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).
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Patent number: 9391493Abstract: 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: GrantFiled: August 23, 2013Date of Patent: July 12, 2016Assignee: 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
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Publication number: 20130342051Abstract: 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: ApplicationFiled: August 23, 2013Publication date: December 26, 2013Applicant: 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
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Patent number: 8519582Abstract: 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: GrantFiled: September 29, 2010Date of Patent: August 27, 2013Assignee: 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
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Patent number: 8497611Abstract: 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: GrantFiled: April 22, 2011Date of Patent: July 30, 2013Assignee: Regal Beloit America, Inc.Inventors: Ngan Fai Leung, Frank Edward Staigl, III
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Publication number: 20120267972Abstract: 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: ApplicationFiled: April 22, 2011Publication date: October 25, 2012Inventors: Ngan Fai Leung, Frank Edward Staigl, III
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Publication number: 20110074235Abstract: 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: ApplicationFiled: September 29, 2010Publication date: March 31, 2011Inventors: 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
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Patent number: 7898131Abstract: 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: GrantFiled: July 7, 2008Date of Patent: March 1, 2011Assignee: A.O. Smith CorporationInventors: Frank E. Staigl, III, Ngan-Fai Leung, Dennis Studebaker, Dennis Bush
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Publication number: 20100001598Abstract: 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: ApplicationFiled: July 7, 2008Publication date: January 7, 2010Applicant: A. O. SMITH CORPORATIONInventors: Frank E. Staigl, III, Ngan-Fai Leung, Dennis Studebaker, Dennis Bush