Pump dispenser

Details Pump dispenser Pump dispenser

1997-07-29

1998-11-24

Derakshani, Philippe

Dispensing

With discharge assistant

With movable nozzle interconnected therewith

G01F 1104

Patent

active

058396179

ABSTRACT:
Lotion pump has a stepped piston telescoping inside a stepped body to define a pumping chamber. The piston has in the wall of the piston inlet and discharge apertures, one above the other, to the pumping chamber. A stem integral with the actuator spout has a sealing head inside the piston which shuttles back and forth between positions at which it covers one aperture or the other. Shuttling is implemented by lost-motion between the actuator spout/stem and piston. A spring urges the stem up at all times.

REFERENCES:
patent: 3248022 (1966-04-01), Schulman et al.
patent: 3627206 (1971-12-01), Borris
patent: 4503997 (1985-03-01), Corsette
patent: 4923094 (1990-05-01), O'Neill
patent: 5156304 (1992-10-01), Battegazzore
patent: 5163588 (1992-11-01), Cater
patent: 5261573 (1993-11-01), Jouillat et al.
patent: 5284276 (1994-02-01), Cater
patent: 5348189 (1994-09-01), Cater
patent: 5423459 (1995-06-01), Cater
patent: 5458289 (1995-10-01), Cater

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