Dentistry – Apparatus – Including activator or regulator for controller or drive
Patent
1980-09-17
1982-07-20
Mancene, Gene
Dentistry
Apparatus
Including activator or regulator for controller or drive
433 28, 433100, 433 85, 200 85R, 200157, 200243, 200335, 137 45, 219242, 219379, A61C 102
Patent
active
043403689
ABSTRACT:
A hand held power tool, particularly of the type of a dental handpiece or the like is provided with power shut-off means disposed directly within the handle. The shut-off means is mechanically connected with a suspension means for suspending the hand piece or the like power tool such that the weight of the tool shuts off power supply to the tool. In a particularly preferred embodiment, a dental handpiece is disclosed wherein the suspension means is a magnet, whereby the handpiece can be suspended on any ferromagnetic surface without having to reach to a suspension fork which, in the known devices, is itself associated with a shut-off valve. The basic idea of the invention has broad application in many different fields of technology. The advance in the art, best represented by the dental handpiece, is an added convenience of temporarily suspending the handpiece at a place remote from the suspension fork which often is inconvenient to reach, while achieving the power shut-off without having to manipulate any further control means.
REFERENCES:
patent: 635930 (1899-10-01), Harriman
patent: 908238 (1908-12-01), Ganser
patent: 1085858 (1914-02-01), Fulton
patent: 1247907 (1917-11-01), Tully
patent: 1514582 (1924-11-01), Mabey
patent: 1655746 (1928-01-01), Wachtel
patent: 1977263 (1934-10-01), Campbell
patent: 2052654 (1936-09-01), Ponath
patent: 2134857 (1938-11-01), Burgess
patent: 3430710 (1969-03-01), Coss
Mancene Gene
Wilson John J.
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