Medical, especially dental handpiece

Details Medical, especially dental handpiece Medical, especially dental handpiece

1989-07-12

1990-12-04

Weiss, John

Dentistry

Apparatus

Having intra-oral dispensing means

433165, 433115, A61C 302

Patent

active

049750569

ABSTRACT:
A medical handpiece, and especially a dental handpiece, including a drivable worktool or implement which is rotatably supported with its shaft at one end of the handpiece and which projects from this handpiece end with its operating end. The implement possesses an elongate blind bore-like passageway which communicates with the outside at the work end of the implement through the intermediary of a discharge opening, and with which there is associated a supply line arranged within the handpiece for the infeed of cooling media to at least one radial through-opening of the implement which stands in communication with the elongate passageway; whereby the at least one radial through-opening is sealed with respect to the interior of the handpiece through the intermediary of a seal which encompassing the shaft of the implement and contacts against a wall portion of the handpiece.

REFERENCES:
patent: 2098317 (1937-11-01), Stauut
patent: 3762052 (1973-10-01), Melde
patent: 4369034 (1983-01-01), Garuier et al.

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