Liquid metering dispenser

Dispensing – Simulations – Firearms

Patent

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Details

222159, 222440, 222444, 222504, G01F 1142

Patent

active

042918200

ABSTRACT:
A liquid dispenser includes a metering chamber with a piston assembly movable therein for variance of the chamber volume and a supply chamber capable of liquid communication with the metering chamber. A hollow valve body with valve seats communicating with the metering and supply chambers and with a dispensing outlet is positioned between such chambers. A valve member is located within the valve body and is actuable by a control mechanism such that it is given an operating cycle whereby during one operating cycle the valve member is actuated into a first position to close the valve seat communicating with the supply chamber and to permit communication between the metering chamber and dispensing outlet and is maintained in the first position for a period of time sufficient to permit the emptying of the metering chamber through the dispensing outlet. The valve member and control mechanism are also arranged so that upon emptying of the metering chamber during one operating cycle the valve member is actuated into a second position so as to close the dispensing outlet and permit communication between the supply and metering chambers for refilling of the metering chamber.

REFERENCES:
patent: 28690 (1860-06-01), Rankin
patent: 436212 (1890-09-01), Chamberlin
patent: 1733310 (1929-10-01), Manley
patent: 1831028 (1931-11-01), Olson
patent: 2761595 (1956-09-01), Vergers
patent: 2838208 (1958-06-01), Levit
patent: 2961880 (1960-11-01), Griswold
patent: 3248011 (1966-04-01), Brodsky et al.
patent: 3930598 (1976-01-01), Slagle

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