Dental handpiece

Details Dental handpiece Dental handpiece

1978-11-09

1980-07-22

Peshock, Robert

Dentistry

Apparatus

Having motor or means to transmit motion from motor to tool

433127, 433132, A61C 110

Patent

active

RE0303402

ABSTRACT:
A dental handpiece comprises an air driven turbine rotor provided with a chuck to removably hold a dental bur and rotate it at extremely high speed. The rotor is mounted on anti-friction bearings within a capsule which is removably received within a housing to permit replacement of the capsule and turbine as a unit. The fluid outlet from the turbine is restricted sufficiently to ensure that a portion of the fluid is exhausted through the bearings and openings in the housing to prevent egress of foreign matter into the interior.

REFERENCES:
patent: 1878747 (1932-09-01), Youngblood
patent: 2090885 (1937-08-01), Clark
patent: 2180993 (1939-11-01), Monnier
patent: 2231393 (1941-02-01), Mulvany
patent: 2283314 (1942-05-01), Ckola
patent: 2606366 (1952-08-01), Stevens
patent: 2671700 (1954-03-01), Seyffert
patent: 2716982 (1955-09-01), Ryan
patent: 2799934 (1957-07-01), Kern
patent: 2871562 (1959-02-01), Kern
New Zealand Patent Office Journal, May 23, 1951, Publication of Abstract of New Zealand Patent bearing Nos. 102,433, and 104,611.

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