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:
Sep. 16, 2003
Filed:
Jul. 07, 1999
Paul J. Kettle, Jr., Ijamsville, MD (US);
Richard S. Klemanski, Walkersville, MD (US);
Westinghouse Air Brake Technologies Corporation, Wilmerding, PA (US);
Abstract
A flow adapter for measuring the rate at which air flows into the brake pipe. The adapter includes a housing, a flow valve and a transducer. The primary passage of the housing contains a primary orifice and a secondary passage contains a secondary orifice. The flow valve is disposed within a supplemental passage. When the rate of air flowing from the input passage into the input chamber is less than or equal to a predetermined amount, the flow valve closes the supplemental passage. When the flow rate into the input chamber is greater than the predetermined amount, the flow valve opens the passage to an extent determined by the magnitude of the flow rate. This allows air to flow through the supplemental passage, in addition to that flowing through the primary passage. The transducer generates a signal proportional to the difference in pressure between input and output chambers.