Metering dispenser

Details Metering dispenser Metering dispenser

1986-08-18

1989-02-21

Rolla, Joseph J.

Dispensing

Including timer

For timing dispensing period

222425, 222449, 222448, 222451, 222506, G04C 2300

Patent

active

048058157

ABSTRACT:
A metering dispenser including a metering chamber having an inlet port and an outlet port, an inlet valve for admitting flowable material to the metering chamber through the inlet port, an outlet valve for allowing discharge of the material. To control operation of the inlet and outlet valves, a valve control member is operatively associated with the inlet and outlet valves and is pivotally movable between two extreme limits of pivotal movement which correspond respectively to fill and discharge conditions of the dispenser. A control biasing spring is associated with the valve control member and biases the valve control member towards the one of the extreme limits of pivotal movement corresponding to the dispenser being in the fill condition. An actuator is operative to move the valve control member against the action of the biasing spring. The valve control may be mechanically operative to control operation of the inlet and outlet valves. Alternatively the valve control may be electrically operable and include a timer operative to generate a timing signal and electrically operable valve operator responsive to the timing signal to change the dispenser from its fill to its discharge condition and to return the dispenser from its discharge to its fill condition after material discharge.

REFERENCES:
patent: 3380629 (1968-04-01), Kontrao et al.
patent: 3913807 (1975-10-01), Lale et al.
patent: 4266697 (1981-05-01), Zissimopoulos
patent: 4308978 (1982-01-01), Bayly et al.
patent: 4440326 (1984-04-01), Bayly et al.
patent: 4487333 (1984-12-01), Pounder et al.

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