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:
Nov. 20, 2018
Filed:
Feb. 16, 2016
Applicant:
Abb Schweiz Ag, Baden, CH;
Inventors:
Shawn Couceiro Fonseca, Newington, CT (US);
Dhirendra Tiwari, Farmington, CT (US);
Hardik Upadhyay, Meriden, CT (US);
Assignee:
ABB Schweiz AG, Baden, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H 9/34 (2006.01); H01H 73/18 (2006.01);
U.S. Cl.
CPC ...
H01H 9/342 (2013.01); H01H 73/18 (2013.01);
Abstract
A filter assembly for a circuit breaker arc chamber includes a coarse filter layer defining an outlet layer, having an upstream side and a downstream side opposite the upstream side, and a fine filter layer defining an inlet layer, disposed on the upstream side of the coarse filter layer.