Kabushiki Kaisha Morita Seisakusho

Jun Tamura

Takahiro Matsui

Kazuo Hozumi

Kazuyoshi Kaneko

The present invention relates to a balancing device for vertically movable dental arms such as a dental light arm and a dental tray arm, and more specifically to a balancing device which is capable of accurately positioning the arm at any desired position by sufficiently balancing the weight of a load head with the force of the spring member coaxially inserted in the arm. The balancing device features compact size, low cost and high operability.

Balancing device for dental arm

This disclosure relates to improvements in a dental treatment chair assembly including a unit table having various instruments attached thereto in combination with a unit arm mechanism. The assembly is so constructed that the unit arm mechanism is made slidable in the direction of the mechanism crossing (preferably at right angles with) the body axis of the chair. Such construction makes it possible to meet the convenience of both a doctor and a nurse in their operation of the instruments in dental treatment.

Dental treatment chair assembly

An air operated oil pressure control valve wherein the inlet port and the outlet port for oil are provided in the valve body at a position wherein they face each other with a normally closed valve port located in between. When compressed air is introduced into the valve body, the valve port is opened, allowing the oil pressure to pass through the valve.

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Kyoto, Japan

Jun Tamura