Dispensing – With discharge assistant – With biasing means for discharge assistant and/or its casing
Patent
1993-07-14
1994-08-30
Kashnikow:, Andres
Dispensing
With discharge assistant
With biasing means for discharge assistant and/or its casing
222383, 239333, B67D 500
Patent
active
053419650
ABSTRACT:
The trigger operated pumping mechanism for a fluid dispensing device comprises a body extending rearwardly from a discharge end of the fluid dispensing device toward a hand gripping formation of the fluid dispensing device. The body has a hollow cylinder therein extending to a rear wall. A piston is received in the cylinder. A trigger is movably mounted to the body, has a front side and a back side, and is coupled to the piston. A biasing mechanism for biasing the trigger away from the body to bias the piston coupled to the trigger out of the cylinder is positioned between the body and the trigger. The biasing mechanism includes non-metal, non-coiled, elongate spring structure having opposite ends, extending rearwardly from the trigger toward the hand gripping formation, having one end positioned adjacent to and acting against the trigger and having another end positioned rearwardly of the trigger adjacent the body at a location which is closer to the rear wall of the cylinder than to the trigger.
REFERENCES:
patent: 3768734 (1973-10-01), Anderson, Jr. et al.
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patent: 4191313 (1980-03-01), Blake et al.
patent: 4222501 (1980-09-01), Hammett et al.
patent: 4241853 (1980-12-01), Pauls et al.
patent: 4593607 (1986-06-01), Bennett
patent: 4624413 (1986-11-01), Corsette
patent: 4815663 (1989-03-01), Tada
patent: 4898307 (1990-02-01), Tiramani
patent: 4915263 (1990-04-01), Corba
patent: 5211315 (1993-05-01), Geier
Hurkmans Petrus L. W.
Maas Wilhelmus J. J.
AFA Products
Kashnikow: Andres
Pomrening Anthoula
Vigil Thomas R.
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