Dispensing – With lock or fastening seal – Plural
Patent
1981-10-16
1984-01-10
Scherbel, David A.
Dispensing
With lock or fastening seal
Plural
215313, 222499, 222521, 604110, B67B 500
Patent
active
044249187
ABSTRACT:
A non-resealable dispenser cap construction for a container, comprising a cap body part having a discharge opening, an orifice part movable between sealing and unsealing positions and adapted to selectively seal off the discharge opening, and means for preventing re-closing of the cap construction following an initial dispensing operation. There are provided cooperable camming surfaces on the cap body and orifice parts, which tend to hold the latter part in a sealing position, as during shipping. A one-way drive thread is provided, functioning when the orifice part is turned in an unscrewing direction, but being inoperable when the orifice part is thereafter turned in a screwing-on direction. Interference shoulders prevent the orifice part from returning to its sealing position, following an initial discharge. Once the orifice part is moved from its fully on or sealing position, it cannot normally be returned, thus there is prevented re-sealing of the container and possible subsequent risk or danger of pressure build-up therein.
REFERENCES:
patent: 2368836 (1945-02-01), Holwick
patent: 3259282 (1966-07-01), Jellesen
patent: 3263851 (1966-08-01), Grimsley
patent: 3370764 (1968-02-01), Stull
patent: 3420413 (1969-01-01), Corsette
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