Patents by Inventor James A. Crowson

James A. Crowson 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).

  • Bouncing ball apparatus
    Patent number: 6547567
    Abstract: An apparatus has a ball that bounces vertically on a vibrating piston. The system demonstrates the complex dynamics impact systems for education and research in dynamical systems theory and feedback control.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: April 15, 2003
    Assignee: The University of Arizona
    Inventors: Thomas Lange Vincent, Bradley Evan Paden, Randolph James Crowson, II, Tom Dragnes, David Brian Paden
  • Method of making an electrical current input to a pneumatic signal output transducer construction
    Patent number: 4489483
    Abstract: An electrical current input to a pneumatic signal output transducer construction wherein the signal is substantially proportional to the current and is generated by a pneumatic relay of the construction that is controlled by an electrical current receiving unit of the construction, the current receiving unit comprising a fixed electrical coil that is adapted to have the current flow therethrough and a movable armature disposed in the coil and being operatively interconnected to the relay to control the relay in relation to the position of the armature relative to the coil.
    Type: Grant
    Filed: June 13, 1983
    Date of Patent: December 25, 1984
    Assignee: Robertshaw Controls Company
    Inventor: James A. Crowson
  • Pneumatic relay controlled transducer construction
    Patent number: 4401263
    Abstract: An electrical current input to a pneumatic signal output transducer construction wherein the signal is substantially proportional to the current and is generated by a pneumatic relay of the construction that is controlled by an electrical current receiving unit of the construction, the current receiving unit comprising a fixed electrical coil that is adapted to have the current flow therethrough and a movable armature disposed in the coil and being operatively interconnected to the relay to control the relay in relation to the position of the armature relative to the coil.
    Type: Grant
    Filed: May 20, 1981
    Date of Patent: August 30, 1983
    Assignee: Robertshaw Controls Company
    Inventor: James A. Crowson