Patents by Inventor Ernest Tang

Ernest Tang 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).

  • Gear motor for power tool
    Patent number: 6966391
    Abstract: A compact gearbox/motor combination for a portable power tool has a single partition plate 23 closing an end of the gearbox housing 24 and the motor housing 19. A shaft 14 of the motor is journalled at one end in a self-aligning bearing 21 supported by an end cap 20 of the motor. The other end of the motor shaft 14 is journalled in a hole 41 in a gear carrier 29 of the gearbox.
    Type: Grant
    Filed: May 10, 2002
    Date of Patent: November 22, 2005
    Assignee: Johnson Electric S.A.
    Inventor: Ernest Tang
  • Gear motor for power tool
    Publication number: 20020185290
    Abstract: A compact gearbox/motor combination for a portable power tool has a single partition plate 23 closing an end of the gearbox housing 24 and the motor housing 19. A shaft 14 of the motor is journalled at one end in a self-aligning bearing 21 supported by an end cap 20 of the motor. The other end of the motor shaft 14 is journalled in a hole 41 in a gear carrier 29 of the gearbox.
    Type: Application
    Filed: May 10, 2002
    Publication date: December 12, 2002
    Inventor: Ernest Tang
  • Double insulated motor armature
    Publication number: 20020050762
    Abstract: An armature for a double insulated electric motor has a shaft 12 made from two shaft portions 14, 16 axially aligned and separated by a small gap and joined together by an overmolded insulator 18 thus eliminating the insulation layer between the armature core and the shaft of a conventional double insulated armature.
    Type: Application
    Filed: October 31, 2001
    Publication date: May 2, 2002
    Inventor: Ernest Tang