Granted Patent
Utility
US 5,590,797 · App. 08/438,499
Friction clutch mechanism for high capacity draft gear assembly and method of reconditioning draft gear with such friction clutch mechanism
Inventors:
James L. Duffy, David W. Daugherty, Jr., Wajih Kanjo, Rudi E. George
Patented Case
View Patent ↗
Granted: Jan 7, 1997
Filed: May 10, 1995
Inventors
James L. Duffy
David W. Daugherty, Jr.
Wajih Kanjo
Rudi E. George
Assignee (at issue)
Westinghouse Air Brake Co.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.