Granted Patent
Utility
US 5,452,814 · App. 08/391,484
Variable angle friction clutch mechanism for a draft gear assembly
Inventors:
Walter H. Merker, Jr., Howard Sommerfeld
Patented Case
View Patent ↗
Granted: Sep 26, 1995
Filed: Feb 21, 1995
Inventors
Walter H. Merker, Jr.
Howard Sommerfeld
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.