Patents by Inventor Ian M. Newbigging

Ian M. Newbigging has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Downshift inhibitor
    Patent number: 5471893
    Abstract: A downshift control for a manually shifted transmission (10) is provided. The control senses vehicle ground speed (100) and compares same to predetermined maximum values (REF.sub.1, REF.sub.2) at which certain ratios are allowed to downshift engaged. If vehicle speed exceeds the reference (OS>REF), a blocking plunger (216) assumes a position (216B, 216C) wherein selection of the prohibited ratio(s) is automatically mechanically blocked.
    Type: Grant
    Filed: December 2, 1993
    Date of Patent: December 5, 1995
    Assignee: Eaton Corporation
    Inventor: Ian M. Newbigging
  • Automatic range shift arrangement
    Patent number: 5263379
    Abstract: An automatic range shift control system for automatically controlling range section (14) shifting in an otherwise manually shifted range type compound transmission (10) is provided. A sensor (100) senses a value indicative of vehicle ground speed and provides a signal (100A) which is compared to a reference value. If the signal is greater than the reference, an actuator (96) is urged to engage the high speed range ratio and if the signal is less than the reference, the actuator is urged to engage the low speed range ratio.
    Type: Grant
    Filed: December 7, 1992
    Date of Patent: November 23, 1993
    Assignee: Eaton Corporation
    Inventors: Ian M. Newbigging, David E. Gibbons
  • Pneumatic control system for range type compound transmission
    Patent number: 4974474
    Abstract: A pneumatic control system for a range type compound transmission (10) is provided allowing preselection of a range section (14) shift by a range shift selector mechanism (98) and including an exhaust conduit control valve (118) which will prevent exhausting of one of the range actuator cylinder portions (120R, 120L) to atmosphere until the main transmission section (12) is shifted to a neutral condition.
    Type: Grant
    Filed: March 13, 1989
    Date of Patent: December 4, 1990
    Assignee: Eaton Corporation
    Inventor: Ian M. Newbigging