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. 11, 1984
Filed:
Sep. 30, 1982
Kabushiki Kaisha Meidensha, Tokyo, JP;
Abstract
A vacuum interrupter has a capacity of breaking high voltage and large electric current, and excellent anti-welding characteristics, and prevents generation of harmful surges by current chopping and reignitions, and particularly prevents surges by multi-reignition and three-phase simultaneous breaking caused by the multi-reignition. The vacuum interrupter comprises a pair of electrodes (5a, 6a) which can close or separate from each other within an electric insulating hermetic vacuum vessel (4), each electrode (5a, 6a, 15 and 28) is made of a metallic material of a mean vapor pressure, the boiling point of the metallic material being 2700 to 3300K. (2427.degree. to 3027.degree. C.), such as, for example, chromium, or a chromium alloy including a content of more than 90% chromium.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile