Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1988-03-08
1990-02-13
Rivell, John
Fluid handling
Line condition change responsive valves
Direct response valves
137522, 220203, 220206, A47J 2708
Patent
active
048997820
ABSTRACT:
A steam pressure cooker (1) is described, which is provided with a lid (2) and a pressure relief valve (8), comprising a valve seat (7a), a valve body (9) adapted to have a load applied thereto in the direction of the valve seat (7a) by means of a spring (11) and an adjustable spring abutment (12), which is adapted to be displaced from an operative position in which the valve body (9) is pressed onto the valve seat (7a) to a steam-discharge position in which the valve body (9) is relieved of the load to such an extent that the steam can escape and which, for the purpose of cleaning, can be removed from the lid (2) to such an extent that the pressure relief valve (8) is freely accessible. In order to permit a better accessibility for the purpose of cleaning the pressure relief valve, without there being any necessity of disassembling the pressure relief valve and its support into their component parts, the spring abutment (12) is formed on a pivotable flap (14, 68) at which the valve body (9) is guided and supported and a control means (16, 40, 48, 56, 72, 75) is provided with the aid of which the flap (14, 68) can be pivoted from the operative position to the steam-discharge position as well as to the cleaning position and back.
REFERENCES:
patent: 2483297 (1949-09-01), Naylor
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patent: 2614724 (1952-10-01), Wyman
patent: 2649775 (1953-08-01), Welden
patent: 3949781 (1976-04-01), Scalabrin
patent: 3973694 (1976-08-01), Tess
patent: 4251007 (1981-02-01), Behnisch
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patent: 4560143 (1985-12-01), Robinson
patent: 4735190 (1988-04-01), Fischbach
Bolek Sonja
Krejza Jurgen
Roth Eberhard
Rivell John
WMF Wurttembergische Metallwarenfabrik AG
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