Canyon Corporation

Akihiko Yamada

Tetsuya Tada

Kazuyuki Kawamoto

A flowing-out passage consists of a small-diameter portion located at the cylinder side and a large-diameter portion located at the orifice side. Provided in the passage is a secondary valve. Skirt-shaped seals are mounted on a secondary valve and set in sliding contact with the inner surface of the flowing-out passage to prevent communication between the small-diameter and large-diameter portions. The secondary valve has a valve spring, a valve body, and a valve seat located at the orifice side. The valve spring set the valve body in contact with the valve seat. Liquid pressures are applied on the secondary valve on both sides. The valve body can be moved away from the valve seat against the force of the valve spring, by a difference between the liquid pressures.

Manually operated trigger type dispenser

A trigger-type sprayer according to the present invention sucks up, pressurizes and sprays a liquid contained in a container having a mouth portion. The sprayer is provided with a housing attached to the mouth portion of the container, a trigger rockably attached to one end portion of the housing, a nozzle formed on the trigger and having an orifice, a cylinder supported at the middle portion on the housing and capable of facing the orifice, a suction tube attached to the other end portion of the cylinder and connecting the interior of the cylinder and that of the container, a piston one end of which is connected to the nozzle and the other end of which is located in the cylinder, the piston slidably touching the inner surface of the cylinder, a primary valve for selectively connecting the suction tube and the cylinder, and a secondary valve for selectively connecting the cylinder and the piston. The housing, trigger, nozzle, cylinder and suction tube are integrally formed.

Growing community of inventors

Onoda, Japan

Akihiko Yamada