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:
Dec. 14, 1999
Filed:
Feb. 03, 1997
Applicant:
Inventors:
Assignee:
Westinghouse Air Brake Co., Wilmerding, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F15D / ;
U.S. Cl.
CPC ...
138 41 ; 138 42 ; 138 44 ;
Abstract
Choke for connection to a fluid flow passage for controlling fluid flow through the passage in a predetermined direction. The choke has structure for attachment to the fluid passage. It also has an internal fluid flow passage, which has at least one constriction. One or more mesh filters are located in the internal fluid flow passage of the choke, upstream of the constriction, to remove debris from the fluid which would otherwise interfere with fluid flow through the orifice.