Patents by Inventor Michel FREDERICK

Michel FREDERICK 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: 11583947
    Abstract: The present method for machining a part includes wire electro-discharge machining the part to create a recast layer, and then removing a zinc content of the recast layer without substantially altering the remainder of the initial composition make-up of the recast layer. The final composition make-up of the recast layer is substantially identical to the initial composition make-up except for the removed zinc content.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: February 21, 2023
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Nihad Ben Salah, Alain Bouthillier, Michel Frederick, Jean Fournier
  • Patent number: 11579582
    Abstract: A tool for validating a wire-electric-discharge-machining (wEDM) operation to be performed using a wEDM machine comprises a body including an engagement feature shaped to removably hold a validation coupon to be machined in the wEDM operation, the validation coupon sized larger than a size of a cut-out to be made in a part using the wEDM machine. A method of manufacturing the tool and a wEDM machine assembly are also provided.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: February 14, 2023
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Visal Ing, Michel Frederick, Ghislain Hardy
  • Patent number: 11235403
    Abstract: An electrical discharge machining (EDM) electrodes and associated methods are provided. An EDM electrode includes a holder rotatable about a rotation axis and a plurality of electrode elements attached to the holder and circumferentially arranged around the rotation axis. Respective positions of the electrode elements are radially adjustable relative to the rotation axis.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: February 1, 2022
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Michel Frederick, Greg Maccaul
  • Publication number: 20210101216
    Abstract: An electrical discharge machining (EDM) electrodes and associated methods are provided. An EDM electrode includes a holder rotatable about a rotation axis and a plurality of electrode elements attached to the holder and circumferentially arranged around the rotation axis. Respective positions of the electrode elements are radially adjustable relative to the rotation axis.
    Type: Application
    Filed: October 4, 2019
    Publication date: April 8, 2021
    Inventors: Michel FREDERICK, Greg MACCAUL
  • Publication number: 20210096527
    Abstract: A tool for validating a wire-electric-discharge-machining (wEDM) operation to be performed using a wEDM machine comprises a body including an engagement feature shaped to removably hold a validation coupon to be machined in the wEDM operation, the validation coupon sized larger than a size of a cut-out to be made in a part using the wEDM machine. A method of manufacturing the tool and a wEDM machine assembly are also provided.
    Type: Application
    Filed: September 27, 2019
    Publication date: April 1, 2021
    Inventors: Visal ING, Michel FREDERICK, Ghislain HARDY
  • Publication number: 20190126369
    Abstract: The present method for machining a part includes wire electro-discharge machining the part to create a recast layer, and then removing a zinc content of the recast layer without substantially altering the remainder of the initial composition make-up of the recast layer. The final composition make-up of the recast layer is substantially identical to the initial composition make-up except for the removed zinc content.
    Type: Application
    Filed: December 19, 2018
    Publication date: May 2, 2019
    Inventors: Nihad Ben Salah, Alain BOUTHILLIER, Michel FREDERICK, Jean FOURNIER
  • Patent number: 10189100
    Abstract: A method for machining a part includes wire electro-discharge machining the part, and then selectively reducing a zinc content of the residual recast layer left on a surface of the part, while otherwise leaving the recast layer substantially intact.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: January 29, 2019
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Nihad Ben Salah, Alain Bouthillier, Michel Frederick, Jean Fournier
  • Publication number: 20180112542
    Abstract: A rotor for a gas turbine engine is described and includes a disc and a plurality of blades. The disc has opposite first and second end surfaces spaced apart by a peripheral surface circumferentially extending about the rotor, and a plurality of slots defined in the peripheral surface and each having a length extending between a first slot opening in the first end surface and a second slot opening in the second end surface. Each of the slots has a tapered shape with at least one dimension of a cross-sectional shape of the slot reducing along at least a portion of the length of the slot. The at least one dimension at the first slot opening is greater than the at least one dimension at the second slot opening. The blades having a complimentary root are received in the slots of the rotor.
    Type: Application
    Filed: October 24, 2016
    Publication date: April 26, 2018
    Inventors: Alain BOUTHILLIER, Jean FOURNIER, Michel FREDERICK
  • Patent number: 8925201
    Abstract: A method for providing a disc of a bladed rotor for use in a gas turbine engine including the steps of determining the location of blade fixing slots to be formed on the disc to receive the roots of respective blades, determining a virtual profile of each slot on the disc, and forming, prior to the slots being formed in the disc, a narrow, axial pilot slot centrally of the virtual profile of each slot.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: January 6, 2015
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Michel Frédérick
  • Publication number: 20100325852
    Abstract: A method for providing a disc of a bladed rotor for use in a gas turbine engine including the steps of determining the location of blade fixing slots to be formed on the disc to receive the roots of respective blades, determining a virtual profile of each slot on the disc, and forming, prior to the slots being formed in the disc, a narrow, axial pilot slot centrally of the virtual profile of each slot.
    Type: Application
    Filed: June 29, 2009
    Publication date: December 30, 2010
    Inventor: Michel Frederick
  • Publication number: 20100025379
    Abstract: A method for machining a part includes wire electro-discharge machining the part, and then selectively reducing a zinc content of the residual recast layer left on a surface of the part, while otherwise leaving the recast layer substantially intact.
    Type: Application
    Filed: July 29, 2008
    Publication date: February 4, 2010
    Inventors: Nihad BEN SALAH, Alain BOUTHILLIER, Michel FREDERICK, Jean FOURNIER