Patents by Inventor Randy Johnston

Randy Johnston 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).

  • Ink supply reservoir
    Patent number: 8857933
    Abstract: A reservoir of an ink supply system is described.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: October 14, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Kevin Campion, Aaron Barclay, Chad Beery, Randy Johnston
  • INK SUPPLY RESERVOIR
    Publication number: 20120019575
    Abstract: A reservoir of an ink supply system is described.
    Type: Application
    Filed: March 8, 2010
    Publication date: January 26, 2012
    Inventors: Kevin Campion, Aaron Barclay, Chad Beery, Randy Johnston
  • Ink jet printer
    Patent number: 7866810
    Abstract: An improved large-format inkjet printer that is capable of providing more efficient and higher quality printing on a variety of print media, including for example, paper, fabric, corrugated media, and plywood. The improved printer provides improvements to the platen assembly, rail assembly, service station assembly, printhead assembly and vacuum assembly to provide improved printing capability. In addition the printer provides a table assembly that can be integrated into the platen assembly to provide a secure and flush surface for supporting various types of print media.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: January 11, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Kevin Campion, Aaron Barclay, Chad Beery, Christian Vasbo, Corrine Ruether, Joe Kubes, Rick Bigaouette, Randy Johnston, Pete Ladas, Pete Schmidt, John Knaack
  • Ink jet printer
    Publication number: 20080192075
    Abstract: An improved large-format inkjet printer that is capable of providing more efficient and higher quality printing on a variety of print media, including for example, paper, fabric, corrugated media, and plywood. The improved printer provides improvements to the platen assembly, rail assembly, service station assembly, printhead assembly and vacuum assembly to provide improved printing capability. In addition the printer provides a table assembly that can be integrated into the platen assembly to provide a secure and flush surface for supporting various types of print media.
    Type: Application
    Filed: February 9, 2007
    Publication date: August 14, 2008
    Inventors: Kevin Campion, Aaron Barclay, Chad Beery, Christian Vasbo, Corrine Ruether, Joe Kubes, Rick Bigaouette, Randy Johnston, Pete Ladas, Pete Schmidt, John Knaack
  • Composite seal for rotary cone rock bits
    Patent number: 5362073
    Abstract: An elastomeric o-ring rock bit seal is disclosed with two or more integrally bonded elastomers or phenolic type materials joined together to form the seal. The dynamic sealing face adjacent the journal bearing is fabricated from an elastomer/phenolic engineered specifically for wear resistance. The bulk of the seal adjacent the static seal retention cavity typically formed in the rotary cone is molded from an elastomer engineered specifically for precise control of the seal contact force adjacent the dynamic seal face when the seal is compressed against the dynamic face by the seal retention cavity in the cone.
    Type: Grant
    Filed: October 21, 1992
    Date of Patent: November 8, 1994
    Assignee: Smith International, Inc.
    Inventors: Robert G. Upton, Michael F. Hooper, Gary Portwood, Jerry Pyka, Randy Johnston, Robert Chambers
  • Composite seal for rotary cone rock bits
    Patent number: RE36452
    Abstract: An elastomeric o-ring rock bit seal is disclosed with two or more integrally bonded elastomers or phenolic type materials joined together to form the seal. The dynamic sealing face adjacent the journal bearing is fabricated from an elastomer/phenolic engineered specifically for wear resistance The bulk of the seal adjacent the static seal retention cavity typically formed in the rotary cone is molded from an elastomer engineered specifically for precise control of the seal contact force adjacent the dynamic seal face when the seal is compressed against the dynamic face by the seal retention cavity in the cone.
    Type: Grant
    Filed: July 8, 1996
    Date of Patent: December 21, 1999
    Assignee: Smith International, Inc.
    Inventors: Robert G. Upton, Michael E. Hooper, Jerry Pyka, Robert Chambers, Gary Portwood, Randy Johnston