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:
Jul. 26, 1977
Filed:
Jun. 14, 1976
Applicant:
Inventor:
Charles Horowitz, Niles, IL (US);
Assignee:
Sloan Valve Company, Franklin Park, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60T / ;
U.S. Cl.
CPC ...
303 / ; 137102 ; 1376275 ; 188195 ;
Abstract
An empty-load valve structure for a railroad air brake system include a load sensing valve for sensing the loaded condition of a railroad vehicle and a pressure control valve. In one position of the load sensing valve, full pressure is applied through the pressure control valve to the vehicle brakes. In a second position of the load sensing valve, less than full pressure is applied through the pressure control valve to the vehicle brakes. In all positions of the load sensing valve, a piston movable within the pressure control valve is balanced by opposing air pressure created forces.