Pressure vessel interlock

Details Pressure vessel interlock Pressure vessel interlock

1987-11-24

1988-05-24

Hall, George T.

Receptacles

Closures

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

220314, B65D 4500

Patent

active

047460300

ABSTRACT:
A latching mechanism and pressure-operated safety lock for a pressure vessel such as a pressure frier, the invention comprises an interlock system which includes a safety lock and cooperating latching mechanism which prevents opening of the pressure vessel while potentially hazardous pressure levels exist within the vessel. The latching mechanism of the interlock system includes structure which facilitates the tightening of a lid of the pressure frier both before introduction of pressure into the vessel and during the existence of pressure conditions within the vessel. The lid is tightened over the pressure frier by means of a slotted sleeve disposed on the latching mechanism which cooperates with a pin of the safety lock to allow rotation of the latching mechanism to tighten the lid while maintaining positive engagement of the safety lock to prevent opening of the pressure vessel. The slotted sleeve of the invention acts in the manner of a ratchet in association with the pin to allow tightening of the lid or release of the lid as desired.

REFERENCES:
patent: 3976218 (1976-08-01), Stoermer et al.
patent: 4135640 (1979-01-01), MacQuilkin et al.
patent: 4325491 (1982-04-01), Barnhill
patent: 4485936 (1983-12-01), Pardo et al.

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