Disposable prophy angle

Details Disposable prophy angle Disposable prophy angle

1989-11-21

1991-07-02

Weiss, John G.

Dentistry

Apparatus

Having motor or means to transmit motion from motor to tool

433114, A61C 306

Patent

active

050282336

ABSTRACT:
A disposable prophy angle is permanently assembled from four plastic components each of which is integrally formed in one piece. Two of the components are mating half sections which when bonded together along a longitudinal mating plane form a housing for an input gear member secured in driving engagement with an output gear. The input gear with its rearwardly extending drive spindle is housed in an elongated tubular portion of the completed housing while the output gear, except for its protruding prophy cup-receiving mandrel or button, is housed in the nose portion on the front end. The housing has internal formations which provide thrust and support bearing elements for cooperating bearing elements on the gear members. The components can be mass-produced and assembled at low cost making it economic to discard the prophy angles after one use.

REFERENCES:
patent: 3163934 (1965-01-01), Wiseman
patent: 3740853 (1973-06-01), Brahler
patent: 3798777 (1974-03-01), Reiter
patent: 3869877 (1975-03-01), Brahler
patent: 4182041 (1980-01-01), Girard

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