Refillable dispensing device having wiper seal

Dispensing – With cutter and/or punch – To form dispensing opening in container

Patent

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Details

222387, 222327, B65D 1724

Patent

active

042238080

ABSTRACT:
A readily refillable dispensing device for dispensing liquids and other fluids without a use of gaseous propellants includes an outer casing having an aerosol valve assembly, a refill assembly which is received within the outer case and an end cap. The refill assembly includes a rigid cylindrical sleeve, a piston slidably received within the cylindrical sleeve, a rubber wiper seal, and a coil spring for biasing the piston towards an upper portion of the refill assembly. The piston includes at least one depending lock hook which releasably engages a lower sleeve closure of the cylindrical sleeve. The piston is released from the lower sleeve closure by threading the bottom cap onto the outer case. A cam of the bottom cap urges the at least one depending lock hook out of engagement with the lower sleeve closure. The wiper seal is preferably made of a resilient material such as rubber or neoprene and effectively seals an interior chamber of the refill assembly.

REFERENCES:
patent: 2506833 (1950-05-01), Hunter
patent: 2625302 (1953-01-01), Mahoney
patent: 2758758 (1956-08-01), Schimpf
patent: 3250442 (1966-05-01), Bell et al.
patent: 3847304 (1974-11-01), Cohen

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