Patents by Inventor Wallace K Johnson

Wallace K 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).

  • Patent number: 6558188
    Abstract: An electrical connector assembly has a flexible circuit with a first end portion, a second end portion, a first surface, and a second surface. A plurality of conductors extend between the first end portion and the second end portion within the circuit. A first connector assembly is attached to the circuit first end portion. The first connector assembly has a first connector electrically connected to at least one of the plurality of conductors, a first plate substantially encompassing the first connector and located adjacent the circuit first surface, and a second plate located adjacent the circuit second surface and opposite the first plate. The first plate and the second plate are mechanically coupled.
    Type: Grant
    Filed: June 22, 2000
    Date of Patent: May 6, 2003
    Assignee: Hewlett Packard Development Company, L.P.
    Inventors: Paul J. Mantey, Wallace K Johnson
  • Patent number: 6556449
    Abstract: The present invention is directed to a network chassis having a system backplane board, a subassembly backplane board, and at least one connector disposed on each of the system backplane board and subassembly backplane board for electrically connecting the system backplane board to the subassembly backplane board. The chassis includes a mounting mechanism for rotatably coupling the system backplane board to the chassis and defining a path of rotation therefor, and an ejection mechanism mounted to the system backplane board to unseat the connector of the system backplane board from the connector of the subassembly backplane board. The ejection mechanism selectively exerts a force against the chassis that is directed linearly outwardly from and perpendicularly to the system backplane board. The ejection mechanism further comprises a fastener for releasably engaging the system backplane board to the chassis.
    Type: Grant
    Filed: August 1, 2001
    Date of Patent: April 29, 2003
    Assignee: Hewlett Packard Development Company, L.P.
    Inventors: Brandon A Rubenstein, Wallace K Johnson, Bradley E. Clements
  • Publication number: 20030026080
    Abstract: The present invention is directed to a network chassis having a system backplane board, a subassembly backplane board, and at least one connector disposed on each of the system backplane board and subassembly backplane board for electrically connecting the system backplane board to the subassembly backplane board. The chassis includes a mounting mechanism for rotatably coupling the system backplane board to the chassis and defining a path of rotation therefor, and an ejection mechanism mounted to the system backplane board to unseat the connector of the system backplane board from the connector of the subassembly backplane board. The ejection mechanism selectively exerts a force against the chassis that is directed linearly outwardly from and perpendicularly to the system backplane board. The ejection mechanism further comprises a fastener for releasably engaging the system backplane board to the chassis.
    Type: Application
    Filed: August 1, 2001
    Publication date: February 6, 2003
    Inventors: Brandon A. Rubenstein, Wallace K. Johnson, Bradley E. Clements
  • Publication number: 20030026067
    Abstract: The present invention is directed to a network chassis having a system backplane board, a subassembly backplane board, and at least one connector disposed on each of the system backplane board and subassembly backplane board for electrically connecting the system backplane board to the subassembly backplane board. The chassis includes a mounting mechanism for rotatably coupling the system backplane board to the chassis and defining a path of rotation therefor, and an ejection mechanism mounted to the system backplane board to unseat the connector of the system backplane board from the connector of the subassembly backplane board. The ejection mechanism selectively exerts a force against the chassis that is directed linearly outwardly from and perpendicularly to the system backplane board. The ejection mechanism further comprises a fastener for releasably engaging the system backplane board to the chassis.
    Type: Application
    Filed: July 31, 2001
    Publication date: February 6, 2003
    Inventors: Brandon Rubenstein, Wallace K. Johnson, Bradley E. Clements
  • Patent number: 5852462
    Abstract: An electrophotographic laser printing process using dry low gloss toner formulations for producing either low gloss images or high gloss images. In an instance when a low gloss image is produced, the process selects a low gloss paper, and all other parameters of the process of printing low gloss images are consistent with known parameters for the production of electrophotographic low gloss images using dry toner formulations. In order to produce a high gloss image using a low gloss toner formulation, the method involves selecting a high gloss media, if available, from a media source and reducing the feed speed of the media through the process. Additionally, the fuser roller temperature is increased to ensure maximum fixing and fusing of the toner to produce a single voidless plane of toner on top of the media which exhibits a high reflective index and results in less light scattering at the surface of the toner.
    Type: Grant
    Filed: March 7, 1996
    Date of Patent: December 22, 1998
    Assignee: Hewlett-Packard Company
    Inventors: Michael B. Lloyd, Wallace K. Johnson
  • Patent number: 5539503
    Abstract: A liquid toner cartridge is provided with internal rotary agitation. The cartridge employs a magnetically-coupled drive, which requires no seals, to provide power to an internal pump and agitation system. The magnetically-coupled drive shaft falls in line with the pump and agitation device. Venting is through a single liquid supply/return line. When the line empties between pumping cycles, the cartridge can vent to the atmosphere. During pumping, a flexible tank, external to the liquid toner cartridge, partially collapses, but returns to original shape when toner has returned at the end of each development cycle. At this point, the supply/return line is again opened to the atmosphere for venting. This action always maintains space for the rotary agitation system.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: July 23, 1996
    Assignee: Hewlett-Packard Company
    Inventor: Wallace K. Johnson