Dispensing – Outlet element operated by pressure of contents – Spring form – resilient or compressible flow controller or...
Patent
1987-01-12
1987-10-13
Rolla, Joseph J.
Dispensing
Outlet element operated by pressure of contents
Spring form, resilient or compressible flow controller or...
222212, 222481, B65D 572
Patent
active
046993002
ABSTRACT:
A self-closing two-piece dispensing closure for dispensing product from squeeze-type containers, in which a rigid closure member (11) is adapted to be secured to a container neck, and a flexible diaphragm valving member (14) is snap-fitted to the rigid member for relative rotation therebetween. The members have complementally shaped, concentrically disposed posts (18, 33) nested together and defining a valve seat (20) and valve lip (34) which opens to dispense product when the container is squeezed and closes automatically when pressure on the container is released. In one form of the invention, the member (11) has at least one port (23) therethrough near the base of the post (18) and the member (14) has a corresponding seal pad (25) projecting therefrom toward the member (11) and adapted to close the port (23) in one relative rotational position of the members to block product from the diaphragm (24), whereby the container may be shipped with product therein without danger of leakage in the event pressure is exerted on the container. The seal pad ( 25) effects a secure seal when in the closed position, and the location of the port (23) and seal pad (25) near the base of the posts (18, 33), together with the arrangement of the seat (20) and valve lip (34) at the outer or upper ends of the posts, assures a short and direct product flow path from the container to the point of dispensing, with virtually no residue at the end of a dispensing cycle.
REFERENCES:
patent: 2556571 (1951-06-01), Bobbs et al.
patent: 3203603 (1965-08-01), Benson
patent: 3412910 (1968-11-01), Hahn
patent: 4141475 (1979-02-01), Nilson
patent: 4420101 (1983-12-01), O'Neill
patent: 4474314 (1984-10-01), Roggenburg, Jr.
patent: 4506809 (1985-03-01), Corsette
Huppert Michael S.
Lambert Dennis H.
Rolla Joseph J.
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