Yamada Yuki Seizo Co., Ltd.

Jinichi Ito

A diaphragm pump includes a pump chamber, a pressure fluid chamber, a diaphragm partitioning the interior of the pump into the pump chamber and the pressure fluid chamber, a cylinder communicating with the pressure fluid chamber, and a plunger reciprocable within the cylinder. The pressure fluid chamber or the cylinder communicates with a pressure fluid reservoir via a pressure regulating valve adapted to open when the pressure in the pressure fluid chamber is too high, and a valve adapted to open before the pressure in the pressure fluid chamber is too low, and to close when the pressure is restored to a given pressure level.

Diaphragm pump

A wheel balancer comprising a pair of shafts for supporting a rotary shaft for rotatably mounting a wheel having an amount of unbalance to be measured is disclosed. The supporting shafts are located on a circle having a center which is coincided with a movable instantaneous center of vibration of the wheel and held by a pair of spring members such that the supporting shafts are movable in a direction of a tangent touching the above mentioned circle. The amount of unbalance of the wheel is converted into an electrical signal which is supplied through a calculation circuit to a comparison circuit which can detect the position of the instantaneous center of vibration by means of an indicating means movable in proportional to the amount of movement of the instantaneous center of vibration of the wheel.

Growing community of inventors

Tokyo, Japan

Jinichi Ito