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:
Nov. 22, 2016
Filed:
Jul. 31, 2014
Shinohara Press Service Co., Ltd., Funabashi-shi, Chiba, JP;
Inter-university Research Institute Corporation, Tsukuba-shi, Ibaraki, JP;
Kiyohiko Nohara, Chiba-shi, Chiba, JP;
Kiyohiko Nohara, Chiba, JP;
Masayuki Shinohara, Funabashi, JP;
Nobuyuki Kawabata, Funabashi, JP;
Hideyoshi Nakamura, Funabashi, JP;
Hitoshi Hayano, Tsukuba, JP;
Akira Yamamoto, Tsukuba, JP;
Takayuki Saeki, Tsukuba, JP;
Shigeki Kato, Tsukuba, JP;
Masashi Yamanaka, Tsukuba, JP;
SHINOHARA PRESS SERVICE CO., LTD., Funabashi-shi, Chiba, JP;
INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION, Tsubaki-shi, Ibaraki, JP;
Abstract
End-group components for superconducting accelerator cavity used in acceleration of charged particles are manufactured by subjecting pure niobium sheet materials to press forming composed mainly of flat-bottomed cylindrical drawing, preferably by simultaneously conducting control of slide velocity and/or its motion and control of tool die temperature and/or its distribution/gradient in the above press forming, further preferably by dynamically controlling blank holding force in accordance with the variation of flange area, flange thickness and deformed characteristics of niobium sheet materials during the press forming, more preferably by preparing an anisotropically shaped blank instead of a circular blank by use of servo press forming machine, servo-die cushion temperature control equipment, water-soluble solid coating type lubricant, and a tooling die.