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:
Apr. 19, 1994
Filed:
Sep. 30, 1992
Applicant:
Inventors:
Van Doan Pham, Meyzieu, FR;
Joseph Martin, Meyzieu, FR;
Assignee:
GEC Alsthom SA, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
2001 / ; 200145 ;
Abstract
The present invention relates to an ultra-high-tension interrupting chamber comprising a main chamber including an insulating case containing permanent contacts, arcing contacts and two closing resistors inserted by means of semi-moving 'make switch' device putting a 'first' one of the resistors into operation before the 'second' resistor. An auxiliary chamber is connected in parallel with the main chamber, which auxiliary chamber includes an insulating casing containing an opening varistor associated with a break switch having a slow-release opening mechanism situated inside the casing.