Pushbutton valve for dispensing a liquid in spray form, and pres

Details Pushbutton valve for dispensing a liquid in spray form, and pres Pushbutton valve for dispensing a liquid in spray form, and pres

1994-12-07

1996-12-03

Kaufman, Joseph

Dispensing

Collapsible wall-type container

With casing or support

2221452, 2221455, 222148, 22240218, 22240224, B65D 3556

Patent

active

055799558

ABSTRACT:
Pushbutton valve for dispensing, in the form of a spray, a liquid contained in a flexible pocket (2) which is located inside a container under pressure from a gas including a valve body (9) intended to be fixed into a dished part with the interposition of a sealing washer (13) between an open front end of the valve body and the dished part. A control stem (14) is able to slide between a position of rest and an open position. The valve body forms a chamber (C) which is isolated from the outside when the stem is at rest. The stem is held in this position of rest by a return spring. An additional gas inlet orifice (31) is provided in the lateral wall of the valve body, valve elements place the flexible pocket in communication with the chamber (C) when the stem (14) is pushed in, and isolate the pocket (2) from the chamber (C) when the valve is in the state of rest. These valve elements are controlled by the movement of the stem, and are able to establish the communication between the pocket (2) and the chamber (C) only after the control stem (14) has travelled a given distance (D).

REFERENCES:
patent: 3283962 (1966-11-01), Whitmore
patent: 3503539 (1970-03-01), O'Donnell
patent: 3575320 (1971-04-01), Prussin et al.
patent: 3583606 (1971-06-01), Ewald
patent: 3674180 (1972-07-01), Morane
patent: 3690515 (1972-09-01), Ewald
patent: 3710984 (1973-01-01), Webster
patent: 3749291 (1973-07-01), Prussin et al.
patent: 4030644 (1977-06-01), Creighton
patent: 4431119 (1984-02-01), Stoody
patent: 4673107 (1987-06-01), Obrist
patent: 4875605 (1989-10-01), Weston

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