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:
Mar. 28, 2006
Filed:
Dec. 22, 2003
Yasushi Sasagawa, Tsukuba, JP;
Koji Masamoto, Yuki-Gun, JP;
Junichi Saito, Tsukuba, JP;
Kenichi Yajima, Shimozuma, JP;
Takeshi Sato, Iwai, JP;
Yasushi Sasagawa, Tsukuba, JP;
Koji Masamoto, Yuki-Gun, JP;
Junichi Saito, Tsukuba, JP;
Kenichi Yajima, Shimozuma, JP;
Takeshi Sato, Iwai, JP;
Mitsubishi Materials Corporation, Tokyo, JP;
Abstract
The drill of the present invention has only one cutting discharge groove () formed in the outer periphery of a bit (). A leading edge protruding farthest towards the tip in the axial direction in a tip flank () is composed at a single point and located on an axis (O). When bit is viewed from the tip side in the direction of axis, tip flank is in the form of a multilevel surface composed of second through fourth flanks (B,C andD) arranged along the peripheral direction, and a reverse side first flank (E) surrounded by second through fourth flanks and intersecting with axis.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile