Dispensing – With lock or fastening seal – Plural
Patent
1987-12-15
1989-09-19
Shaver, Kevin P.
Dispensing
With lock or fastening seal
Plural
222207, 222383, 222384, B67D 540
Patent
active
048673471
ABSTRACT:
A dispenser pump comprises a pump chamber having a flexible wall for altering the volume of the chamber. The flexible wall is a polygonal pyramid, preferably five-sided, with facets interupted by respective cylindrical surface portions inclined to the facet so as to induce bending thereof when the wall is flexed on actuation of the pump, thereby producing a force tending to restore the flexible wall to its rest condition. An inoperative condition of the pump may be achieved by relative rotation of two body parts of the pump about the axis of a slidable telescopic guide connection between the flexible wall and a relatively fixed body part, a discharge nozzle of the pump being out of register with an outlet port of the pump in the inoperative condition. The flexible wall, an essentially rigid boundary portion thereof, an essentially rigid guide member that moves with it and the discharge nozzle may be formed together as a one-piece integral part of e.g. polypropylene.
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Law Brian
Wass Anthony
Shaver Kevin P.
The English Glass Company Limited
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