Dispenser head for flowable materials

Details Dispenser head for flowable materials Dispenser head for flowable materials

1990-02-07

1991-11-19

Shaver, Kevin P.

Dispensing

Motor operated outlet element

222559, 222571, 141117, B67D 500

Patent

active

050659103

ABSTRACT:
A dispenser for flowable materials has a dispensing head with a chamber having inlet and discharge openings of a predetermined volume, a closure to open and close the inlet, a body which can be positioned in the chamber, for occupying a portion of its volume, a supply of flowable material to the inlet, and, the body being moveable so that at least a portion of the body is withdrawn from the chamber to increase the effective volume of the chamber and cause material in the discharge opening to be sucked back into the chamber.

REFERENCES:
patent: 2640630 (1953-06-01), Genco
patent: 2721008 (1955-10-01), Morgan, Jr.
patent: 2839226 (1958-06-01), Ross
patent: 3160331 (1964-12-01), Trumbull et al.
patent: 3351250 (1967-11-01), West
patent: 3459340 (1969-08-01), Smith
patent: 3557820 (1971-01-01), Jackson et al.
patent: 4516702 (1985-05-01), Schmidt
patent: 4809885 (1989-03-01), Hayashi et al.
patent: 4877160 (1989-10-01), Derving
patent: 4955514 (1990-09-01), Dickau

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