Preliminary Discharge Patents (Class 303/55)
  • Suppression control of cab signal automated brake application
    Patent number: 4971398
    Abstract: A suppression control device comprises a relay valve together with respective temporary and permanent diaphragm operated circuit breakers for governing suppression of a cab signal penalty brake application that can be used with either of two principal types of locomotive braking systems as well as being adapted to automatically adjust to changes in brake pipe pressure settings of 90 psi and 110 psi.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: November 20, 1990
    Assignee: General Signal Corporation
    Inventor: Robert S. Ingalls