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. 10, 1983
Filed:
Mar. 03, 1981
Applicant:
Inventor:
Marc Bur, Grenoble, FR;
Assignee:
Merlin Gerin, Grenoble, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ; H01H / ; H01H / ;
U.S. Cl.
CPC ...
200 / ; 200 / ; 2001 / ; 335-8 ; 361115 ;
Abstract
A four-pole circuit breaker has an operating mechanism associated with one of the intermediate main poles, so as to take up an asymmetrical position with respect to the layout of the four poles. The mechanism has springs similar to those of a three-pole breaker. The transverse tie bar is common to the three main poles and is mechanically coupled to a kinetic linkage controlling the fourth pole, so as to bring about the closure of the contacts of the fourth pole before the closure of the contacts of the main poles upon closing of the breaker, in order to match the four-pole load torque to the three-pole motor torque of the mechanism.