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:
Oct. 23, 2001
Filed:
Aug. 04, 2000
Daniel G. Scott, Pittsburgh, PA (US);
Mark S. Krampitz, Hunker, PA (US);
Westinghouse Air Brake Company, Wilmerding, PA (US);
Abstract
An empty/load brake control system mountable on a sprung and an unsprung member of a railway car and disposed between the car brake control valve and brake cylinder for adjusting the brake cylinder pressure during a brake application according to the car load condition. Such system includes an empty/load sensor valve device and a sensor arm coupled to a sensor cable whose movement is controlled by a sprung member and a terminal member disposed on an end of sensor cable, in contact with sprung member so that any downward movement of sprung member forces such terminal member in a similar downward direction and similarly pulls on the sensor cable. A piston, under pressure, urges the sensor arm to rotate and retract sensor cable but must overcome resistance of a spring. The system includes a load proportional valve.