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. 10, 1977
Filed:
Aug. 02, 1976
Applicant:
Inventor:
Willard P Spalding, Penn Hills, PA (US);
Assignee:
Westinghouse Air Brake Company, Wilmerding, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F16D / ;
U.S. Cl.
CPC ...
188203 ; 1881 / ; 1881 / ;
Abstract
This invention relates to a pneumatically-applied spring-released brake assembly for each individual wheel of a railway vehicle truck, wherein the brake assembly comprises a pair of levers that so cooperate with non-self-locking threads formed on a nut and a screw member as to provide a high mechanical advantage or multiplication of the braking force transmitted from a piston to a brake shoe thereby enabling a substantial reduction in the diameter of the piston and therefore of the size of the brake assembly from that of such assemblies heretofore necessary to transmit the same braking force to the shoe.