Patents by Inventor Thach Du

Thach Du 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: 20260233582
    Abstract: A dock fan assembly for exchanging air from a trailer, having a trailer door opening, located at a dock having a dock door opening, which is aligned with the trailer door opening. The dock fan assembly has at least one fan that forms a circulation air flow path by flowing ambient air into the trailer opening to affect an exchange of ambient air for the trailer air. The duration of the flow can be a function of time and/or temperature. The completion of the air exchange can be indicated. More than one fan may be used. In one arrangement, a first fan can flow air into the trailer opening while a second fan can withdraw air from the trailer opening.
    Type: Application
    Filed: January 13, 2026
    Publication date: August 13, 2026
    Inventors: Daniel Rice, Thach Du, Dwayne Peyton, Monica Moreno, Mina Messiha
  • Publication number: 20250157285
    Abstract: A brushless motor system for use with a mechanical reel gaming machine is provided. The brushless motor system includes a reel hub and a reel frame rotationally attached to a center shaft of the reel hub. The brushless motor system also includes a permanent magnet (PM) rotor attached to the reel frame and including a plurality of permanent magnets attached to the PM rotor. The brushless motor system further includes a stator including stator coils attached to the reel hub, the plurality of stator coils are mounted parallel to a surface of the PM rotor at a separation distance. The stator causes the PM rotor to rotate during activation of the stator without direct contact between the stator and the rotor, thereby causing the display of one or more symbols of the plurality of symbols during the wagering game based on the rotation.
    Type: Application
    Filed: January 16, 2025
    Publication date: May 15, 2025
    Inventors: William Lamb, Thach Du, Charles A. Liter
  • Patent number: 12230093
    Abstract: A brushless motor system for use with a mechanical reel gaming machine is provided. The brushless motor system includes a reel hub and a reel frame rotationally attached to a center shaft of the reel hub. The brushless motor system also includes a permanent magnet (PM) rotor attached to the reel frame and including a plurality of permanent magnets attached to the PM rotor. The brushless motor system further includes a stator including stator coils attached to the reel hub, the plurality of stator coils are mounted parallel to a surface of the PM rotor at a separation distance. The stator causes the PM rotor to rotate during activation of the stator without direct contact between the stator and the rotor, thereby causing the display of one or more symbols of the plurality of symbols during the wagering game based on the rotation.
    Type: Grant
    Filed: November 27, 2023
    Date of Patent: February 18, 2025
    Assignee: Aristocrat Technologies Australia Pty Limited
    Inventors: William Lamb, Thach Du, Charles A. Liter
  • Publication number: 20240096165
    Abstract: A brushless motor system for use with a mechanical reel gaming machine is provided. The brushless motor system includes a reel hub and a reel frame rotationally attached to a center shaft of the reel hub. The brushless motor system also includes a permanent magnet (PM) rotor attached to the reel frame and including a plurality of permanent magnets attached to the PM rotor. The brushless motor system further includes a stator including stator coils attached to the reel hub, the plurality of stator coils are mounted parallel to a surface of the PM rotor at a separation distance. The stator causes the PM rotor to rotate during activation of the stator without direct contact between the stator and the rotor, thereby causing the display of one or more symbols of the plurality of symbols during the wagering game based on the rotation.
    Type: Application
    Filed: November 27, 2023
    Publication date: March 21, 2024
    Inventors: William Lamb, Thach Du, Charles A. Liter
  • Patent number: 11887429
    Abstract: A brushless motor system for use with a mechanical reel gaming machine is provided. The brushless motor system includes a reel hub and a reel frame rotationally attached to a center shaft of the reel hub. The brushless motor system also includes a permanent magnet (PM) rotor attached to the reel frame and including a plurality of permanent magnets attached to the PM rotor. The brushless motor system further includes a stator including stator coils attached to the reel hub, the plurality of stator coils are mounted parallel to a surface of the PM rotor at a separation distance. The stator causes the PM rotor to rotate during activation of the stator without direct contact between the stator and the rotor, thereby causing the display of one or more symbols of the plurality of symbols during the wagering game based on the rotation.
    Type: Grant
    Filed: July 8, 2022
    Date of Patent: January 30, 2024
    Assignee: ARISTOCRAT TECHNOLOGIES AUSTRALIA PTY LIMITED
    Inventors: William Lamb, Thach Du, Charles A. Liter
  • Publication number: 20220343720
    Abstract: A brushless motor system for use with a mechanical reel gaming machine is provided. The brushless motor system includes a reel hub and a reel frame rotationally attached to a center shaft of the reel hub. The brushless motor system also includes a permanent magnet (PM) rotor attached to the reel frame and including a plurality of permanent magnets attached to the PM rotor. The brushless motor system further includes a stator including stator coils attached to the reel hub, the plurality of stator coils are mounted parallel to a surface of the PM rotor at a separation distance. The stator causes the PM rotor to rotate during activation of the stator without direct contact between the stator and the rotor, thereby causing the display of one or more symbols of the plurality of symbols during the wagering game based on the rotation.
