Water injection type dental handpiece

Details Water injection type dental handpiece Water injection type dental handpiece

1996-05-31

1998-10-06

Lewis, Ralph

Dentistry

Apparatus

Having intra-oral dispensing means

433115, A61C 102

Patent

active

058168036

ABSTRACT:
A center injection type dental handpiece contains a cutting bar having a hollow axially penetrating the bar, holding means for detachably holding the bar, rotating means for rotating the bar, a water injection nozzle communicating with a cooling water feed source. The water injection nozzle is inserted into the hollow of the bar for injecting a cooling water from tip of the bar. The handpiece further contains a packing for sealing a gap between the outer periphery of the nozzle and the inner periphery of the bar at the proximal end of the bar.

REFERENCES:
patent: 2400912 (1946-05-01), Britt et al.
patent: 5022857 (1991-06-01), Matsutani et al.
patent: 5275558 (1994-01-01), Seney
patent: 5433604 (1995-07-01), Lawdgraf
patent: 5531596 (1996-07-01), Melde

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