Single shot liquid dispenser

Dispensing – Automatic control

Patent

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Details

2221813, 222340, 2223831, 222477, B67D 508, B65D 8854, B65D 4700

Patent

active

059081430

ABSTRACT:
A manually operated dispenser for dispensing single shots of liquid with a built-in extended delay between each manually dispensed shot is described. The dispenser contains a manually operated pump for withdrawing a single shot of liquid from the reservoir of liquid, an outlet through which the pump dispenses the single shot and a reciprocal piston and cylinder assembly on the pump. The piston is ready to dispense the single shot of liquid into the outlet when in a retracted position. A plunger which is biased to move away from the piston manually moves the piston to dispense the shot. A detent is provided for locking the plunger in an outward position. A piston spring is loaded in a manner such that when the piston is moved to a retracted position the detent is disengaged and the relative movement of the piston from the extended position to the retracted position defines a built in extended delay between dispensed shots of liquid.

REFERENCES:
patent: 1401642 (1921-12-01), Ravaz et al.
patent: 3460723 (1969-08-01), Young
patent: 4360130 (1982-11-01), Nishimura et al.
patent: 4784300 (1988-11-01), Lees
patent: 5086950 (1992-02-01), Crossdale et al.
patent: 5445288 (1995-08-01), Banks
patent: 5456297 (1995-10-01), Crossdale et al.
patent: 5682930 (1997-11-01), Crossdale
International Search Report dated Feb. 28, 1997.

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