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:
Jul. 03, 2012
Filed:
Jan. 04, 2010
Karl H. Moller, North Palm Beach, FL (US);
Andrew L. Jedick, Avon Lake, OH (US);
Thomas G. Ruffner, Oberlin, OH (US);
Karl H. Moller, North Palm Beach, FL (US);
Andrew L. Jedick, Avon Lake, OH (US);
Thomas G. Ruffner, Oberlin, OH (US);
Diamond Products, Limited, Elyria, OH (US);
Abstract
A core drill bit includes an elongate hollow cylindrical body having opposite first and second ends with an end section having an end face defining an annular non-planar surface. The cutting head includes a plurality of circumferentially spaced apart cutting segments, the cutting segments being electrical welded to the non-planar surface whereby raised portions of the surface melt during the welding to affix the cutting segments with the face of the tool body.