Valve

Details Valve Valve

2007-02-20

2007-02-20

Rivell, John (Department: 3753)

Fluid handling

Line condition change responsive valves

Direct response valves

C137S516270

Reexamination Certificate

active

10859973

ABSTRACT:
A valve includes: a valve casing (1); a valve chamber (4) defined between a fluid inlet (2) and a fluid outlet (3) of the valve casing (1): and a plurality of check valve mechanisms (9) arranged in series within the valve chamber (4), the plurality of check valve mechanisms (9) each including: a valve seat (6) having a valve hole (5) formed therein: and a valve body (8) fixed to a valve shaft (7) and arranged on a fluid outlet (3) side of the valve seat (6), the valve shaft (7) passing through the valve hole (5) of the valve seat (6) and movably supported on a fluid inlet (2) side and the fluid outlet (3) side of the valve seat (6), the valve body (8) being adapted to move away from the valve seat (6) to open the valve hole (5) when applied with a fluid pressure from the fluid inlet (2) side and adapted to move toward and into contact the valve seat (6) to close the valve hole (5) when applied with a fluid pressure from the fluid outlet (3) side. As a result, a valve with a check valve mechanism capable of reliably preventing fluid backflow can be obtained.

REFERENCES:
patent: 156769 (1874-11-01), Cameron
patent: 173521 (1876-02-01), Warner
patent: 1022556 (1912-04-01), Johnson et al.
patent: 1147840 (1915-07-01), Bowser
patent: 1488604 (1924-04-01), Lawton
patent: 1785259 (1930-12-01), Hickerson
patent: 3029835 (1962-04-01), Biello et al.
patent: 3114382 (1963-12-01), Karshner
patent: 3344807 (1967-10-01), Lehrer et al.
patent: 3424427 (1969-01-01), Ruchser
patent: 3548868 (1970-12-01), Mullaney, III
patent: 3789297 (1974-01-01), Frolich
patent: 4049017 (1977-09-01), Jones
patent: 4637430 (1987-01-01), Scheffel et al.
patent: 4766930 (1988-08-01), Patti
patent: 4922957 (1990-05-01), Johnson
patent: 5193577 (1993-03-01), de Koning
patent: 5226445 (1993-07-01), Surjaatmadja
patent: 5546981 (1996-08-01), Li et al.
patent: 5597009 (1997-01-01), Scherrer et al.
patent: 2004/0238042 (2004-12-01), Takeda
patent: 7-101066 (1995-11-01), None
patent: 2001-349454 (2001-12-01), None

Affiliated with

Also associated with

Rating

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 Valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3839467