Receptacles – Closures – Superposed closures for common opening
Patent
1977-05-12
1978-10-31
Price, William
Receptacles
Closures
Superposed closures for common opening
220316, 220367, 220DIG20, B65D 4500, B65D 5118
Patent
active
041229690
ABSTRACT:
Disclosed is a safety closure apparatus for a pressure vessel, particularly for a vessel such as a pump stabilizer which has a gas compartment and a liquid compartment therein, both of which are normally pressurized. The apparatus includes a safety head configured to cover the closure means of the vessel to prevent its actuation; a liquid pressure bleed valve which must be removed before the safety hood can be moved off of the closure means, thereby insuring depressurization of the liquid compartment prior to opening; and gas pressure bleed means automatically operable upon movement of the safety hood off of the closure means, thereby also insuring depressurization of the gas compartment before access can be had to the closure means to actuate it to open the vessel.
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Cantrell Thomas L.
Price William
Schley Joseph H.
Shoap Allan N.
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