Dentistry – Apparatus – Having motor or means to transmit motion from motor to tool
Reexamination Certificate
2007-08-21
2007-08-21
Lewis, Ralph A. (Department: 3732)
Dentistry
Apparatus
Having motor or means to transmit motion from motor to tool
C433S127000
Reexamination Certificate
active
11451393
ABSTRACT:
A press-type bit-holding mechanism of a dental high-speed handset, including a hollow rotary shaft, a push button accommodated in the hollow rotary shaft and a holder barrel also accommodated in the hollow rotary shaft. The push button has a first coupling section formed with two opposite splits and two opposite first projecting posts. The first projecting posts and the splits are interlaced with each other. The holder barrel has a second coupling section has two second splits and two second projecting posts complementary to the first splits and the first projecting posts of the first coupling section of the first coupling section of the push button.
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Lewis Ralph A.
Rosenberg , Klein & Lee
Thunder Tiger Corporation
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