Low profile and low force actuation dispensing pump

Details Low profile and low force actuation dispensing pump Low profile and low force actuation dispensing pump

1998-06-16

2000-03-14

Kaufman, Joseph A.

Dispensing

With discharge assistant

With movable nozzle interconnected therewith

222341, 222385, G01F 1128, B65D 8854, B67D 540

Patent

active

060360593

ABSTRACT:
A smooth actuating, non-throttling dispensing pump with a low force to actuate is provided. The pump will dispense a fluid at a pressure and flow velocity sufficient to allow the fluid to exit through the actuator in a fine particle spray. This action occurs when the actuator, depressed by the finger, moves a displacement piston downward pressurizing the fluid in the fluid chamber. When a predetermined pressure is reached, seals between the piston and stem open permitting the pressurized fluid to exit the fluid chamber through the actuator. The relationship of the frictional and spring forces plus the pressure acting on the piston and stem determines when and how the fluid is dispensed.

REFERENCES:
patent: 3627206 (1971-12-01), Boris
patent: 3774849 (1973-11-01), Boris
patent: 3796375 (1974-03-01), Boris
patent: 4017031 (1977-04-01), Kishi et al.
patent: 4082222 (1978-04-01), Boris
patent: 4174052 (1979-11-01), Capra et al.
patent: 4228931 (1980-10-01), Ruscitti et al.
patent: 4272228 (1981-06-01), Kutik et al.
patent: 5147073 (1992-09-01), Cater

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