초록 ▼

An automatic fluid dispenser including a pump mechanism actuated by a piston movable between a first position, and a second position in which a fluid is dispensed. A conduit is coupled to the pump mechanism and couplable to a pressurized fluid source. A valve is carried by the conduit and is movable

An automatic fluid dispenser including a pump mechanism actuated by a piston movable between a first position, and a second position in which a fluid is dispensed. A conduit is coupled to the pump mechanism and couplable to a pressurized fluid source. A valve is carried by the conduit and is movable between an open position in which a pressurized fluid from the pressurized fluid source moves the piston to the second position, and a closed position stopping the pressurized fluid.

대표청구항 ▼

[Having fully described the invention in such clear and concise terms as to enable those skilled in the art to understand and practice the same, the invention claimed is:] [1.]a liquid soap reservoir;a soap dispensing fixture;a pump mechanism including a housing defining a pump chamber having an inl

[Having fully described the invention in such clear and concise terms as to enable those skilled in the art to understand and practice the same, the invention claimed is:] [1.]a liquid soap reservoir;a soap dispensing fixture;a pump mechanism including a housing defining a pump chamber having an inlet coupled to the liquid soap reservoir and an outlet coupled to the soap dispensing fixture, a first check valve mounted in the inlet of the pump chamber for allowing liquid soap flow only into the pump chamber from the reservoir, and a second check valve mounted in the outlet for allowing liquid soap flow only out of the pump chamber to the soap dispensing fixture, a piston positioned within a bore in the housing for reciprocating motion between a first position in which the pump chamber has a volume and a second position in which the volume of the pump chamber is reduced, the pump mechanism including a biasing element biasing the piston into the first position;a conduit coupled to the bore and coupled to a pressurized water source, the conduit directing pressurized water from the pressurized water source onto the piston;a valve carried by the conduit and movable between an open position in which pressurized water from the pressurized water source moves the piston to the second position, and a closed position stopping the pressurized water;a water bleed coupled to the bore between the piston and the valve; anda sensor for actuating a solenoid to move the valve to the open position, the valve being normally biased to the closed position, the sensor being positioned proximate the fixture.