    Type: Application
    Filed: July 8, 2022
    Publication date: October 27, 2022
    Inventors: William Lamb, Thach Du, Charles A. Liter
  • Patent number: 11386743
    Abstract: A brushless motor system for use with a mechanical reel gaming machine is provided. The brushless motor system includes a reel hub and a reel frame rotationally attached to a center shaft of the reel hub. The brushless motor system also includes a permanent magnet (PM) rotor attached to the reel frame and including a plurality of permanent magnets attached to the PM rotor. The brushless motor system further includes a stator including stator coils attached to the reel hub, the plurality of stator coils are mounted parallel to a surface of the PM rotor at a separation distance. The stator causes the PM rotor to rotate during activation of the stator without direct contact between the stator and the rotor, thereby causing the display of one or more symbols of the plurality of symbols during the wagering game based on the rotation.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: July 12, 2022
    Assignee: Aristocrat Technologies Australia Pty Limited
    Inventors: William Lamb, Thach Du, Charles A. Liter
  • Patent number: 11127243
    Abstract: A brushless motor system for use with a mechanical reel gaming machine is provided. The brushless motor system includes a reel hub and a reel frame rotationally attached to a center shaft of the reel hub. The brushless motor system also includes a permanent magnet (PM) rotor attached to the reel frame and including a plurality of permanent magnets attached to the PM rotor. The brushless motor system further includes a stator including stator coils attached to the reel hub, the plurality of stator coils are mounted parallel to a surface of the PM rotor at a separation distance. The stator causes the PM rotor to rotate during activation of the stator without direct contact between the stator and the rotor, thereby causing the display of one or more symbols of the plurality of symbols during the wagering game based on the rotation.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: September 21, 2021
    Assignee: ARISTOCRAT TECHNOLOGIES AUSTRALIA PTY LIMITED
    Inventors: William Lamb, Thach Du, Charles A. Liter
  • Publication number: 20200342708
    Abstract: A brushless motor system for use with a mechanical reel gaming machine is provided. The brushless motor system includes a reel hub and a reel frame rotationally attached to a center shaft of the reel hub. The brushless motor system also includes a permanent magnet (PM) rotor attached to the reel frame and including a plurality of permanent magnets attached to the PM rotor. The brushless motor system further includes a stator including stator coils attached to the reel hub, the plurality of stator coils are mounted parallel to a surface of the PM rotor at a separation distance. The stator causes the PM rotor to rotate during activation of the stator without direct contact between the stator and the rotor, thereby causing the display of one or more symbols of the plurality of symbols during the wagering game based on the rotation.
    Type: Application
    Filed: July 9, 2020
    Publication date: October 29, 2020
    Inventors: William Lamb, Thach Du, Charles A. Liter
  • Patent number: 10726662
    Abstract: A brushless motor system for use with a mechanical reel gaming machine is provided. The brushless motor system includes a reel hub and a reel frame rotationally attached to a center shaft of the reel hub. The brushless motor system also includes a permanent magnet (PM) rotor attached to the reel frame and including a plurality of permanent magnets attached to the PM rotor. The brushless motor system further includes a stator including stator coils attached to the reel hub, the plurality of stator coils are mounted parallel to a surface of the PM rotor at a separation distance. The stator causes the PM rotor to rotate during activation of the stator without direct contact between the stator and the rotor, thereby causing the display of one or more symbols of the plurality of symbols during the wagering game based on the rotation.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: July 28, 2020
    Assignee: ARISTOCRAT TECHNOLOGIES AUSTRALIA PTY LIMITED
    Inventors: William Lamb, Thach Du, Charles A. Liter
  • Patent number: 10726663
    Abstract: A brushless motor system for use with a mechanical reel gaming machine is provided. The brushless motor system includes a reel hub and a reel frame rotationally attached to a center shaft of the reel hub. The brushless motor system also includes a permanent magnet (PM) rotor attached to the reel frame and including a plurality of permanent magnets attached to the PM rotor. The brushless motor system further includes a stator including stator coils attached to the reel hub, the plurality of stator coils are mounted parallel to a surface of the PM rotor at a separation distance. The stator causes the PM rotor to rotate during activation of the stator without direct contact between the stator and the rotor, thereby causing the display of one or more symbols of the plurality of symbols during the wagering game based on the rotation.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: July 28, 2020
    Assignee: ARISTOCRAT TECHNOLOGIES AUSTRALIA PTY LIMITED
    Inventors: William Lamb, Thach Du, Charles A. Liter
  • Publication number: 20200168032
    Abstract: A brushless motor system for use with a mechanical reel gaming machine is provided. The brushless motor system includes a reel hub and a reel frame rotationally attached to a center shaft of the reel hub. The brushless motor system also includes a permanent magnet (PM) rotor attached to the reel frame and including a plurality of permanent magnets attached to the PM rotor. The brushless motor system further includes a stator including stator coils attached to the reel hub, the plurality of stator coils are mounted parallel to a surface of the PM rotor at a separation distance. The stator causes the PM rotor to rotate during activation of the stator without direct contact between the stator and the rotor, thereby causing the display of one or more symbols of the plurality of symbols during the wagering game based on the rotation.
