Check valve with dual locking mechanism

Details Check valve with dual locking mechanism Check valve with dual locking mechanism

1984-11-19

1986-04-08

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

137543, 137881, 251 83, F16K 1518

Patent

active

045805962

ABSTRACT:
A check valve includes a housing with an inlet, outlet, and a predetermined size cavity. A spherical valve element is supported on a slidable stem which is supported by a support shaped like the valve element with a spring interposed therebetween to urge the valve element into a closed condition. A locking mechanism enables locking of the valve element in a fully open, fully closed, or unlocked free floating condition. In another aspect, the valve included a bleeder conduit to the inlet side. The invention is also the valve in combination with a fire engine pumper.

REFERENCES:
patent: 569921 (1896-10-01), Hubbell
patent: 1483240 (1924-02-01), Olson
patent: 1545821 (1925-07-01), Eubanks
patent: 2170478 (1939-08-01), Long
patent: 2301276 (1942-11-01), Gussick
patent: 2641437 (1953-06-01), Jay
patent: 2688340 (1954-09-01), Stehlin
patent: 2856958 (1958-10-01), Smolensky
patent: 3408040 (1968-10-01), Kraft
patent: 3419040 (1968-12-01), Thibodeaux
patent: 3587632 (1971-06-01), Clay
patent: 3707987 (1973-01-01), Gordon
patent: 3983899 (1976-10-01), Graham
patent: 3987812 (1976-10-01), Nelson
patent: 4453569 (1984-06-01), Symmons

Affiliated with

Also associated with

Rating

Check valve with dual locking mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Check valve with dual locking mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Check valve with dual locking mechanism will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2060621