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:
Dec. 18, 1990
Filed:
Mar. 06, 1990
Applicant:
Inventor:
Eric Tjernstrom, Gavle, SE;
Assignee:
Sandvik AB, Sandviken, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23B / ;
U.S. Cl.
CPC ...
409233 ; 279 / ; 4082 / ;
Abstract
A tool clamping device for machine tools comprises a draw bar that is axially displaceable inside a machine spindle and a locking element arranged in cooperation with the draw bar. The device becomes secured to a toolholder by effecting a relative movement between the draw bar and the locking element to effect a lateral displacement of the locking element into locking engagement with a shaft portion of the toolholder. Continued axial movement of the draw bar is transmitted as axial movement to the toolholder.