Continuous spray pump dispenser

Details Continuous spray pump dispenser Continuous spray pump dispenser

1994-07-25

1995-06-13

Huson, Gregory L.

Dispensing

With discharge assistant

With movable nozzle interconnected therewith

222341, 239333, B65D 8854

Patent

active

054234590

ABSTRACT:
A vertical hollow cylinder has a recess adjacent an upper end and a lower end constituting a throat. A vertical hollow outer piston is slidable in the cylinder with upper section extending above the cylinder and a lower section disposed within the cylinder. The lower section has first and second vertically spaced horizontal extensions disposed in slidable sealing engagement with the cylinder wall and has a third extension in slidable sealing engagement with the throat. The outer piston also has first and second vertically spaced channels extending from the second inner wall into the interior of the cylinder which are disposed respectively above the first extension and below the second extension. A lower variable volume is defined by a portion of the cylinder wall subtended between the second and third extensions and communicates with the second channel. A member is disposed within the recess, in sealing engagement with the upper section of the outer piston and cylinder wall. An upper variable volume is defined by another portion of the cylinder wall subtended between the member and the first extension and communicates with the first channel. A hollow vertical actuator is slidable in the outer piston and defines a discharge channel. A vertical hollow inner piston engages the interior of the actuator and has between its ends upper and lower vertically spaced skirts in slidable sealing engagement with the wall of the outer piston. The inner piston has a third channel which extends to the discharge orifice. second channel communicates only with the third channel.

REFERENCES:
patent: 3967762 (1976-07-01), Machon
patent: 4079865 (1978-03-01), Kutik
patent: 4191313 (1980-03-01), Blake et al.
patent: 4241853 (1980-12-01), Pauls et al.
patent: 4325501 (1982-04-01), Shay
patent: 4503996 (1985-03-01), Sorm et al.
patent: 4646969 (1987-03-01), Sorm et al.
patent: 5092495 (1992-03-01), Andre

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