Dental prophy angle

Details Dental prophy angle Dental prophy angle

1995-09-27

1997-07-08

O'Connor, Cary E.

Dentistry

Apparatus

Having motor or means to transmit motion from motor to tool

433134, A61C 306

Patent

active

056454260

ABSTRACT:
A prophy angle having a single improved snap-in mounting shaft having an enlarged snap-through outer boss portion that is discontinuous in circumference for retaining the prophy cup rotor in permanent position and isolating the rotor from frictionally engaging other parts other than through the gearing except under stress, a press fit drive shaft retention locking sleeve that frictionally engages the housing when pressed into locking position, a reduction of the surface contact of the drive shaft with the inside of the housing by introducing vanes in contact with the housing wall rather than a continuous cylinder contact, and a closed vent hole with a hub on the drive shaft.

REFERENCES:
patent: 794006 (1905-07-01), Gossling
patent: 2090885 (1937-08-01), Clark
patent: 2451192 (1948-10-01), Blair
patent: 3727313 (1973-04-01), Graham
patent: 3740853 (1973-06-01), Brahler
patent: 5040978 (1991-08-01), Falcon et al.
patent: 5120220 (1992-06-01), Butler
patent: 5156547 (1992-10-01), Bailey
patent: 5328369 (1994-07-01), Bailey
patent: 5348473 (1994-09-01), Kivlighan, Jr.
patent: 5352119 (1994-10-01), Sahurai
patent: 5423679 (1995-06-01), Bailey

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