Patents by Inventor Jeffrey S. Rayce

Jeffrey S. Rayce 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).

  • EVENT-BASED DYNAMOMETER DUTY CYCLE
    Publication number: 20180156682
    Abstract: A method for testing a component includes mounting a first component on a dynamometer, and controlling the dynamometer to perform a dynamometer duty cycle event that includes exerting torque and speed over time on the first component that is substantially similar to torque and speed exerted over time on a second component during a vehicle testing event.
    Type: Application
    Filed: April 18, 2017
    Publication date: June 7, 2018
    Inventors: Brian R. Goodman, Jeffrey S. Rayce, Timothy A. Grzadzinski
  • Active damper for a planetary gear arrangement
    Patent number: 6974401
    Abstract: A planetary gear arrangement having at least three rotatable members with intermeshing gears and a primary torque path defined therein. At least one active friction damper is disposed between two of the planetary gear members, for example, a sun gear and a ring gear. The active damper is selectively operable to apply frictional engagement between the two members with which it is interconnected to establish a controlled secondary torque path therebetween. The active damper is effective to reduce gear lash changes between the gear members of a planetary assembly.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: December 13, 2005
    Assignee: General Motors Corporation
    Inventors: Michael Francis O'Leary, David Allen Gilbert, Jeffrey S. Rayce
  • ACTIVE DAMPER FOR A COUNTERSHAFT TRANSMISSION
    Publication number: 20020170370
    Abstract: A powertrain has a countershaft transmission and a throttle controlled engine. The transmission has an operator controlled friction clutch that is effective to connect and disconnect the transmission and the engine. The transmission also has coaxially aligned input and output shafts and a countershaft parallel therewith. The input shaft, countershaft, and output shaft are connected through meshing gears. In order to maintain the lash between the connecting gears, a selectively actuatable friction damper is disposed between the input shaft and the output shaft. The damper is actuated during transient events that would otherwise cause the gear meshes to separate resulting in noise.
    Type: Application
    Filed: May 21, 2001
    Publication date: November 21, 2002
    Inventors: David Allen Gilbert, Jeffrey S. Rayce, Michael F. O'Leary
  • Active damper for a countershaft transmission
    Patent number: 6477909
    Abstract: A powertrain has a countershaft transmission and a throttle controlled engine. The transmission has an operator controlled friction clutch that is effective to connect and disconnect the transmission and the engine. The transmission also has coaxially aligned input and output shafts and a countershaft parallel therewith. The input shaft, countershaft, and output shaft are connected through meshing gears. In order to maintain the lash between the connecting gears, a selectively actuatable friction damper is disposed between the input shaft and the output shaft. The damper is actuated during transient events that would otherwise cause the gear meshes to separate resulting in noise.
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: November 12, 2002
    Assignee: General Motors Corporation
    Inventors: David Allen Gilbert, Jeffrey S Rayce, Michael F O'Leary