Valves

Details Valves Valves

1997-12-22

1999-11-23

Chambers, A. Michael

Valves and valve actuation

Valve actuator is valve casing or extension thereof

Jointed or flexible wall

222490, 137243, F16K 1100

Patent

active

059885920

ABSTRACT:
A valve in which an elastic member (26) containing a normally closed slit (28) is adapted to be selectively stretched by displacement of an actuating means, such as to stretch open the slit (28) over the outlet end (27) of a product discharge passage defined by a tube (24) and allow fluid product to be dispensed therefrom, release of the actuating means allowing the elastic member, and hence the distorted slit (28) to return to its original configuration, thereby reclosing the outlet end of the passage. The actuating means comprises a pair of relatively pivotable actuating members (30a, 30b) relative angular displacement of which is adapted to stretch open the slit (28) in the elastic member (26) over said outlet end (27) of the product discharge passage defined by the rigid tube (24).

REFERENCES:
patent: 2578864 (1951-12-01), Tupper
patent: 2730274 (1956-01-01), Brown
patent: 2759210 (1956-08-01), Cordis
patent: 3858773 (1975-01-01), Del Bon
patent: 4473094 (1984-09-01), Harris
patent: 4725268 (1988-02-01), Ostensen et al.

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