Dispensing – Collapsible wall-type container – With wall-collapsing means
Patent
1990-06-12
1992-05-26
Hajec, Donald T.
Dispensing
Collapsible wall-type container
With wall-collapsing means
222 93, 222132, 222135, 2224005, 222401, 222389, 222181, B65D 3554, B65D 8300
Patent
active
051159457
ABSTRACT:
A viscous material dispenser (for liquid soap and the like) comprises a piston in fluid communication with an air chamber. Depressing the piston increases the pressure in the air chamber and this pressurized air is conducted through a duct to a reservoir. Depressing the piston also opens a nozzle leading from the bottom of the reservoir. In one embodiment the duct terminates in a portion which turns back on the remainder of the duct which portion incorporates a one-way non-return valve so that the pressure in the reservoir may be built up with consecutive strokes of the piston due to the non-return valve. When air is pumped through the duct, a bubble of air is trapped between the valve and the mouth of the duct which prevents fouling of the valve by the viscous material. In another embodiment, the reservoir may contain a sac of a viscous material; in this embodiment a one-way valve to admit air to the air chamber may be locked closed during a portion of the return stroke of the piston to suck viscous material at the basal dispensing opening of the unit back into the unit thereby preventing drips.
REFERENCES:
patent: 316594 (1885-04-01), Adami
patent: 2103687 (1937-12-01), McKenney
patent: 2327285 (1943-08-01), Opitz
patent: 2718335 (1955-09-01), Shippen
patent: 3078016 (1963-02-01), Judy
patent: 3130873 (1964-04-01), Klutz
patent: 3204823 (1965-09-01), Watson, Jr.
patent: 3349967 (1967-10-01), Schneller
patent: 3539081 (1970-11-01), Norton
patent: 3990611 (1976-11-01), Sojka
patent: 4105140 (1978-08-01), Roth
patent: 4142651 (1979-03-01), Leopoldi et al.
patent: 4147278 (1979-04-01), Uhlig
patent: 4159790 (1979-07-01), Bailey
patent: 4463876 (1984-08-01), Swallert
patent: 4535918 (1985-08-01), Heiligman et al.
Bomberg Kenneth
Hajec Donald T.
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