Cartridge piston with integrally molded sealing plug

Details Cartridge piston with integrally molded sealing plug Cartridge piston with integrally molded sealing plug

1981-07-22

1983-09-06

Rolla, Joseph J.

Dispensing

With recorder, register, indicator, signal or exhibitor

Position or extent of motion indicator

222481, 222386, B67D 522

Patent

active

044024274

ABSTRACT:
A dispensing cartridge or other similar container having a piston-type closure at one end and an apertured dispensing wall at its other end which may be covered by a cover or cap. The piston-type closure is a rigid structure which includes a sealing ring to engage the container sidewall, a centrally-located filling aperture and a integrally-molded, detachable plug that is aligned to the aperture and adapted to be forced into the aperture to close and seal the container after filling. The plug is attached to the piston closure by several frangible elements and the container is filled via the gaps formed between these elements.

REFERENCES:
patent: Re26012 (1966-05-01), Green
patent: 2085446 (1937-06-01), Philippe
patent: 2371332 (1945-03-01), Jacobson
patent: 2900850 (1980-07-01), Bastian
patent: 2952278 (1960-09-01), Waldherr
patent: 3057647 (1962-10-01), Wood
patent: 3664508 (1972-05-01), Linder
patent: 4167245 (1979-09-01), Kock et al.
patent: 4231486 (1980-11-01), Bock

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