Dispensing – Axially rotary and longitudinally movable tubes – sleeves – or... – Axial discharge
Patent
1985-02-07
1986-12-02
Rolla, Joseph J.
Dispensing
Axially rotary and longitudinally movable tubes, sleeves, or...
Axial discharge
222549, 222552, 137859, 220203, 220367, B67D 300
Patent
active
046258990
ABSTRACT:
A hand-held dispenser for a flowable product, including a container having a neck portion at its top, and a cap body having a discharge opening and a base portion cooperable with the neck portion of the container to mount the cap body thereon. The base and neck portions have cooperable automatic pressure-relief valving structures which are responsive to increased gas pressure in the container, for venting a limited quantity of gas when the container is in its upright position, so as to prevent possible explosion of the container and spillage or splattering of its contents. In one form, there is a first annular sealing surface on one portion and a cooperable annular sealing surface on a companion portion which is engageable with the first surface when the cap body is fully seated on the neck portion. A projection on one of the portions is located adjacent the sealing surface thereof, and is engageable with the cooperable sealing surface on the other of the portions. The projection is capable of effecting a non-destructive deformation of at least one of the portions when the cap body is moved axially from the fully seated position on the neck portion. Under conditions of excess pressure, the seal between cap body and neck portion will automatically be momentarily broken or to permit venting and avoiding pressure build-up in the container. Following the venting, seal is automatically restored.
REFERENCES:
patent: 2423295 (1947-07-01), Crabbe et al.
patent: 2424801 (1947-07-01), Crabbe et al.
patent: 2816682 (1957-12-01), Brucker
patent: 3194453 (1965-07-01), Cherba
patent: 3285479 (1966-11-01), Porter et al.
patent: 4007848 (1976-02-01), Snyder
patent: 4424918 (1984-01-01), Stull
Bollinger David H.
Lehmann H. Gibner
Lehmann K. Gibner
Rolla Joseph J.
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