Patents by Inventor Ngan-Fai Leung

Ngan-Fai Leung 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: 9391493
    Abstract: An electric machine includes a stator having a first end and a second end and an end frame including a first cup portion arranged to at least partially contain a portion of the stator. The end frame is positioned adjacent the first end of the stator. A potting cup includes a second cup portion arranged to at least partially contain a portion of the stator. The potting cup is positioned adjacent the second end of the stator. A potting member is coupled to the stator, the end frame, and the potting cup to permanently bond the end frame, the potting cup, and the stator to one another.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: July 12, 2016
    Assignee: Regal Beloit America, Inc.
    Inventors: Ngan Fai Leung, Stephen Thomas English, Matthew William Critchley, Janice Fitzgerald, Frank Edward Staigl, III, Joseph Henry, Barbara Mary Shanks, John R. Belko
  • Publication number: 20130342051
    Abstract: An electric motor assembly. A stator includes a set of windings and has a first end, a second end, and an outer radial surface. A rotor includes a shaft having an axis. A first frame supports the shaft at a first axial position. A canopy substantially surrounds the first frame. The canopy includes a fluid inlet and a fluid discharge. A second frame supports the shaft at a second axial position and includes at least one fluid outlet. A chute is positioned downstream of the canopy fluid discharge. The chute directs fluid flow along the outer radial surface of the stator towards the fluid outlet. A fan is coupled to the shaft downstream of the fluid outlet for rotation with the shaft.
    Type: Application
    Filed: August 23, 2013
    Publication date: December 26, 2013
    Applicant: Regal Beloit America, Inc.
    Inventors: Ngan Fai Leung, Stephen Thomas English, Matthew William Critchley, Janice Fitzgerald, Frank Edward Staigl, III, Joseph Henry, Barbara Mary Shanks, John R. Belko
  • Patent number: 8519582
    Abstract: An electric motor assembly. A stator includes a set of windings and has a first end, a second end, and an outer radial surface. A rotor includes a shaft having an axis. A first frame supports the shaft at a first axial position. A canopy substantially surrounds the first frame. The canopy includes a fluid inlet and a fluid discharge. A second frame supports the shaft at a second axial position and includes at least one fluid outlet. A chute is positioned downstream of the canopy fluid discharge. The chute directs fluid flow along the outer radial surface of the stator towards the fluid outlet. A fan is coupled to the shaft downstream of the fluid outlet for rotation with the shaft.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: August 27, 2013
    Assignee: Regal Beloit America, Inc.
    Inventors: Ngan Fai Leung, Stephen Thomas English, Matthew William Critchley, Janice Fitzgerald, Frank Edward Staigl, III, Joseph Henry, Barbara Mary Shanks, Stephanie Marie Belko
  • Patent number: 8497611
    Abstract: An end-frame of an electro-dynamic machine includes a bearing housing defining an annular bearing cavity for rotatably supporting a rotor shaft about an axis. A support body is coupled to the bearing housing. The support body has a terminal end and a base end opposite the terminal end. The base end includes a first radial support surface having a first diameter, a second radial support surface having a second diameter, and an annular wall axially disposed between the first radial support surface and the second radial support surface. A radial extension extends radially from the support body adjacent the terminal end. A mounting member extends axially from the radial extension portion. The mounting member defines an aperture for receiving a BX fitting.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: July 30, 2013
    Assignee: Regal Beloit America, Inc.
    Inventors: Ngan Fai Leung, Frank Edward Staigl, III
  • Publication number: 20120267972
    Abstract: An end-frame of an electro-dynamic machine includes a bearing housing defining an annular bearing cavity for rotatably supporting a rotor shaft about an axis. A support body is coupled to the bearing housing. The support body has a terminal end and a base end opposite the terminal end. The base end includes a first radial support surface having a first diameter, a second radial support surface having a second diameter, and an annular wall axially disposed between the first radial support surface and the second radial support surface. A radial extension extends radially from the support body adjacent the terminal end. A mounting member extends axially from the radial extension portion. The mounting member defines an aperture for receiving a BX fitting.
    Type: Application
    Filed: April 22, 2011
    Publication date: October 25, 2012
    Inventors: Ngan Fai Leung, Frank Edward Staigl, III
  • Publication number: 20110074235
    Abstract: An electric motor assembly. A stator includes a set of windings and has a first end, a second end, and an outer radial surface. A rotor includes a shaft having an axis. A first frame supports the shaft at a first axial position. A canopy substantially surrounds the first frame. The canopy includes a fluid inlet and a fluid discharge. A second frame supports the shaft at a second axial position and includes at least one fluid outlet. A chute is positioned downstream of the canopy fluid discharge. The chute directs fluid flow along the outer radial surface of the stator towards the fluid outlet. A fan is coupled to the shaft downstream of the fluid outlet for rotation with the shaft.
    Type: Application
    Filed: September 29, 2010
    Publication date: March 31, 2011
    Inventors: Ngan Fai Leung, Stephen Thomas English, John R. Belko, Matthew William Critchley, Janice Fitzgerald, Frank Edward Staigl, III, Joseph Henry, Barbara Mary Shanks, Stephanie Marie Belko
  • Patent number: 7898131
    Abstract: A motor including a stator, a first connector portion, a selector, and a second connector portion. The stator has a first winding arrangement configured for a first voltage and a second winding arrangement configured for a second voltage different from the first voltage. The first connector portion is selectively connectable to each of the first winding arrangement and the second winding arrangement. The selector is movable between a first position in which the first connector portion is connected to the first winding arrangement, and a second position in which the first connector portion is connected to the second winding arrangement. The second connector portion is electrically connected to a power supply and selectively engageable with the first connector portion to provide power to one of the first winding arrangement and the second winding arrangement.
    Type: Grant
    Filed: July 7, 2008
    Date of Patent: March 1, 2011
    Assignee: A.O. Smith Corporation
    Inventors: Frank E. Staigl, III, Ngan-Fai Leung, Dennis Studebaker, Dennis Bush
  • Publication number: 20100001598
    Abstract: A motor including a stator, a first connector portion, a selector, and a second connector portion. The stator has a first winding arrangement configured for a first voltage and a second winding arrangement configured for a second voltage different from the first voltage. The first connector portion is selectively connectable to each of the first winding arrangement and the second winding arrangement. The selector is movable between a first position in which the first connector portion is connected to the first winding arrangement, and a second position in which the first connector portion is connected to the second winding arrangement. The second connector portion is electrically connected to a power supply and selectively engageable with the first connector portion to provide power to one of the first winding arrangement and the second winding arrangement.
    Type: Application
    Filed: July 7, 2008
    Publication date: January 7, 2010
    Applicant: A. O. SMITH CORPORATION
    Inventors: Frank E. Staigl, III, Ngan-Fai Leung, Dennis Studebaker, Dennis Bush