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:
Sep. 13, 1977
Filed:
May. 12, 1976
Applicant:
Inventor:
Heinrich Kruger, Essen, DT;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23B / ; B23B / ; B23B / ;
U.S. Cl.
CPC ...
4082 / ; 408144 ; 408186 ;
Abstract
A drilling tool, particularly for working metals, in which a tool holder is provided at its frontal or end surface with a receiving slot which is open on three sides and in which an interchangeable blade type drill bit is fastened. A bar-shaped adapter is symmetrically inserted into the receiving slot between the drill bit and the bottom surface of the slot. The adapter extends laterally beyond the periphery of the tool holder with one end surface abutting the bottom surface of the slot and the opposite end surface contacting and providing an abutment for at least the portions of the blade shaped drill bit which extend laterally beyond the periphery of the tool holder.