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:
Mar. 09, 1993
Filed:
Sep. 23, 1991
Applicant:
Inventor:
Leonard Jackson, Newcastle upon Tyne, GB;
Assignee:
Northern Engineering Industries, plc, Newcastle upon Tyne, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05K / ;
U.S. Cl.
CPC ...
361379 ; 361383 ;
Abstract
An enclosure for electrical switchgear is a box like structure made up of side panels, front and rear panels and external panels. The panels define chimneys which are connected to the enclosure via apertures at their lower ends. Thus if the gas filled circuit breaker chamber explodes as a result of a fault developing, the enclosure is relieved of the resulting pressure generated by the expanding gases by venting to a ventilation system via the apertures and the chimneys.