Trigger type liquid dispenser

Details Trigger type liquid dispenser Trigger type liquid dispenser

B - Operations, Transporting

05

B

222/76

B05B 11/00 (2006.01)

Patent

CA 1291971

ABSTRACT OF THE DISCLOSURE A trigger type liquid dispenser having a nozzle unit including a nozzle at its front end, a pump operated by a trigger and a container mount, in which the pump is operated by the trigger and has an annular cylinder including concentric outer and inner cylindrical members of double wall shape projected forwardly of a body, and a piston unit telescoped in the annular cylinder and having an annular piston sliding on the inner surface of the outer cylindrical member and the outer surface of the inner cylindrical member, the piston unit having skirts annularly flared at the axial edges of the sliding surfaces as the sliding surfaces of the piston unit with the surface of the inner and outer cylindrical members, a spring contained in a spring chamber formed of a bore made of the inner cylindrical member of the annular cylinder and the piston unit telescoped in the inner cylindrical member at the axial center side for urging the piston unit outward of the axial center, the spring chamber capable of communicating with the atmosphere, and an intake valve for communicating the atmospheric air with the neck of the container whenever the piston unit is operated by the trigger. Thus, the trigger type liquid dispenser can protect a spring, complete a pumping action and smoothly execute the intaking operation of a liquid container.

542553

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