Dentistry – Apparatus – Having motor or means to transmit motion from motor to tool
Reexamination Certificate
2006-02-22
2009-02-10
Wilson, John J (Department: 3732)
Dentistry
Apparatus
Having motor or means to transmit motion from motor to tool
C433S098000, C081S469000, C081S479000
Reexamination Certificate
active
07488173
ABSTRACT:
A hand held instrument for carrying out some function on a work piece. The instrument is a handpiece that is held by the user and includes a working element at the distal end of the handpiece for working on the work piece. There is a source of power that activates the working element by providing power thereto in various forms. There is also a pressure sensor that senses the pressure between the working element and the handpiece. In one embodiment that pressure sensor senses a predetermined pressure in order to couple the power source to the working element for activating the working element. In another embodiment, the pressure sensor senses a reduction in pressure between the working element and the handpiece to illuminate an indicator light.
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English Translation of Foreign Patent DE 2906892; Translated by Schreiber Translation, Inc.
Jacob Arthur
Mai Hao D
Wilson John J
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