Fluid handling – Line condition change responsive valves – Pilot or servo controlled
Reexamination Certificate
2005-03-15
2005-03-15
Krishnamurthy, Ramesh (Department: 3753)
Fluid handling
Line condition change responsive valves
Pilot or servo controlled
C137S505140, C137S505410, C251S061000
Reexamination Certificate
active
06866061
ABSTRACT:
A back pressure valve, comprises: a first housing including a first chamber formed therein having an inlet and an outlet for a first fluid; a second housing including a second chamber formed; a flexible diaphragm having an outer peripheral edge portion abutting the second housing; and closing off the second chamber; a back pressure member moveably disposed in the first chamber of the first housing, wherein the first chamber is defined by the first housing and the back pressure member; wherein the flexible diaphragm is fixed onto and moveable together with the back pressure member, whereby pressure in the second chamber determines fluid pressure required to maintain the back pressure member in a steady position.
REFERENCES:
patent: 1557192 (1925-10-01), Brunning
patent: 2941543 (1960-06-01), Kleczek
patent: 3336843 (1967-08-01), Griswold
patent: 3529622 (1970-09-01), Weise et al.
patent: 3762436 (1973-10-01), Clayton
patent: 3767159 (1973-10-01), Treul
patent: 4190071 (1980-02-01), Dean et al.
patent: 5251148 (1993-10-01), Haines et al.
patent: 5381816 (1995-01-01), Alsobrooks et al.
patent: 5678601 (1997-10-01), Engel
patent: 5944050 (1999-08-01), Walker
patent: 6056008 (2000-05-01), Adams et al.
patent: 6305401 (2001-10-01), Uehara et al.
patent: 6418956 (2002-07-01), Bloom
patent: 0 805 294 (1997-11-01), None
patent: 09-088733 (1997-03-01), None
patent: 09-101826 (1997-04-01), None
patent: WO 0036482 (2000-06-01), None
patent: WO 0104718 (2001-01-01), None
Tescom Corporation Electronic Controls Division, ER3000 Electronig Pressure Controller, User Manual, 4 pages from manual.
Tescom Corporation, 2 sheets of print advertising.
Simpson Todd A.
Ye Jianming
Bereskin & Parr
Hydrogenics Corporation
Krishnamurthy Ramesh
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