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. 26, 2020
Filed:
Jun. 01, 2017
Agency for Defense Development, Daejeon, KR;
Seong Lee, Daejeon, KR;
Seong-Ho Yang, Daejeon, KR;
Lee-Ju Park, Daejeon, KR;
Hak-Jun Kim, Daejeon, KR;
Hyoung-Seop Kim, Pohang-si, KR;
See-Am Lee, Cheonan-si, KR;
Ho-Yong Um, Incheon, KR;
AGENCY FOR DEFENSE DEVELOPMENT, Daejeon, KR;
Abstract
In a localized torsional severe plastic deformation method for conical tube metal, a desired region of a conical tube metal can be subjected to severe plastic deformation using molds in which roughness is formed at predetermined regions. The method includes roughening a predetermined region of each of the molds; sticking the conical tube metal only to the roughened regions of the molds; moving the lower mold toward the upper mold to apply a load to the conical tube metal; and rotating the molds to apply severe plastic deformation to the conical tube metal only at the regions stuck to the roughened regions of the molds.