Patents by Inventor Eric Cheng

Eric Cheng 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: 8217618
    Abstract: The present invention relates to an energy-saving system for three-phase induction motors and is based on the principle of variable voltage control at constant speed. It is composed of a microprocessor, exampling circuit, sensing circuit, acquiring circuit, firing circuit, and AC to AC converter. The system is to automatically adjust the voltage to the induction motor with the variation in the motor load, in order to obtain high operating power factor and efficiency. The system will result in considerable energy-savings when a three-phase induction motor runs under constant light-load or variable-load with low duty ratio.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: July 10, 2012
    Assignee: The Hong Kong Polytechnic University
    Inventors: Ka Wai Eric Cheng, Xiangdang Xue
  • Patent number: 8211115
    Abstract: A medical device includes an elongate member defining a lumen and a tipless basket having a proximal end and a distal end. The basket is retractable within and extendable from the lumen. The basket includes a plurality of proximal legs extending from the proximal end of the basket and a plurality of distal legs extending to the distal end of the basket. Each of the plurality of proximal legs is connected to an end of at least two of the plurality of distal legs between the proximal and distal ends of the basket.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: July 3, 2012
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Eric Cheng, James A. Teague
  • Publication number: 20120140485
    Abstract: An LED display with a reduced thickness is described. In one embodiment, the LED display includes a second support plate between a front support plate and a back support plate. The second support plate enables the front support plate to be thinner than if the second support plate was not included. The second support plate increases the distance between an LED chip and a light exit surface thereby allowing the front support plate thickness to be reduced by about the thickness of the second support plate. In one embodiment, the second support plate allows the thickness of an LED display to be thinner. The second support plate adds structural integrity to a back support plate. Therefore, the back support plate can be thinner, and thickness of the LED display can be reduced.
    Type: Application
    Filed: February 13, 2012
    Publication date: June 7, 2012
    Applicant: AMERICAN OPTO PLUS LED CORPORATION
    Inventor: ERIC CHENG YUAN WU
  • Patent number: 8182544
    Abstract: A method for placing an embolic coil into an aneurysm utilizing a delivery system having a deflected distal section. The delivery system stabilizes an embolic coil deployment system thereby placing the embolic coil with greater accuracy.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: May 22, 2012
    Assignee: Codman & Shurtleff, Inc.
    Inventors: Eric Cheng, Larry Dominguez
  • Publication number: 20120096885
    Abstract: A solar powered vehicle air-conditioning system for air conditioning a vehicle includes an air conditioning subsystem and a solar power subsystem. The air conditioning subsystem includes a compressor, a condenser, an evaporator and a plurality of valves and sensors, and is configured for air conditioning the vehicle. The solar power subsystem includes a solar photovoltaic module configured for generating electric power when being illuminated by sunlight, a battery module configured for providing electric power to the air conditioning subsystem, and a solar power control module configured for receiving the electric power from the solar photovoltaic module and charging the battery module thereby. The solar power control module is configured to regulate the charging current flowing from the solar power control module to the battery module to be equal to or less than a predetermined current value.
    Type: Application
    Filed: September 6, 2011
    Publication date: April 26, 2012
    Inventors: Shui Hung MAK, Ka Wai Eric Cheng
  • Patent number: 8152718
    Abstract: Embodiments of the invention are directed medical devices for illuminating and viewing a patient's internal body portion. The device may include an elongated flexible tube including a distal end and a proximal end. The tube defines a channel extending from the proximal end to an aperture at the distal end. An illumination device is housed within the channel and configured to emit a distally directed path of light. A light source is provided at the distal end of the flexible tube and configured to emit a laterally directed path of light. In one embodiment the light source is a organic light emitting diode.
    Type: Grant
    Filed: January 3, 2007
    Date of Patent: April 10, 2012
    Assignee: Boston Scientific Scimed, Inc.
