Receptacles – Closures – Having means for securing or retaining closure in its closed...
Patent
1988-04-29
1989-06-20
Foster, Jimmy G.
Receptacles
Closures
Having means for securing or retaining closure in its closed...
99403, 126369, 220324, 292 58, B65D 4500, F24D 100
Patent
active
048402877
ABSTRACT:
A simple to operate locking mechanism for a pressure cooker, the locking mechanism having a locking arm rotatable from a fully open to a fully locked position, the locking arm being operatively connected to a cam shaft assembly which is rotatable with the locking arm, the cam shaft assembly being slidably axially in a cam shaft sleeve rotatably mounted in a displacement member which causes the cam shaft assembly to be axially displaced as it is rotated by the locking arm, the cam shaft assembly being moveable from a retracted to an extended position as the locking arm moves from a fully open to an intermediate position. A safety mechanism is provided to prevent rotation of the locking arm from the intermediate to the fully locked position in the event the cam shaft assembly is not fully extended. A pressure responsive safety mechanism is also provided to prevent opening movement of the locking mechanism in the event the cooker is under pressure.
REFERENCES:
patent: 1858013 (1932-05-01), Heins
patent: 2917200 (1959-12-01), Phelan et al.
patent: 3314416 (1967-04-01), Wagner
patent: 3976218 (1976-08-01), Stoermer
patent: 4159063 (1979-06-01), Weber et al.
patent: 4362148 (1982-12-01), Luebke et al.
patent: 4467936 (1984-08-01), Makhijani
patent: 4485936 (1984-12-01), Pardo et al.
patent: 4721094 (1988-01-01), Nett
Brewer Edward L.
Clark John M.
Foster Jimmy G.
Henny Penny Corporation
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