Patents by Inventor Steven M. Shaffer

Steven M. Shaffer 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).

  • Apparatus for an active suspension system
    Patent number: 5947458
    Abstract: An apparatus for an active suspension system provides independent control of each adjustable spring rate mechanism. Ride height, spring rate, and oscillation control are achieved with the use of transducers that send signals to a controller. The controller receives the signals and responsively generates signals to adjust pressure and flow between an accumulator and the adjustable spring rate mechanism.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: September 7, 1999
    Assignee: Caterpillar Inc.
    Inventors: Larry K. Rhodes, Steven M. Shaffer
  • Non-metallic flow divider
    Patent number: 5848639
    Abstract: A heat exchanger includes a first header and tank assembly having an inlet port and an outlet port. First and second tubes are included, each tube in fluid communication with the first header and tank assembly and with the other tube. An elastomeric baffle is disposed in the first header and tank assembly to substantially prevent fluid flow between the inlet port and the outlet port except through the first and second tubes.
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: December 15, 1998
    Assignees: Caterpillar, Inc., Modine Manufacturing Company
    Inventors: Edward E. Flesburg, Raymond D. Stratton, Steven M. Shaffer, Douglas B. Penney