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:
Jan. 18, 2005
Filed:
Jul. 16, 2003
Masanori Yoshihara, Imaichi, JP;
Toshiyuki Tsukada, Utsunomiya, JP;
Hideki Ohguri, Tochigi, JP;
Etsuo Saitou, Tochigi, JP;
Takeshi Isii, Oyama, JP;
Masanori Yoshihara, Imaichi, JP;
Toshiyuki Tsukada, Utsunomiya, JP;
Hideki Ohguri, Tochigi, JP;
Etsuo Saitou, Tochigi, JP;
Takeshi Isii, Oyama, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In such a case that a radial dimension of an outer circumference of a small-diameter strap ring of a magnetron is equal to 'Rs', a radial dimension of an inner circumference of a large-diameter strap ring is equal to 'Rs', a radius of a circumference which is inscribed to tip portions of anode vanes is equal to “Ra”, and a radius of a central flat portion of a magnetic piece, which is located in the vicinity of each of the anode vanes, is equal to “Rp”, the respective values of Ra, Rs, Rs, Rp are set in such a manner that the below-mentioned formulae (1) and (2) can be established:1.85≦()/2≦1.96  (1)  (2).