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. 13, 1994
Filed:
Jul. 26, 1993
Applicant:
Inventors:
Michel Perret, Bourgoin-Jallieu, FR;
Denis Dufournet, Bron, FR;
Assignee:
GEC Alsthom T & D SA, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ; H01H / ;
U.S. Cl.
CPC ...
2001 / ; 2001 / ; 2001 / ;
Abstract
A puffer circuit-breaker comprises a first interrupting chamber (2), a second interrupting chamber (4) situated within the first interrupting chamber, and a stationary electric arcing contact (6) which extends inside the second interrupting chamber. The second interrupting chamber is movably mounted in the first interrupting chamber and is arranged to slide along the stationary contact. This arrangement provides good arc-extinction both at low electric current and at high electric current.