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:
Aug. 14, 2001
Filed:
Jul. 31, 1998
David H. Halvorson, Cedar Rapids, IA (US);
Dennis W. Sutherland, Marion, IA (US);
Westinghouse Air Brake Technologies Corporation, Wilmerding, PA (US);
Abstract
An electronic air brake control system which utilizes an inter-car distance measuring sensor for determining the distance between adjacent railcars and thereby determining the coupling slack and also determining the performance and response of railcar brake applications. The system providing the capability of controlling the slack to increase or decrease slack at a controlled rate and further for monitoring and regulating the amount of pneumatic brake signal required to produce a predetermined level of wheel resistance, together with a system and method for applying railcar brakes when predetermined characteristics relating to distance between cars and rate of change of distance between cars meets predetermined characteristics.