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:
Jul. 18, 1995
Filed:
Feb. 15, 1994
Applicant:
Inventor:
Hermann Landgraf, Lorsch, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61C / ;
U.S. Cl.
CPC ...
433 82 ; 433104 ;
Abstract
A medical instrument, particularly a dental instrument has a head housing with a chucking arrangement for gripping an internally-cooled tool. In order to assume an optimum transfer of coolant from a delivery channel into an internal channel of the tool, an exit opening of the delivery channel is arranged opposite the admission opening of the tool in a no-contact fashion at the end of the tool being gripped. To prevent leakage, sealing gaps are provided between the moving parts in the head housing and compressed air is charged into these sealing gaps under a higher pressure in comparison to the pressure of the coolant.