Granted Patent
Utility
US 6,205,879 · App. 09/340,824
Helical and spur gear drive with double crowned pinion tooth surfaces and conjugated gear tooth surfaces
Inventors:
Faydor L. Litvin, Pin-Hao Feng, Sergey A Lagutin, Dennis P Townsend, Thomas M. Sep
Patented Case
View Patent ↗
Granted: Mar 27, 2001
Filed: Jun 28, 1999
Inventors
Faydor L. Litvin
Pin-Hao Feng
Sergey A Lagutin
Dennis P Townsend
Thomas M. Sep
Assignees (at issue)
Visteon Global Technologies, Inc.
The Board of Trustees of the University of Illinois
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.