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. 31, 2012
Filed:
Jul. 06, 2011
Howard Sommerfeld, Oak Forest, IL (US);
Jonathon Marlow, Hobart, IN (US);
Michael J. Moriarity, Lansing, MI (US);
Wajih Kanjo, Lockport, IL (US);
David Meyer, River Forest, IL (US);
Bradley Anderson, Des Plaines, IL (US);
Michael Ring, Saint John, IN (US);
Howard Sommerfeld, Oak Forest, IL (US);
Jonathon Marlow, Hobart, IN (US);
Michael J. Moriarity, Lansing, MI (US);
Wajih Kanjo, Lockport, IL (US);
David Meyer, River Forest, IL (US);
Bradley Anderson, Des Plaines, IL (US);
Michael Ring, Saint John, IN (US);
Wabtec Holding Corp., Wilmerding, PA (US);
Abstract
A parking brake assembly for a railway car includes a ratchet mounted for rotation on a threaded piston rod of a brake actuator and a holding pawl engageable with the ratchet for maintaining a push rod of the parking brake assembly to apply braking force when the air pressure is lost in the brake pipe and releasing the push rod to accordingly release the braking force when the supply of air pressure in the brake pipe is restored. An operating lever and a cylinder connected thereto are provided for selectively rotating the holding pawl. Valve is provided for supplying air pressure to and evacuating it from the cylinder. Release mechanism is provided for manually releasing the braking force. The parking brake assembly is employed with either truck-mounted or carbody-mounted braking system.