    Inventor: Eric Cheng
  • Publication number: 20120078052
    Abstract: Embodiments of the invention are directed medical devices for illuminating and viewing a patient's internal body portion. The device may include an elongated flexible tube including a distal end and a proximal end. The tube defines a channel extending from the proximal end to an aperture at the distal end. An illumination device is housed within the channel and configured to emit a distally directed path of light. A light source is provided at the distal end of the flexible tube and configured to emit a laterally directed path of light. In one embodiment the light source is a organic light emitting diode.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 29, 2012
    Inventor: Eric CHENG
  • Patent number: 8136960
    Abstract: An LED display with a reduced thickness is described. In one embodiment, the LED display includes a second support plate between a front support plate and a back support plate. The second support plate enables the front support plate to be thinner than if the second support plate was not included. The second support plate increases the distance between an LED chip and a light exit surface thereby allowing the front support plate thickness to be reduced by about the thickness of the second support plate. In one embodiment, the second support plate allows the thickness of an LED display to be thinner. The second support plate adds structural integrity to a back support plate. Therefore, the back support plate can be thinner, and thickness of the LED display can be reduced.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: March 20, 2012
    Assignee: American Opto Plus LED Corporation
    Inventor: Eric Cheng Yuan Wu
  • Publication number: 20120055175
    Abstract: A hybrid air conditioning system for a combustion engine vehicle. When the combustion engine is running and a rechargeable battery unit is not at full charge, an electric machine is configured by an MCU control unit as mechanically coupled to the combustion engine, and a battery charger is configured as electrically connected to the rechargeable battery unit such that the electric machine generates electric power to recharge the rechargeable battery unit. When the combustion engine stops and air conditioning is required, the rechargeable battery unit is configured by the MCU control unit as electrically connected to a motor drive, and the electric machine is configured as mechanically coupled to the compressor to provide mechanical power to drive the compressor. This allows the automobile air conditioning system to operate for a limited period of time after the combustion engine stops.
    Type: Application
    Filed: September 3, 2010
    Publication date: March 8, 2012
    Applicant: Automotive Parts and Accessory Systems R&D Centre Ltd
    Inventors: Wai Lam Ting, Ka-Wai Eric Cheng, Yiu Pun Benny Yeung, Wing Wa Chan, Chun Yuen Lam, Wai Fung Choi, Tsz Wang Ng., Chup Chung Wong, Meng Chen, Man Chit Chan
  • Patent number: 8105334
    Abstract: A medical device includes a sheath defining a lumen, an elongate member disposed within the lumen, and a basket connected to a distal end of the elongate member and being retractable within and extendable from the lumen. The basket includes a plurality of legs. At least one leg of the plurality of legs includes a material that is substantially resistant to Holmium laser energy.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: January 31, 2012
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Eric Cheng, Arthur Butcher, Jeffrey Smith
  • Patent number: 8080949
    Abstract: The present invention relates to temperature compensation of HID lamps in automobiles. The invention concerns the manner in which the temperature of the HID lamp is accounted for in order to drive the lamp is at appropriate power from hot to cold conditions. In the present invention, the voltage across a capacitor in the temperature compensation circuit is sensed and used as a command signal to anticipate lamp temperature, and accordingly the reference power to the HID lamp is modulated depending on the temperature of the lamp. In the present invention, the lamp is driven with a higher power setting when the lamp is cold and with lower power setting when hot. This adaptive generation of reference power setting depending on the temperature of the lamp is implemented using the voltage across a capacitor in the temperature compensation circuit.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: December 20, 2011
    Assignee: The Hong Kong Polytechnic University
    Inventors: Ka Wai Eric Cheng, Bangalore Prabhakar Divakar, Dao Hong Wang, Chow Norbert Cheung
  • Publication number: 20110284300
    Abstract: A switched reluctance motor includes an inner stator having a plurality of stator poles with coil windings, the inner stator having a plurality of stator phases, an outer rotor configured to rotate around the inner stator, the outer rotor having a plurality of rotor poles, at least one position sensor configured to detect a position of the outer rotor, and a DC supply configured to sequentially supply current to excite the stator phases.
    Type: Application
    Filed: May 18, 2010
    Publication date: November 24, 2011
    Applicant: THE HONG KONG POLYTECHNIC UNIVERSITY
    Inventors: Ka Wai Eric Cheng, Xiangdang Xue, Chow Norbert Cheung
  • Publication number: 20110019412
    Abstract: An LED display with a reduced thickness is described. In one embodiment, the LED display includes a second support plate between a front support plate and a back support plate. The second support plate enables the front support plate to be thinner than if the second support plate was not included. The second support plate increases the distance between an LED chip and a light exit surface thereby allowing the front support plate thickness to be reduced by about the thickness of the second support plate. In one embodiment, the second support plate allows the thickness of an LED display to be thinner. The second support plate adds structural integrity to a back support plate. Therefore, the back support plate can be thinner, and thickness of the LED display can be reduced.
