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, 1990
Filed:
Aug. 03, 1989
Applicant:
Inventors:
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
H02B / ;
U.S. Cl.
CPC ...
361131 ; 361341 ; 361385 ; 2001 / ;
Abstract
In a switch gear, such as a high-voltage enclosed switchboard and a vacuum load-break switch, of the type wherein items of electrical equipment including disconnecting devices and circuit-breaking devices are installed within a case, masses of a silicone gel are filled in compartments accommodating the electrical equipment instead of the sulfur hexafluoride used heretofore. An air space is left above the silicone gel in each compartment. This construction enables the provision of a safer switch gear of smaller size than heretofore.