Dispensing assembly with a variable-volume compression chamber a

Details Dispensing assembly with a variable-volume compression chamber a Dispensing assembly with a variable-volume compression chamber a

1994-10-17

1996-04-09

Kashnikow, Andres

Dispensing

Resilient wall

Supply container delivering to receiving chamber

222209, 222494, B65D 3700

Patent

active

055053416

ABSTRACT:
The dispensing assembly includes a container (8) holding the product, a dispensing head (20) having a dispensing channel (21), a flexible diaphragm (30) possessing a part in the form of a dome (32) which defines, in the dispensing head (20), a variable-volume compression chamber (50) in communication with the container (8); an inlet valve (133) is placed in this communication and allows the product to pass only from the container (1) to the compression chamber (50); the flexible diaphragm (30) is held against the dispensing head (20) by a fixing element consisting of a ring (40) possessing an opening (42) from which the compression dome (32) of the flexible diaphragm (30) emerges. The ring (40) bears an annular projection (41) surrounding the opening (42), the dispensing head (20) being provided with an annular groove (25) receiving an annular groove (34) which the flexible diaphragm (30) possesses and which surrounds the compression dome (32) of the flexible diaphragm (30), the annular projection (41) of the ring (40) being forcibly inserted into the annular groove (34) of the flexible diaphragm (30).

REFERENCES:
patent: 2884164 (1959-04-01), Kleid
patent: 2923441 (1960-02-01), McConnohie
patent: 3726442 (1973-04-01), Davidson et al.
patent: 3986644 (1976-10-01), Grogan et al.
patent: 4880161 (1989-11-01), Wright
patent: 5161718 (1992-11-01), Gueret
patent: 5271432 (1993-12-01), Gueret

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