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Trigger-type-liquid-injector

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Trigger type liquid injector

Details

Inventors: Saito, Tadao; Tasaki, Takaharu;
Assignee: Yoshino Kogyosho Co., Ltd. (Tokyo, JP)
Primary Examiner: Love; John J.
Assistant Examiner: Forman; Michael J.
Attorney, Agent or Firm: Stevens, Davis, Miller & Mosher

Herein disclosed is a trigger type liquid injector which includes a body mounted to stand on a liquid container, an injection cylinder extending in a horizontal direction from the upper portion of the body, and pumping means arranged at such an interior angle as is defined by the body and the injection cylinder. There is mounted in the base of the injection cylinder a discharge valve which is opened by the internal pressure in a pump chamber when this pressure exceeds a predetermined level. There is mounted on the front portion of the injection cylinder a nozzle cap which can change the states of the liquid being injected. The pumping means is actuated by the engagement between a recessed portion formed in a piston member and a trigger.

DETAILED DESCRIPTION It is therefore a primary object of the present invention to provide a trigger type liquid injector, in which a discharge valve is adapted to be opened only when the pressure in a pump chamber exceeds a predetermined level to make the atomizing pressure higher than a predetermined level, so that a proper atomization can be established.
A secondary object of the present invention is to provide a trigger type liquid injector, in which the pump chamber of pumping means is arranged at an inclination with respect to a horizontal injection cylinder so that a piston member can be forced back and forth by engagement between the piston member and a trigger.
Another object of the present invention is to provide a trigger type liquid injector, in which the first air bleeding operation of the pump chamber is facilitated, in which evaluation of a liquid container can be prevented when the injector is mounted on the liquid container, and in which the closure of a nozzle and the state of the liquid being injected can be easily changed.

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