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:
Dec. 05, 1978
Filed:
Jan. 09, 1978
Applicant:
Inventor:
James M Lafferty, Schenectady, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
2001 / ; 200262 ; 200267 ;
Abstract
In high-current vacuum switch devices wherein the arc must transfer from the contacts to auxiliary electrodes, excessive contact erosion can be avoided by making this transfer occur as quickly as possible. Rapid transfer is facilitated by fabricating the contacts of refractory metal and the auxiliary electrodes of a material that is easily vaporized, consistent with chopping and recovery requirements, such as copper or iron.
Quick Actions:
Lafferty, James. (1978). High-current vacuum switch with reduced contact erosion (U.S. Patent No. 4128748). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4128748
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile