Self contained power actuated dental appliance

Claim 1

A dental appliance comprising: an elongated hollow housing extending from a hand gripping, first end to an implement supporting end, said housing comprising a first portion adjacent its first end and a second portion detachably mounted in axial alignment therewith comprising the implement supporting end, power means mounted within said first portion to provide a balanced handle for said tool having an optimum weight distribution, said power means comprising a direct current motor and a battery for energization thereof, said motor having a shaft extending axially of said housing at the point of engagement of said first portion with said second portion, a bevel gear fixedly attached to said shaft extending outwardly of said first portion for rotating at the same rate of speed as said motor, a switch mounted on the outer periphery of said first portion for controlling said motor, a drive pulley mounted in said second portion at the implement supporting end, a gear reduction drive mounted within said second portion and connectable with said bevel gear of said first portion and said drive pulley in said second portion when the first and second portions are interconnected, said gear reduction drive comprising a wheel perpendicularly mounted to the axis of said shaft within said second portion and having a set of gear teeth around its periphery for engaging with said bevel gear, an implement mounting means provided adjacent said implement supporting end for engaging and being driven by said drive pulley, and a drive belt within said second portion for connecting said drive pulley to said gear reduction means, said first portion of said housing comprising a compartment for containing a battery charging means at said first end of said housing in axial alignment with a battery and said direct current motor forming said power means, said charging means comprising one coil of an electric power rectifying means.