Spring-loaded pressure relief valve, particularly for...

Details Spring-loaded pressure relief valve, particularly for... Spring-loaded pressure relief valve, particularly for...

2006-07-18

2006-07-18

Krishnamurthy, Ramesh (Department: 3753)

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

C137S512000, C137S614200, C137S329300, C137S329400

Reexamination Certificate

active

07077157

ABSTRACT:
A spring-loaded pressure relief valve, particularly for containers of pressurized fluids, comprising a valve body that is associable with a container and forms a discharge port that is controlled by a main piston; an auxiliary valve is further provided, which controls a venting port and drives the intervention of the main piston, such main piston being accommodated in a cavity that is formed in the valve body and is open in an axial direction on the opposite side with respect to the venting port.

REFERENCES:
patent: 2664102 (1953-12-01), Coberly
patent: 2713874 (1955-07-01), Sundstrom
patent: 2882922 (1959-04-01), Schindel
patent: 2989072 (1961-06-01), Banker
patent: 3595263 (1971-07-01), Greenlaw
patent: 3987814 (1976-10-01), Hall
patent: 6105608 (2000-08-01), Katzman
patent: 6644346 (2003-11-01), Conrads et al.
patent: 11 78 656 (1964-09-01), None
patent: 36 39 327 (1988-06-01), None
patent: 0 717 821 (1996-06-01), None
patent: 2 109 652 (1972-05-01), None
patent: 2 671 156 (1992-07-01), None

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