Patents by Inventor Donald L. Wallace

Donald L. Wallace 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).

  • Publication number: 20230358791
    Abstract: An absence of voltage detection system has an isolation module connected to a voltage source to be detected an I/O accessory module connected to the isolation module wherein the I/O accessory module is configured to allow remote activation of the isolation module.
    Type: Application
    Filed: July 21, 2023
    Publication date: November 9, 2023
    Applicant: Panduit Corp.
    Inventors: Rachel M. Bugaris, Michael J. Ellis, Donald L. Wallace
  • Patent number: 11709187
    Abstract: An absence of voltage detection system has an isolation module connected to a voltage source to be detected an I/O accessory module connected to the isolation module wherein the I/O accessory module is configured to allow remote activation of the isolation module.
    Type: Grant
    Filed: August 3, 2021
    Date of Patent: July 25, 2023
    Assignee: Panduit Corp.
    Inventors: Rachel M. Bugaris, Michael J. Ellis, Donald L. Wallace
  • Publication number: 20220299547
    Abstract: An absence of voltage detection system has an isolation module connected to a voltage source to be detected an I/O accessory module connected to the isolation module wherein the I/O accessory module is configured to allow remote activation of the isolation module.
    Type: Application
    Filed: August 3, 2021
    Publication date: September 22, 2022
    Applicant: Panduit Corp.
    Inventors: Rachel M. Bugaris, Michael J. Ellis, Donald L. Wallace
  • Patent number: 9077133
    Abstract: Multi-position duckhead adapter plugs and associated moveable plug assemblies are disclosed that may be provided, for example, to couple an electrically powered device such as an information handling system to an AC mains power receptacle. A multi-position duckhead adapter plug may utilize electrically-conductive prongs configured and dimensioned for insertion into corresponding electrically-conducive sockets of a plug receptacle. The electrically-conductive prongs of an adapter plug may be mounted in a moveable plug assembly that is at least partially spherical and that is rotatably received in a stationary adapter housing. The moveable plug assembly may include one or more electrical contact detents and/or locking detents for effecting electrical interconnection and/or adjustable locking positioning within the stationary adapter housing.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: July 7, 2015
    Assignee: Dell Products LP
    Inventor: Donald L. Wallace
  • Publication number: 20140235079
    Abstract: Multi-position duckhead adapter plugs and associated moveable plug assemblies are disclosed that may be provided, for example, to couple an electrically powered device such as an information handling system to an AC mains power receptacle. A multi-position duckhead adapter plug may utilize electrically-conductive prongs configured and dimensioned for insertion into corresponding electrically-conducive sockets of a plug receptacle. The electrically-conductive prongs of an adapter plug may be mounted in a moveable plug assembly that is at least partially spherical and that is rotatably received in a stationary adapter housing. The moveable plug assembly may include one or more electrical contact detents and/or locking detents for effecting electrical interconnection and/or adjustable locking positioning within the stationary adapter housing.
    Type: Application
    Filed: February 20, 2013
    Publication date: August 21, 2014
    Applicant: Dell Products L.P.
    Inventor: Donald L. Wallace
  • Patent number: 8079852
    Abstract: A power adapter includes an adapter base defining a plug member channel immediately adjacent a first channel wall and a second channel wall that is oriented substantially perpendicular to the first channel wall. A power member connector extends into the first channel wall such that no part of the power member connector protrudes into the defined plug member channel. A ground member connector is located on the second channel wall and spaced apart from the power member channel. A plug member includes a plug base having a first plug wall and a second plug wall that is oriented substantially perpendicularly to the first plug wall. A power member is located on the first plug wall and a ground member is located on the second plug wall. The plug member is operable to be inserted into the plug member channel such that the power member enters the power member channel and electrically couples to the power member connector and the ground member engages the ground member connector.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: December 20, 2011
    Assignee: Dell Products L.P.
    Inventors: Charles D. Hood, III, Donald L. Wallace, Christopher A. Torres
  • Publication number: 20110053394
    Abstract: A power adapter includes an adapter base defining a plug member channel immediately adjacent a first channel wall and a second channel wall that is oriented substantially perpendicular to the first channel wall. A power member connector extends into the first channel wall such that no part of the power member connector protrudes into the defined plug member channel. A ground member connector is located on the second channel wall and spaced apart from the power member channel. A plug member includes a plug base having a first plug wall and a second plug wall that is oriented substantially perpendicularly to the first plug wall. A power member is located on the first plug wall and a ground member is located on the second plug wall. The plug member is operable to be inserted into the plug member channel such that the power member enters the power member channel and electrically couples to the power member connector and the ground member engages the ground member connector.
    Type: Application
    Filed: November 10, 2010
    Publication date: March 3, 2011
    Applicant: Dell Products L.P.
    Inventors: Charles D. Hood, III, Donald L. Wallace, Christopher A. Torres
  • Patent number: 7854617
    Abstract: A power adapter includes an adapter base defining a plug member channel between a first channel wall and a plurality of second channel walls that are oriented substantially perpendicularly to the first channel wall. A power member connector is located on the first channel wall. A ground member connector is located on at least one of the plurality of second channel walls. A plug member includes a plug base having a first plug wall and a plurality of second plug walls that are oriented substantially perpendicularly to the first plug wall, a power member located on the first plug wall, and a ground member is located on at least one of the second plug walls. The plug member is operable to be inserted into the plug member channel to engage the power member with the power member connector and the ground member with the ground member connector.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: December 21, 2010
    Assignee: Dell Products, L.P.
    Inventors: Charles D. Hood, III, Donald L. Wallace, Christopher A. Torres
  • Publication number: 20100151737
    Abstract: A power adapter includes an adapter base defining a plug member channel between a first channel wall and a plurality of second channel walls that are oriented substantially perpendicularly to the first channel wall. A power member connector is located on the first channel wall. A ground member connector is located on at least one of the plurality of second channel walls. A plug member includes a plug base having a first plug wall and a plurality of second plug walls that are oriented substantially perpendicularly to the first plug wall, a power member located on the first plug wall, and a ground member is located on at least one of the second plug walls. The plug member is operable to be inserted into the plug member channel to engage the power member with the power member connector and the ground member with the ground member connector.
    Type: Application
    Filed: December 12, 2008
    Publication date: June 17, 2010
    Applicant: DELL PRODUCTS L.P.
    Inventors: Charles D. Hood, III, Donald L. Wallace, Christopher A. Torres
  • Patent number: 4806479
    Abstract: Disclosed is a bulk starter medium for the propagation of a mother culture of an acid producing bacteria which medium contains a carbohydrate source, a nitrogen containing growth stimulant, a phage control agent and an essentially insoluble or temporarily insolubilized neutralizing agent to which has been added a foodgrade hydrocolloid stabilizing agent.
    Type: Grant
    Filed: May 13, 1985
    Date of Patent: February 21, 1989
    Assignee: Miles Inc.
    Inventors: Mary A. Kegel, Donald L. Wallace
  • Patent number: 4062443
    Abstract: A mixture of ferromagnetic material and non-ferromagnetic material is separated by first conveying the mixture to an inlet of a tubular member. An electro-magnetic field is then sequentially energized along the length of the tubular member from the inlet to an outlet to attract the ferromagnetic material away from the mixture into the inlet and impel the separated ferromagnetic material through the tubular member for subsequent discharge through the outlet.
    Type: Grant
    Filed: June 20, 1975
    Date of Patent: December 13, 1977
    Assignee: Henry Martina
    Inventors: Donald L. Wallace, Wallace P. Martina