Dental prophylactic right angle hand piece

Details Dental prophylactic right angle hand piece Dental prophylactic right angle hand piece

1978-08-24

1980-01-08

Kinsey, Russell R.

Dentistry

Apparatus

Having motor or means to transmit motion from motor to tool

433125, A61C 306

Patent

active

041820410

ABSTRACT:
The dental prophylactic right angle hand piece of the knob type includes conventional driving and driven members, with the driven member including an integral collar and an integral serrated knob to which the dental application or cup is releasably secured for preventing the cup from slipping under pressure. The collar forms an effective seal between the head of the hand piece and the cup to prevent bacteria from entering the interior of the hand piece. With such a construction the hand piece can be operated forwardly or backwardly without the cup slipping or falling out of the hand piece.

REFERENCES:
patent: 689596 (1901-12-01), Platt
patent: 1179216 (1916-04-01), Ragatz
patent: 1499345 (1924-07-01), Chott
patent: 1499346 (1924-07-01), Chott
patent: 1673913 (1928-06-01), Jurgensen
patent: 1720017 (1929-07-01), Touchstone
patent: 3389468 (1968-06-01), Lewis et al.
patent: 3407502 (1968-10-01), Richmond
patent: 3740853 (1973-06-01), Brahler
patent: 3757419 (1973-09-01), Hopkins
patent: 3758948 (1973-09-01), Bareth

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