Pump chamber dispenser

Details Pump chamber dispenser Pump chamber dispenser

1988-10-31

1990-01-09

Shaver, Kevin P.

Dispensing

Resilient wall

Supply container delivering to receiving chamber

222383, B67D 542, G01F 1100

Patent

active

048922315

ABSTRACT:
A pump chamber dispenser for toothpaste or other viscous or pasty product comprises a pump member (54) moulded form elastomeric material and having a domed central portion (56) and a bifurcated peripheral portion providing inner and outer skirts arranged to lie against respective surfaces of a projection (36) formed on the end wall (18) of the dispenser body (10), and to serve as inlet and exit valves controlling an inlet port (20) communicating the pump chamber (21) with the reservoir chamber (22), and an exit port communicating the pump chamber with a discharge nozzle (58). The nozzle is integral with a cover fixed to the body (10) and enclosing the pump member, the cover including a button (70) for acting on the pump member to operate the dispenser.

REFERENCES:
patent: 3752366 (1973-08-01), Lawrence, Jr.
patent: 3753518 (1973-08-01), Kutik
patent: 3785532 (1974-01-01), Cooprider
patent: 3987938 (1976-10-01), Cooprider et al.
patent: 4564130 (1986-01-01), Eulenburg
patent: 4565306 (1986-01-01), Nakanishi et al.
patent: 4657161 (1987-04-01), Endo et al.
patent: 4830229 (1989-05-01), Ball

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