Safety apparatus for a pressure cooker

Details Safety apparatus for a pressure cooker Safety apparatus for a pressure cooker

1975-08-11

1976-08-24

Price, William

Receptacles

Closures

Having means for securing or retaining closure in its closed...

99403, B65D 4500, A47J 3712

Patent

active

039762181

ABSTRACT:
A pressure cooker has a receptacle and a lid having a gasket around its perimeter for engagement with the upper edge of the receptacle. A bar extends across the lid and is connected to the receptacle. A spindle is threaded in the bar and engages the lid to force the lid gasket against the receptacle to seal the pressure cooker. The lid has a flexible inner liner which functions in part as a diaphragm to operate an interlock to block the rotation of the spindle when the pressure within the receptacle exceeds a predetermined value. The spindle also has a cooperating safety nut which is normally non-functional but in the event of the wearing of the operational threads associated with the spindle will warn the operator of that condition and in the event of the stripping of the operational threads will prevent the lid from opening more than a very small amount.

REFERENCES:
patent: 1659202 (1928-02-01), Jewell
patent: 1858013 (1932-05-01), Heins
patent: 2629514 (1953-02-01), Savolainen

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