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:
May. 21, 1991
Filed:
Nov. 02, 1989
Osamu Tsujimura, Kawasaki, JP;
Tatsuo Arai, Kitamoto, JP;
Masaaki Nakayama, Tokyo, JP;
Masayuki Okawa, Kawasaki, JP;
Mitsubishi Kinzoku Kabushiki Kaisha, Tokyo, JP;
Abstract
An indexable cutter insert for a rotary cutter includes a plate having front and rear faces. The front face has at least one pair of first and second marginal ridges intersecting each other. The first marginal ridge is generally arcuately shaped when viewed in a direction perpendicular to the front face and serves as a main cutting edge. The second marginal ridge is short and straight and serves as a second cutting edge. The main cutting edge has a leading end portion intersecting the second cutting edge so as to define an obtuse angle therebetween. The front face serves as a rake surface for the main and second cutting edges and has a marginal surface portion disposed adjacent to the second cutting edge and the leading end portion of the main cutting edge. The marginal surface portion is convexly curved so as to slope toward the rear face toward the second cutting edge.