Dentistry – Apparatus – Having motor or means to transmit motion from motor to tool
Patent
1979-12-18
1981-07-14
Mancene, Gene
Dentistry
Apparatus
Having motor or means to transmit motion from motor to tool
433130, 433105, A61C 108
Patent
active
042784298
ABSTRACT:
A dental handpiece, which has a drive motor part connected to a housing and a head part with a socket for supporting a tool for rotation being releasably secured on the housing, characterized by the handpiece being convertible between an angled handpiece and a straight handpiece. This is accomplished by the housing being composed of a first housing member, a second housing member, a device for interconnecting the first and second housing members for swivel movement between a first position with their drive shaft sections extending at an angle to each other and a second position with the drive shaft sections being in axial alignment, and a device for holding the housing members in a selected one of the first and second positions. The head part has a sleeve of a configuration to telescopically cover the second housing member and the majority of first housing member while the members are held in one of the first and second positions so that by changing the head part to provide another head part having a sleeve with a different configuration, the handpiece is converted between an angled handpiece and a straight handpiece.
REFERENCES:
patent: 219849 (1879-09-01), Cushing
patent: 374286 (1887-12-01), Bell et al.
patent: 600243 (1898-03-01), Case et al.
patent: 636476 (1899-11-01), Webster
patent: 647010 (1900-04-01), Marshall
patent: 3229369 (1966-01-01), Hoffmeister et al.
Schuss Werner
Straihammer Reinhard
Mancene Gene
Siemens Aktiengesellschaft
Wilson John J.
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