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:
Jun. 19, 1990
Filed:
Nov. 14, 1988
Akihiko Kohanawa, Kanagawa, JP;
Fuji Electric Co., Ltd., Kanagawa, JP;
Abstract
There is disclosed an arc extinction chamber unit for assembly into a multipolar circuit breaker. This chamber unit is composed of arc extinction chambers provided one for each pole, and coupling arms for connecting the chambers to each other. The chambers and coupling arms are molded into one unitary body. Each chamber can contain a generated arc gas pressure, preventing the arc gas pressure being vented to the outer box of the circuit breaker, thereby reducing the stress on the outer box. The arc extinction chamber unit includes restraining arms which connect to the walls of the circuit breaker outer box, further strengthening the box. Each arc extinction chamber contains grooves in the inner wall for easy insertion of grids. The grids are configured with V-shaped indentations. The integral construction of the chamber units and coupling arms provides for assembly into the circuit breaker in a single assembly step.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile