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:
Nov. 28, 2006
Filed:
Apr. 30, 2003
Applicants:
Iqbal Singh, Buffalo Grove, IL (US);
Kornel Ehmann, Evanston, IL (US);
Inventors:
Iqbal Singh, Buffalo Grove, IL (US);
Kornel Ehmann, Evanston, IL (US);
Assignee:
Irwin Industrial Tool Company, Huntersville, NC (US);
Primary Examiner:
Int. Cl.
CPC ...
B23B 51/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A spade bit including a longitudinally extending shaft having a cutting member located at a distal end thereof. The cutting member comprises a pair of helically shaped, opposed blades joined along the longitudinal axis of the shaft and an axially extending pilot spur. The pilot spur defines a pair of cutting edges, and each of the blades defines a forward cutting edge joined with a respective cutting edge of the pilot spur.