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:
Jul. 24, 2012
Filed:
Jun. 30, 2009
Kenji Tsuchiya, Hitachi, JP;
Takashi Sato, Mito, JP;
Miki Yamazaki, Kashiwa, JP;
Masato Kobayashi, Hitachi, JP;
Hiroyuki Ozawa, Konosu, JP;
Kenji Tsuchiya, Hitachi, JP;
Takashi Sato, Mito, JP;
Miki Yamazaki, Kashiwa, JP;
Masato Kobayashi, Hitachi, JP;
Hiroyuki Ozawa, Konosu, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A vacuum switch has a fixed electrode, a movable electrode facing the fixed electrode, an insulating cylinder, end plates covering both axial ends of the insulating cylinder, a vacuum chamber internally accommodating the fixed electrode and the movable electrode, and a solid isolation resin molded on the outside of the vacuum chamber, first coil springs, each of which is disposed around the outer circumference of one end plate while touching the end plate and an end face of the insulating cylinder, and second coil springs, each of which is united to one of the first springs and disposed around the outer circumference of the insulating cylinder so as to cover the angular part of the end face of the insulating cylinder, and the end plates, the end faces of the insulating cylinder, and the first and second coil springs are electrically connected.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile