Pump dispenser having one-piece spring and gasket

Details Pump dispenser having one-piece spring and gasket Pump dispenser having one-piece spring and gasket

1999-04-23

2000-09-26

Shaver, Kevin

Dispensing

With discharge assistant

With biasing means for discharge assistant and/or its casing

2223831, G01F 1142, B67D 540

Patent

active

06123236&

ABSTRACT:
A container-mounted pump dispenser having a body with a vertical cylinder and piston is provided with a one-piece spring/gasket. The spring/gasket is a resilient bowl-shaped spring attached at its lower end about the piston stem and at its upper end comprises an annular gasket to be squeezed between the dispenser mounting cap and the container finish.

REFERENCES:
patent: 180036 (1876-07-01), Jones
patent: 3995776 (1976-12-01), Micallef
patent: 4138039 (1979-02-01), Micallef
patent: 4161288 (1979-07-01), McKinney
patent: 4227650 (1980-10-01), McKinney
patent: 4336895 (1982-06-01), Aleff
patent: 4452379 (1984-06-01), Bundschuh
patent: 4589573 (1986-05-01), Tada
patent: 4640444 (1987-02-01), Bundschuh
patent: 5114052 (1992-05-01), Tiramani et al.
patent: 5518377 (1996-05-01), Bougamont et al.
patent: 5664703 (1997-09-01), Reifenberger et al.
patent: 5687884 (1997-11-01), Bodin et al.

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