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:
Sep. 16, 2014
Filed:
Jun. 23, 2009
Tae Sik Yoon, Seonnam-si, KR;
Soon Jin Cho, Suwon-si, KR;
Seung Hyun Cho, Seoul, KR;
Jae Joon Lee, Suwon-si, KR;
Tae Sik Yoon, Seonnam-si, KR;
Soon Jin Cho, Suwon-si, KR;
Seung Hyun Cho, Seoul, KR;
Jae Joon Lee, Suwon-si, KR;
Bestner Inc., Seongnam-Si, Gyeonggi-Do, KR;
Abstract
A method of fabricating a micro drill, which includes a drill part for machining a hole and a shank part fixed to a motor, the drill part and the shank part being made of different materials. The method includes the steps of forming a drill part-forming powder compact having a recess in one end thereof, and forming a shank part-forming powder compact having a protrusion, the protrusion intended to be fitted into the recess of the drill part-forming powder compact, forming an assembly of the drill part-forming powder compact and the shank part-forming powder compact, with the protrusion fitted into the recess, and simultaneously sintering the assembly of the drill part-forming powder compact and the shank part-forming powder compact.