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:
Aug. 28, 1990
Filed:
Nov. 08, 1989
Applicant:
Inventors:
Rainer von Haas, Geesthacht, DE;
Gunter Ruther, Marl, DE;
Assignee:
Krupp Widia GmbH, Essen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B23Q / ;
U.S. Cl.
CPC ...
409136 ; 408 56 ; 409137 ; 409231 ; 409232 ;
Abstract
A tool holder system for stationary or rotatable tool holders in machine tools with manual or automatic tool change, has a tool holder provided with a mechanism for locking the tool head onto clamping surfaces, and integrated liquid coolant supply and a compressed air supply to the clamping surfaces. At the clamping end of the tool holder, a checkvalve is provided in the air supply passage to block incursion of liquid coolant even at high pressures of the latter and thus prevent corrosion and damage which may result from such corrosion.