    Type: Application
    Filed: September 30, 2010
    Publication date: January 27, 2011
    Applicant: AMERICAN OPTO PLUS LED CORPORATION
    Inventor: Eric Cheng Yuan Wu
  • Publication number: 20110018480
    Abstract: A converter circuit includes a phase circuit having a switch module, a first winding, a first diode, a second winding, and a second diode. The second winding is inductively coupled to the first winding. A multi-phase motor including the converter circuit, and a related method of controlling such a motor, are also provided.
    Type: Application
    Filed: July 24, 2009
    Publication date: January 27, 2011
    Applicant: AUTOMOTIVE PARTS AND ACCESSORY SYSTEMS R & D CENTRE LIMITED
    Inventors: Ka Wai Eric Cheng, Xiangdang Xue
  • Patent number: 7837693
    Abstract: A medical device includes a sheath defining a lumen, and an elongate member movably disposed within the lumen. The elongate member includes a basket having a plurality of legs, at least one leg of the plurality of legs is disposed between adjacent first and second slots defined by the elongate member. A first distal relief feature at a distal end of the first slot is longitudinally offset from a second distal relief feature at a distal end of the second slot.
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: November 23, 2010
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Eric Cheng, James A. Teague
  • Publication number: 20100268247
    Abstract: Embodiments of the invention are directed to a medical device and methods for immobilizing and retrieving material from a patient's body. The device may include a sheath having a lumen, a distal end, and a proximal end. An elongate member is provided including an expansible member connected to a distal portion of the elongate member. The elongate member and expansible member are movable relative to the sheath to achieve a first state of the expansible member when the expansible member is within the lumen of the sheath and an expanded state when the expansible member extends from the distal end of the sheath. The expansible member comprises a material that expands to the expanded state due to the presence of fluid.
    Type: Application
    Filed: April 21, 2010
    Publication date: October 21, 2010
    Inventor: Eric Cheng
  • Patent number: 7727227
    Abstract: A medical device includes a sheath having a lumen and an elongate member disposed within the lumen of the sheath. The elongate member is moveable relative to the sheath and includes a retrieval assembly. The retrieval assembly has a collapsed position within the lumen of the sheath and an expanded position when extended beyond a distal end of the sheath. The elongate member defines a lumen configured to receive a laser.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: June 1, 2010
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: James A. Teague, Jason W. Kear, Juli L. Curtis, Eric Cheng, Joseph W. Segura
  • Publication number: 20100118529
    Abstract: An LED display with a reduced thickness is described. In one embodiment, the LED display includes a second support plate between a front support plate and a back support plate. The second support plate enables the front support plate to be thinner than if the second support plate was not included. The second support plate increases the distance between an LED chip and a light exit surface thereby allowing the front support plate thickness to be reduced by about the thickness of the second support plate. In one embodiment, the second support plate allows the thickness of an LED display to be thinner. The second support plate adds structural integrity to a back support plate. Therefore, the back support plate can be thinner, and thickness of the LED display can be reduced.
    Type: Application
    Filed: November 12, 2008
    Publication date: May 13, 2010
    Inventor: Eric Cheng Yuan Wu
  • Patent number: 7675401
    Abstract: A circuit board, for an electronic circuit having a passive circuit component, has a component region, a non-component region, and circuit wiring conductors on its surface. The component region includes a polymer composition comprising a mixture of polymer resin and filler material that, in combination with the circuit wiring conductors, forms the passive circuit component.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: March 9, 2010
    Assignee: The Hong Kong Polytechnic University
    Inventors: Ka Wai Eric Cheng, Chak Yin Tang
  • Publication number: 20090157163
    Abstract: A retrieval device is disclosed. The retrieval device may include a sheath including a lumen extending longitudinally through the sheath, an elongate member slidably disposed within the lumen, and a basket at a distal end of the elongate member. The basket may include a plurality of legs formed integrally with the elongate member. The elongate member and the basket may be formed of a single wire, and the legs may be made by splitting a length of the single wire.
    Type: Application
    Filed: December 16, 2008
    Publication date: June 18, 2009
    Inventors: Eric Cheng, Jeffrey C. Smith, James Teague, Mohamed Fazni Aziz