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. 24, 2005
Filed:
Mar. 12, 2003
Robert Lyn Moffitt, Palm Bay, FL (US);
John P. Cooke, Indiatlantic, FL (US);
Kelly Gatson Swartz, Indialantic, FL (US);
Robert Lyn Moffitt, Palm Bay, FL (US);
John P. Cooke, Indiatlantic, FL (US);
Kelly Gatson Swartz, Indialantic, FL (US);
GE Harris Railway Electronics, LLC, Melbourne, FL (US);
Abstract
A pneumatic braking method and system for a vehicle is provided. The system includes a brake cylinder, a reservoir, a latching exhaust valve (LEV) movable between an open position and closed position and fluidly connected between the reservoir and the brake cylinder. The LEV includes a first solenoid having a first pilot fluidly connected to the reservoir and a second solenoid having a second pilot fluidly connected to the reservoir wherein the pilots are configured to be controlled electronically and pneumatically, and are selectable between electronic and pneumatic control based on vehicle operating requirements. The solenoids are configured to be piloted with pneumatic pressure from the reservoir and an electronic controller that includes a release on failure circuit. The release on failure circuit is configured to control the LEV during at least one of a loss of power to the braking system and a failure of the electronic controller.