The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 23, 1999
Filed:
Jan. 23, 1998
Applicant:
Inventor:
Wolfgang Behringer, Bensheim, DE;
Assignee:
Sirona Dental Systems GmbH & Co. KG, Bensheim, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61C / ;
U.S. Cl.
CPC ...
433 28 ; 433 98 ; 433101 ;
Abstract
A system for activating a dental handpiece connected to a supply hose after removal of the handpiece from a holder is provided. The handpiece includes a circuit with a switch element that acquires a change of an electrical or magnetic field or that can be influenced by such a field when the handpiece is taken from a holder or, respectively, is returned into a holder. The switch element is allocated to the end part of the supply hose facing toward the handpiece; the part that changes or, respectively, influences the field is disposed at the holder.