Dispensing – Axially rotary and longitudinally movable tubes – sleeves – or... – Axial discharge
Patent
1986-07-14
1988-09-27
Rolla, Joseph J.
Dispensing
Axially rotary and longitudinally movable tubes, sleeves, or...
Axial discharge
222524, 222525, 222549, 222188, 222397, 220203, 220367, B67D 300
Patent
active
047735724
ABSTRACT:
A hand-held dispenser for a flowable product, comprising 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 said base and neck portions have cooperable automatic pressure-relief valving means 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, thereby to prevent possible explosion of the container and spillage or splattering of its contents. In one embodiment, 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 said first surface when the cap body is fully seated on the neck portion, A projection on one of the portions is disposed 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. The arrangement is such that under conditions of excess pressure, the seal between cap body and neck portion will automatically be momentarily broken or interrupted, thereby enabling limited venting to occur and avoiding the possibility of excessive pressure build-up in the container. Following the venting, the seal is automatically restored, whereby there is no possibility of contamination, leakage, etc.
REFERENCES:
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patent: 3194453 (1965-07-01), Cherba
patent: 3285479 (1966-11-01), Porter et al.
patent: 4424918 (1984-01-01), Stull
patent: 4625899 (1986-12-01), Stull
patent: 4646947 (1987-03-01), Stull
Bollinger David H.
Lehmann H. Gibner
Lehmann K. Gibner
Rolla Joseph J.
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