Patents by Inventor Douglass A. Demers

Douglass A. Demers 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: 10420200
    Abstract: An automated plasma cutting system is provided that includes a positioning system mounted to a support, an automated plasma arc torch mounted to the positioning system, and at least one power supply operatively connected to the automated plasma arc torch. The power supply may provide electrical power and fluid flow to the automated plasma arc torch for operation. The system further includes a controller in communication with the automated plasma arc torch and the power supply, and an auxiliary plasma arc torch operatively connected to the power supply, wherein the power supply provides electrical power and fluid flow to both the automated plasma arc torch and the auxiliary plasma arc torch. The automated plasma arc torch may process the workpiece to generate a set of features, while the auxiliary plasma arc torch may process/cut a residual framework of the workpiece remaining after formation of the set of features.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: September 17, 2019
    Assignee: Victor Equipment Company
    Inventors: Roger Lambert, David A. Tatham, Michael Sawchik, Douglass A. Demers, Jake Brandis, Michael Wolfinger, Nakhleh Hussary, Dirk Ott, Christopher Conway, Daniel Barnett, Thierry Renault, Kevin Horner-Richardson
  • Publication number: 20160023295
    Abstract: An automated plasma cutting system is provided that includes a positioning system mounted to a support, an automated plasma arc torch mounted to the positioning system, and at least one power supply operatively connected to the automated plasma arc torch. The power supply may provide electrical power and fluid flow to the automated plasma arc torch for operation. The system further includes a controller in communication with the automated plasma arc torch and the power supply, and an auxiliary plasma arc torch operatively connected to the power supply, wherein the power supply provides electrical power and fluid flow to both the automated plasma arc torch and the auxiliary plasma arc torch. The automated plasma arc torch may process the workpiece to generate a set of features, while the auxiliary plasma arc torch may process/cut a residual framework of the workpiece remaining after formation of the set of features.
    Type: Application
    Filed: July 27, 2015
    Publication date: January 28, 2016
    Inventors: Roger Lambert, David A. Tatham, Michael Sawchik, Douglass A. Demers, Jake Brandis, Michael Wolfinger, Nakhleh Hussary, Dirk Ott, Christopher Conway, Daniel Barnett, Thierry Renault, Kevin Horner-Richardson
  • Patent number: 6773304
    Abstract: A tamper resistant pin connection for use in a plasma arc cutting apparatus is provided that comprises a plurality of locking fingers within a hollow internal channel of a housing that secure a negative lead gas carrying pin within the housing. The pin comprises a first collar with a shoulder disposed thereon, and accordingly, the locking fingers engage the shoulder to secure the pin within the housing. The pin further comprises a second collar that blocks access to the locking fingers through a first portion of the hollow internal channel such that the locking fingers cannot be accessed to disengage the pin. Further, the pin is recessed within a second portion of the hollow internal channel to prevent further access to the pin for a tamper resistant pin connection.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: August 10, 2004
    Assignee: Thermal Dynamics Corporation
    Inventors: Christopher J. Conway, Fred Rogers, Darrin H. MacKenzie, Douglass A. Demers
  • Patent number: 6713711
    Abstract: A quick disconnect for use in a plasma arc torch is provided that comprises a plug housing and a mating socket housing, a locking ring disposed around the plug housing secures the plug housing to the socket housing. A negative lead gas carrying pin is disposed within the plug housing, and a mating main power socket is disposed within the socket housing for the purpose of conducting both gas and electricity from a power supply to a plasma arc torch. Further, the negative lead gas carrying pin and mating main power socket are positioned off-center in order to provide additional volume for a plurality of signal conductors disposed within each housing, along with a pilot return conductor. Additionally, both the plug housing and the socket housing define a D-configuration in order to properly align the housings and conductors disposed therein, among other novel features of the present invention.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: March 30, 2004
    Assignee: Thermal Dynamics Corporation
    Inventors: Christopher J. Conway, Fred Rogers, Darrin H. MacKenzie, Douglass A. Demers, Stewart Trent Adams, Joseph P. Jones
  • Publication number: 20030100208
    Abstract: A quick disconnect for use in a plasma arc torch is provided that comprises a plug housing and a mating socket housing, wherein a locking ring disposed around the plug housing secures the plug housing to the socket housing. A negative lead gas carrying pin is disposed within the plug housing, and a mating main power socket is disposed within the socket housing for the purpose of conducting both gas and electricity from a power supply to a plasma arc torch. Further, the negative lead gas carrying pin and mating main power socket are positioned off-center in order to provide additional volume for a plurality of signal conductors disposed within each housing, along with a pilot return conductor. Additionally, both the plug housing and the socket housing define a D-configuration in order to properly align the housings and conductors disposed therein, among other novel features of the present invention.
    Type: Application
    Filed: November 9, 2001
    Publication date: May 29, 2003
    Inventors: Christopher J. Conway, Fred Rogers, Darrin H. MacKenzie, Douglass A. Demers, Stewart Trent Adams, Joseph P. Jones
  • Publication number: 20030092318
    Abstract: A tamper resistant pin connection for use in a plasma arc cutting apparatus is provided that comprises a plurality of locking fingers within a hollow internal channel of a housing that secure a negative lead gas carrying pin within the housing. The pin comprises a first collar with a shoulder disposed thereon, and accordingly, the locking fingers engage the shoulder to secure the pin within the housing. The pin further comprises a second collar that blocks access to the locking fingers through a first portion of the hollow internal channel such that the locking fingers cannot be accessed to disengage the pin. Further, the pin is recessed within a second portion of the hollow internal channel to prevent further access to the pin for a tamper resistant pin connection.
    Type: Application
    Filed: November 9, 2001
    Publication date: May 15, 2003
    Inventors: Christopher J. Conway, Fred Rogers, Darrin H. MacKenzie, Douglass A. Demers