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:
Feb. 12, 1980
Filed:
Dec. 27, 1977
Applicant:
Inventor:
Raymond T Zweekly, Royal Oak, MI (US);
Assignee:
The Valeron Corporation, Oak Park, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23B / ; B26D / ; B26D / ; B23B / ;
U.S. Cl.
CPC ...
408199 ; 4082 / ; 407113 ; 407114 ;
Abstract
An indexable insert drill with a parallelogram shaped insert positioned at a negative axial lead, the insert having a slanted recess which provides an angularly oriented cutting edge extending from a face cutting corner through or slightly under and substantially beyond the drill axis, and a unique notch in the cutting edge providing chip interruption and stabilized lead.