Nakanishi Inc.

Shinichirou Muto

Hayato Matsushita

Atsushi Okada

Keita Yokochi

Masaru Ishijima

Yukihiro Ueki

A method for maintenance checking of a dental handpiece is disclosed. The method comprises measuring in advance no-load current values of a drive motor, with a handpiece known as being in usable condition and a handpiece known as insufficiently maintained respectively connected thereto and operated in no-load condition, storing as reference data the no-load current values of the drive motor together with associated data relating to degree of maintenance, measuring a no-load current value of the drive motor with a dental handpiece to be checked connected thereto and operated in no-load condition, and determining whether the handpiece checked is usable, requires maintenance, or is unusable, by comparing the measured no-load current value with the reference data.

Maintenance checking system and method for dental handpiece, and system and method for controlling drive motor

The joint of the present invention facilitates connection and disconnection of the motor unit to and from the power cords in the hose, and makes the connecting area between these two parts as compact as practicable. In the joint, the motor-unit-side connector is arranged projecting from the connecting-end opening of the motor casing, whereas the power-cord-side connector is arranged offset from the connecting-end opening of the end cap, so that the two connectors are connectable inside the end cap

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Kanuma, Japan

Shinichirou Muto