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. 29, 1991
Filed:
Apr. 12, 1990
Kenneth L Cramer, Jamestown, NY (US);
Jeffrey J Krause, Westlake, OH (US);
Allied-Signal Inc., Morristown, NJ (US);
Abstract
An electropneumatic subsystem of a vehicle compressed air braking system controls communication within the trailer control line, the trailer supply line, and the tractor spring brake delivery line. A valve operated by pilot pressure is installed in the trailer control line, and responds to the pressure level in the trailer supply line to open or close the trailer control line in accordance therewith, thereby providing a tractor protection function. A solenoid valve in the trailer supply line is actuated by an electronic control unit to open and close the trailer supply line to thereby perform a trailer spring brake control function and tractor protection function.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile