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:
Oct. 17, 1995
Filed:
Jun. 07, 1994
Applicant:
Inventor:
Herbert Erath, Waldachtal-Salzstetten, DE;
Assignee:
Fischerwerke Artur Fischer GmbH & Co KG, Waldachtal, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24B / ;
U.S. Cl.
CPC ...
451211 ; 451135 ;
Abstract
A device for producing drilled holes with an undercut has a swivel bearing, a drill shank mounted in the swivel bearing, swivelling means displacing the drill shank in a gyratory movement about a center line of drilling, a displacement element projecting at one side from the swivel bearing and displacing the drill shank against a resilient restoring force, and a ring around which the displacement element moves.