Patents by Inventor Phillip B McGrath

Phillip B McGrath 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).

  • FILTER METHOD FOR ENGINE SPEED TO VEHICLE SPEED RATIOS
    Publication number: 20030004631
    Abstract: The present invention relates to a method for determining a maximum performance gear for an automobile when performing acceleration/deceleration maneuvers and a system for enhancing a motor vehicle's gear indicator capabilities. More specifically, the present invention relates to a method for determining the optimal gear for operation of a manual transmission by obtaining vehicle speed and engine speed data and filtering such data through a mathematical filter implemented by a microprocessor. The application of the filter that may be adjusted throughout vehicle usage to optimize gear and transmission operability.
    Type: Application
    Filed: June 29, 2001
    Publication date: January 2, 2003
    Inventors: Phillip B. McGrath, Yi Cheng
  • Filter method for engine speed to vehicle speed ratios
    Patent number: 6490517
    Abstract: The present invention relates to a method for determining a maximum performance gear for an automobile when performing acceleration/deceleration maneuvers and a system for enhancing a motor vehicle's gear indicator capabilities. More specifically, the present invention relates to a method for determining the optimal gear for operation of a manual transmission by obtaining vehicle speed and engine speed data and filtering such data through a mathematical filter implemented by a microprocessor. The application of the filter that may be adjusted throughout vehicle usage to optimize gear and transmission operability.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: December 3, 2002
    Assignee: DaimlerChrysler Corporation
    Inventors: Phillip B McGrath, Yi Cheng
  • Two-stroke engine lubrication
    Patent number: 5353753
    Abstract: Adjustment to the lubrication rate for a period of time after startup of a two-stroke internal combustion engine, wherein the magnitude of the adjustment over the period of time is determined from an estimate of the degree the lubricant has receded from the moving parts of the engine exposing the moving parts to an elevated potential for wear, and from an estimate of the rate at which lubricant in the engine may be recirculated to the moving parts to reduce the elevated potential.
    Type: Grant
    Filed: June 15, 1993
    Date of Patent: October 11, 1994
    Assignee: General Motors Corporation
    Inventors: Phillip B. McGrath, Kenneth J. Buslepp
  • Oil sensor systems and methods of qualitatively determining oil type and condition
    Patent number: 5274335
    Abstract: Disclosed is an oil sensor system having an oil sensor including two spaced apart electrodes, a triangular waveform means, a comparison means and a signal means. The oil system is used in situ (i.e., used directly in the engine) to determine the presence of two-stroke or four-stroke oil, or the occurrence of an engine malfunction, such as a leakage of antifreeze into the oil.
    Type: Grant
    Filed: April 6, 1992
    Date of Patent: December 28, 1993
    Assignee: General Motors Corporation
    Inventors: Su-Chee S. Wang, Han-Sheng Lee, Phillip B. McGrath, David R. Staley