Patents by Inventor Walter R. Johnson

Walter R. Johnson 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).

  • Printer calibration mechanism
    Patent number: 11922241
    Abstract: A printing system is disclosed.
    Type: Grant
    Filed: March 13, 2023
    Date of Patent: March 5, 2024
    Assignee: Ricoh Company, Ltd.
    Inventors: Mikel Stanich, Walter F. Kailey, Scott R. Johnson, Pallavi Premkumar, William Manchester
  • Liquid cooled electric motor frame
    Patent number: 5859482
    Abstract: Liquid cooled electric motors including stator frames having cast in place cooling conduits are described. In an exemplary embodiment, the conduit is arranged in a generally helical configuration and the stator frame is cast around the conduit so that the conduit is embedded within, and integral with, the frame. Spacer, or stabilizer, bars are engaged to the conduit and provide support for the conduit and facilitate maintaining the desired spacing between lengths of conduit and between the conduit and the frame wall. The stator frame with the cast in place cooling conduit has the advantages of a liquid cooled motor yet is believed to be lower cost than known liquid cooled motors. The frame also is believed to be less susceptible to corrosion and liquid leaks as compared to known liquid cooled motors.
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: January 12, 1999
    Assignee: General Electric Company
    Inventors: James R. Crowell, Matthew M. Doctor, Walter R. Johnson, Timothy K. Marker, Darrell R. Sontag, Ajoy K. Basu
  • Electrical insulating refractory composition
    Patent number: 4435693
    Abstract: Sheathed electrical heating elements containing MgO heat conductive, electrical insulating material having a high degree of calcination together with additives in the form of a clay and fumed silica to increase the electrical resistivity, density and flow properties.
    Type: Grant
    Filed: June 7, 1982
    Date of Patent: March 6, 1984
    Assignee: Combustion Engineering, Inc.
    Inventor: Walter R. Johnson
  • Electrical insulating refractory composition
    Patent number: 4415674
    Abstract: Sheathed electrical heating elements containing MgO heat conductive, electrical insulating material having an additive of fine particles of spherically shaped fused ZrO.sub.2 to increase the electrical resistivity and maintain favorable tap density and flow properties. The spherically shaped ZrO.sub.2 particles are formed by gravitationally separating the ZrO.sub.2 particles from ground fused zircon (ZrO.sub.2.SiO.sub.2).
    Type: Grant
    Filed: April 12, 1982
    Date of Patent: November 15, 1983
    Assignee: Combustion Engineering, Inc.
    Inventor: Walter R. Johnson
  • Push-button dial assembly for telephones
    Patent number: 4291201
    Abstract: A push-button assembly in which a cluster of push-buttons arranged in a circle or in a rectangular matrix, when depressed, engage a common plate positioned beneath the push-buttons. The plate is pivotally supported at its center by a spring which urges the plate towards the push-buttons. When any of the push-buttons is depressed it engages the plate at a point spaced from the central pivot. This causes the plate to tilt about its outer periphery, compressing the spring and actuating a common switch.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: September 22, 1981
    Assignee: American Telecommunications Corporation
    Inventors: Walter R. Johnson, Gary M. Petaja