Patents by Inventor Peter Donald Waite

Peter Donald Waite 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).

  • Dual-function impeller for a rotary injector
    Patent number: 10465987
    Abstract: The dual-function impeller can be rotated in molten metal in a direction of rotation, as part of a rotary injector. The impeller can have a body having an axis, a plurality of blades circumferentially interspaced around an axis, and an aperture coinciding with the axis. The blades having both a radially extending portion facing the direction of rotation and collectively generating a radial flow component upon said rotation, and a slanted portion also facing the direction of rotation, inclined relative to a radial plane, and collectively generating an axial flow component directed away from the rotary injector upon said rotation.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: November 5, 2019
    Assignee: Rio Tinto Alcan International Limited
    Inventors: Joseph Langlais, Peter Donald Waite, Francis Breton, Serge Munger, Martin Beaulieu
  • Rotary injector and process of adding fluxing solids in molten aluminum
    Patent number: 9840754
    Abstract: A rotary injector comprising an elongated shaft having a proximal end and a distal end, and an impeller at the distal end of the elongated shaft, the elongated shaft and the impeller being collectively rotatable during operation around an axis of the shaft, the rotary injector being hollow and having an internal supply conduit extending along the shaft and across the impeller, the supply conduit having an inlet at the proximal end of the shaft, a main portion extending from the inlet to a discharge portion, the discharge portion extending to an axial outlet, the discharge portion having a narrow end connecting the main portion of the supply conduit and a broader end at the axial outlet.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: December 12, 2017
    Assignee: Rio Tinto Alcan International Limited
    Inventors: Joseph Langlais, Peter Donald Waite, Francis Breton, Serge Munger
  • Dual-Function Impeller for a Rotary Injector
    Publication number: 20160238319
    Abstract: The dual-function impeller can be rotated in molten metal in a direction of rotation, as part of a rotary injector. The impeller can have a body having an axis, a plurality of blades circumferentially interspaced around an axis, and an aperture coinciding with the axis. The blades having both a radially extending portion facing the direction of rotation and collectively generating a radial flow component upon said rotation, and a slanted portion also facing the direction of rotation, inclined relative to a radial plane, and collectively generating an axial flow component directed away from the rotary injector upon said rotation.
    Type: Application
    Filed: September 26, 2014
    Publication date: August 18, 2016
    Applicant: RIO TINTO ALCAN INTERNATIONAL LIMITED
    Inventors: Joseph Langlais, Peter Donald Waite, Francis Breton, Serge Munger, Martin Beaulieu
  • ROTARY INJECTOR AND PROCESS OF ADDING FLUXING SOLIDS IN MOLTEN ALUMINUM
    Publication number: 20160108496
    Abstract: A rotary injector comprising an elongated shaft having a proximal end and a distal end, and an impeller at the distal end of the elongated shaft, the elongated shaft and the impeller being collectively rotatable during operation around an axis of the shaft, the rotary injector being hollow and having an internal supply conduit extending along the shaft and across the impeller, the supply conduit having an inlet at the proximal end of the shaft, a main portion extending from the inlet to a discharge portion, the discharge portion extending to an axial outlet, the discharge portion having a narrow end connecting the main portion of the supply conduit and a broader end at the axial outlet.
    Type: Application
    Filed: May 23, 2014
    Publication date: April 21, 2016
    Inventors: Joseph Langlais, Peter Donald Waite, Francis Breton, Serge Munger
  • Impeller for a rotary injector
    Patent number: D713861
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: September 23, 2014
    Assignee: Rio Tinto Alcan International Limited
    Inventors: Joseph Langlais, Peter Donald Waite, Francis Breton, Serge Munger, Martin Beaulieu
  • Impeller for a rotary injector
    Patent number: D742427
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: November 3, 2015
    Assignee: RIO TINTO ALCAN INTERNATIONAL LIMITED
    Inventors: Joseph Langlais, Peter Donald Waite, Francis Breton, Serge Munger, Martin Beaulieu