    Type: Application
    Filed: January 30, 2020
    Publication date: May 28, 2020
    Inventors: William Lamb, Thach Du, Charles A. Liter
  • Publication number: 20200160652
    Abstract: A brushless motor system for use with a mechanical reel gaming machine is provided. The brushless motor system includes a reel hub and a reel frame rotationally attached to a center shaft of the reel hub. The brushless motor system also includes a permanent magnet (PM) rotor attached to the reel frame and including a plurality of permanent magnets attached to the PM rotor. The brushless motor system further includes a stator including stator coils attached to the reel hub, the plurality of stator coils are mounted parallel to a surface of the PM rotor at a separation distance. The stator causes the PM rotor to rotate during activation of the stator without direct contact between the stator and the rotor, thereby causing the display of one or more symbols of the plurality of symbols during the wagering game based on the rotation.
    Type: Application
    Filed: January 24, 2020
    Publication date: May 21, 2020
    Inventors: William Lamb, Thach Du, Charles A. Liter
  • Publication number: 20200160651
    Abstract: A brushless motor system for use with a mechanical reel gaming machine is provided. The brushless motor system includes a reel hub and a reel frame rotationally attached to a center shaft of the reel hub. The brushless motor system also includes a permanent magnet (PM) rotor attached to the reel frame and including a plurality of permanent magnets attached to the PM rotor. The brushless motor system further includes a stator including stator coils attached to the reel hub, the plurality of stator coils are mounted parallel to a surface of the PM rotor at a separation distance. The stator causes the PM rotor to rotate during activation of the stator without direct contact between the stator and the rotor, thereby causing the display of one or more symbols of the plurality of symbols during the wagering game based on the rotation.
    Type: Application
    Filed: January 24, 2020
    Publication date: May 21, 2020
    Inventors: William Lamb, Thach Du, Charles A. Liter
  • Patent number: 10573119
    Abstract: A brushless motor system for use with a mechanical reel gaming machine is provided. The brushless motor system includes a reel hub and a reel frame rotationally attached to a center shaft of the reel hub. The brushless motor system also includes a permanent magnet (PM) rotor attached to the reel frame and including a plurality of permanent magnets attached to the PM rotor. The brushless motor system further includes a stator including stator coils attached to the reel hub, the plurality of stator coils are mounted parallel to a surface of the PM rotor at a separation distance. The stator causes the PM rotor to rotate during activation of the stator without direct contact between the stator and the rotor, thereby causing the display of one or more symbols of the plurality of symbols during the wagering game based on the rotation.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: February 25, 2020
    Assignee: ARISTOCRAT TECHNOLOGIES AUSTRALIA PTY LIMITED
    Inventors: William Lamb, Thach Du, Charles A. Liter
  • Publication number: 20190311570
    Abstract: A brushless motor system for use with a mechanical reel gaming machine is provided. The brushless motor system includes a reel hub and a reel frame rotationally attached to a center shaft of the reel hub. The brushless motor system also includes a permanent magnet (PM) rotor attached to the reel frame and including a plurality of permanent magnets attached to the PM rotor. The brushless motor system further includes a stator including stator coils attached to the reel hub, the plurality of stator coils are mounted parallel to a surface of the PM rotor at a separation distance. The stator causes the PM rotor to rotate during activation of the stator without direct contact between the stator and the rotor, thereby causing the display of one or more symbols of the plurality of symbols during the wagering game based on the rotation.
    Type: Application
    Filed: April 5, 2018
    Publication date: October 10, 2019
    Inventors: William Lamb, Thach Du, Charles A. Liter