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. 30, 1977
Filed:
Feb. 27, 1976
Hilti Aktiengesellschaft, Schaan, FL;
Abstract
A drilling tool for use in boring holes is formed of an axially elongated drilling member and a holder or input unit. The input unit laterally encloses the rearward end of the drilling member and is formed of at least two materials, one having a higher thermal conductivity than the other. The higher thermal conductivity material is in contact with the shank of the drilling member and extends radially outwardly to the outer surface of the input unit. The higher thermal conductivity material can have various shapes, for instance, that of a coil, spaced disks, a sleeve with inwardly extending webs or an inner sleeve and an outer sleeve spaced apart and joined by a flange-like web. The second material may be a plastic and can be fixed into holes or openings formed in the first material.