Permanently lubricated dental prophylaxis angle

Details Permanently lubricated dental prophylaxis angle Permanently lubricated dental prophylaxis angle

1998-03-14

1999-10-12

Mancene, Gene

Dentistry

Apparatus

Having motor or means to transmit motion from motor to tool

433126, A61C 306

Patent

active

059645903

ABSTRACT:
A maintenance-free dental prophylaxis angle includes a one-piece body including a sleeve and a head. The sleeve and head define intersecting bores. A one-piece drive gear including an enlarged bearing part and a forward gear end is journaled directly in the sleeve and held axially between a retaining ring engaging the rear of the enlarged bearing part and a ball engaging the forward gear end. A one-piece driven gear is journaled solely in a cap which is press fit in the head bore The driven gear is engaged and driven by the drive gear. The driven gear includes an upper bur tube and a lower gear part. The gear part of the driven gear rests on the ball, and is restrained from axial movement by the cap and the ball, which forms a thrust bearing for the driven gear. A dental tool is connected to the bur tube of the driven gear, and forms a seal with the cap.

REFERENCES:
patent: 2098317 (1937-11-01), Staunt
patent: 3163934 (1965-01-01), Wiseman
patent: 3707042 (1972-12-01), Talaga
patent: 4486175 (1984-12-01), Fisher et al.
patent: 4947942 (1990-08-01), Lightle et al.
patent: 5348473 (1994-09-01), Kivlighan, Jr.
patent: 5352119 (1994-10-01), Sakurai
patent: 5484284 (1996-01-01), Bailey
patent: 5642995 (1997-07-01), Bailey
patent: 5645426 (1997-07-01), Grim et al.
patent: 5683247 (1997-11-01), Bailey
patent: 5749728 (1998-05-01), Bailey

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