US 6,981,599 B2
High capacity shear mechanism
Curtiss A. Grau, Duncan, S.C. (US); and Howard R. Sommerfeld, Oak Forest, Ill. (US)
Assigned to Westinghouse Air Brake Technologies Corporation, Wilmerding, Pa. (US)
Filed on Sep. 30, 2003, as Appl. No. 10/675,538.
Claims priority of provisional application 60/493754, filed on Aug. 08, 2003.
Prior Publication US 2005/0029215 A1, Feb. 10, 2005
Int. Cl. B61G 1/00 (2006.01)
U.S. Cl. 213—62R 10 Claims
OG exemplary drawing
 
1. An emergency release mechanism for a railway drawbar comprising:
a) a stud threaded at first and second ends and having an unthreaded intermediate body having a flat radial surface adjacent the first threaded end, said stud passing through an opening in a drawbar body with said first threaded end screwed into a release rail; and
b) a fastener screwed to a second threaded end to hold said release rail proximate to said drawbar body, wherein a recess is formed in said release rail around a threaded opening in said release rail to receive said first threaded end of said stud, said recess having a flat surface being wider than a width of said intermediate unthreaded body of said stud and being abuttingly engageable with the flat radial surface of the body of said threaded stud.