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:
May. 11, 1993
Filed:
May. 28, 1991
James A Wood, Spartanburg, SC (US);
Richard J Mazur, Greer, SC (US);
John W Drake, Cincinnati, OH (US);
Westinghouse Air Brake Company, Wilmerding, PA (US);
Abstract
An analog service brake response enhancing circuit including an intelligent filter circuit for removing voltage transients appearing on input feedback signals, a friction brake request circuit for receiving input brake command request signals, a force motor calculating circuit for calculating the degree of service brake which is to be applied on a railway vehicle, and service brake control apparatus for controlling whether an application or a release mode of braking should be instituted on the vehicle and for accelerating the operation of an analog valve device to produce a full service brake condition for a predetermined time period.