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:
Apr. 14, 1992
Filed:
Nov. 06, 1990
Applicant:
Inventor:
Ulrich Bechem, D-5800 Hagen 1, DE;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B26D / ;
U.S. Cl.
CPC ...
83491 ; 836475 ; 51 90 ; 125 19 ; 125 20 ;
Abstract
An apparatus for percussively milling slots in rock or the like includes a flat disk-like radial boring tool mounted on a drive shaft which is rotated slowly against the work while being driven percussively and radially outwardly toward the work in the neighborhood of, for example, forty times for every revolution of the tool.