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. 07, 1990
Filed:
Sep. 06, 1989
Rainer von Haas, Geesthacht, DE;
Abstract
A tool coupling for connecting a tool head to a tool holder to secure the tool head against rotation and provide axial prestress. The tool head, which serves as a cutting tool, includes a shank having at least a portion which is conically configured, a threaded bore, and an annular contact collar. The tool holder includes a sleeve-shaped receiving bore corresponding to the shank, at least a portion of the receiving bore being conically configured, a tightening screw, and an annular contact face. An additional bore in the shank of the tool head ensures a prestress between the shank and the tool carrier including the receiving bore, and such prestress is not entirely relieved even if lateral forces act on the tool head. This keeps the tool head from vibrating in the receiving bore.