (1999-06-01), None
patent: A 11-210927 (1999-08-01), None
patent: A 2002-213639 (2002-07-01), None
patent: A 2002-310316 (2002-10-01), None
patent: A 2004-019756 (2004-01-01), None
Nagao Toshiyuki
Osugi Shigeru
Tomita Hiroshi
CKD Corporation
Fristoe Jr. John K.
Huson Gregory
Oliff & Berridg,e PLC
LandOfFree
Chemical liquid control 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 Chemical liquid control valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chemical liquid control valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2785510