Removably fixing a dental instrument with a retractable...

Details Removably fixing a dental instrument with a retractable... Removably fixing a dental instrument with a retractable...

2006-02-24

2011-12-13

Rodriguez, Cris L (Department: 3732)

Dentistry

Apparatus

Having motor or means to transmit motion from motor to tool

C279S075000, C279S082000

Reexamination Certificate

active

08075311

ABSTRACT:
A head assembly for attaching to a dental instrument has a body, a rotary shaft with a pinion thereon, at least one retractable catch latching lever and a retractable catch. The rotary shaft has a central bore suitable for receiving a shank of the dental instrument therein. The latching lever has a peg engageable with an annular latching groove of the shank of the dental instrument. The catch has a positioning plane coinciding with the drive flat of the instrument. The body has a circular opening closed off by a push button cooperative with the rotary shaft so as to release the shank of the dental instrument.

REFERENCES:
patent: 5037299 (1991-08-01), Nakanishi
patent: 5704786 (1998-01-01), Quinn
patent: 2918816 (1979-12-01), None
patent: 10311455 (2004-09-01), None
patent: 0470324 (1992-02-01), None

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