Receptacles – Container attachment or adjunct – Pressure relief means
Patent
1990-01-09
1990-07-31
Pollard, Steven M.
Receptacles
Container attachment or adjunct
Pressure relief means
220326, 137382, B65D 2500
Patent
active
049444247
ABSTRACT:
The valved discharge opening of a cylinder containing pressurized fluid is protected by a safety cap assembly including a dome-shaped cap that is detachably secured to a collar which is in turn threadedly engaged with the existing threaded cap ring flange of the cylinder. The collar is provided with a pair of locking tabs which are spring-biased to extend outwardly through a pair of opposed circumferential slots formed in the collar for locking engagement through a pair of corresponding opposed circumferential slots formed in the cap. The cap and collar further include cooperating recesses for water drainage, an aperture formed in one locking tab to permit the attachment of a wire seal, and a passageway extending transversely through the sidewall of the collar for receiving a punch to deform the thread inwardly to lock the collar to the ring cap flange.
REFERENCES:
patent: 3372836 (1968-03-01), Smith
patent: 4332331 (1982-06-01), Fawley
patent: 4341436 (1982-07-01), Kanno et al.
patent: 4648526 (1987-03-01), Wood, Jr.
patent: 4651888 (1987-03-01), Wood, Jr.
patent: 4678003 (1987-07-01), Griffin
patent: 4880134 (1989-11-01), Wood, Jr.
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