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:
May. 06, 2003
Filed:
Feb. 22, 2001
Applicant:
Inventor:
Vladimir Gutalj, Oberentfelden, CH;
Assignee:
Alstom, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H 3/370 ;
U.S. Cl.
CPC ...
H01H 3/370 ;
Abstract
The three-position, gas-insulated, metal-clad electrical switch inside a metal casing includes first and second break contacts, a fixed grounding contact, and a switching element that is movable in an axial direction to interconnect the break contacts. The first and second break contacts and the fixed grounding contact are superposed in the axial direction, and the switching element is moved by a drive rod which passes through the fixed grounding contact, thereby enabling the switching element to occupy each of the three switching positions including a grounding position in which it connects the first break contact to the fixed grounding contact.