Dispensing device

Details Dispensing device Dispensing device

1980-01-24

1982-01-05

Rolla, Joseph J.

Dispensing

Supply containers with traps

With trap chamber cutoffs

222506, 222452, G01F 1138

Patent

active

043089780

ABSTRACT:
A dispenser device for liquids including a metering chamber having a valve controlled inlet port and a valve controlled outlet port. An actuator is connected to the two valves to move them between fill and discharge conditions and is arranged to cause the inlet valve to close before opening the outlet valve during transfer from the fill to the discharge condition. The actuator includes a cylinder movable over a piston fixed to the body of the device and the valves respond to movement of the cylinder between two extreme positions corresponding to the fill and discharge conditions respectively. A biasing system urges the cylinder into the fill position at which the inlet valve is open and the outlet valve is closed, and a time delay arrangement operates to retard movement of the cylinder during part of its travel from the discharge position to the fill position. The cylinder is moved into the discharge position by operation of an actuator member and a first latch functions to hold the cylinder at the discharge position until the actuator member returns to its initial rest position, and a second latch functions to hold the actuator member in its rest position until the cylinder returns to the fill position. The two latches are interconnected so that the first is rendered inoperative by movement of the second into its latching position.

REFERENCES:
patent: 2626066 (1953-01-01), Rasmussen
patent: 2721005 (1955-10-01), Lesnick
patent: 3165235 (1965-01-01), Madaffer
patent: 4121584 (1978-10-01), Turner et al.

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