Patents by Inventor Wai Man Ng
Wai Man Ng 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: 10848003Abstract: A method of transmitting power wirelessly from at least two transmitter loops to at least one power receiver. The method comprises separately supplying a respective alternating current to each one of the transmitter loops thereby to transmit wireless power for receipt by the at least one power receiver. Also provided is a method of receiving power wirelessly. Associated apparatuses and an associated system are also provided.Type: GrantFiled: February 11, 2019Date of Patent: November 24, 2020Assignee: The University of Hong KongInventors: Wai Man Ng, Cheng Zhang, Deyan Lin, Ron Shu Yeun Hui
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Publication number: 20190341808Abstract: A method of transmitting power wirelessly from at least two transmitter loops to at least one power receiver. The method comprises separately supplying a respective alternating current to each one of the transmitter loops thereby to transmit wireless power for receipt by the at least one power receiver. Also provided is a method of receiving power wirelessly. Associated apparatuses and an associated system are also provided.Type: ApplicationFiled: February 11, 2019Publication date: November 7, 2019Inventors: Wai Man Ng, Cheng Zhang, Deyan Lin, Ron Shu Yeun Hui
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Patent number: 10250072Abstract: The present invention provides a wireless power transmitter comprising at least two loops, and separate drivers, each driving a respective one of the loops and providing a respective alternating current to the respective loop, thereby to transmit wireless power for receipt by at least one wireless power receiver. Also provided is a wireless power receiver comprising a receiver loop, and at least two focusing loops. An associated system and an associated method are also provided.Type: GrantFiled: August 26, 2013Date of Patent: April 2, 2019Assignee: The University of Hong KongInventors: Wai Man Ng, Cheng Zhang, Deyan Lin, Ron Shu Yeun Hui
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Publication number: 20150054344Abstract: The present invention provides a wireless power transmitter comprising at least two loops, and separate drivers, each driving a respective one of the loops and providing a respective alternating current to the respective loop, thereby to transmit wireless power for receipt by at least one wireless power receiver. Also provided is a wireless power receiver comprising a receiver loop, and at least two focusing loops. An associated system and an associated method are also provided.Type: ApplicationFiled: August 26, 2013Publication date: February 26, 2015Inventors: Wai Man Ng, Cheng Zhang, Deyan Lin, Ron Shu Yeun Hui
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Patent number: 8952617Abstract: The present invention provides a passive LC ballast and an associated method of manufacturing a passive LC ballast for use with any one of a plurality of high voltage discharge lamps. The passive LC ballast has an inductance and a capacitance selected in accordance with one of a set of one or more inductance-capacitance pairs. Each inductance-capacitance pair defines a respective inductance and a respective capacitance such that, when the inductance and the capacitance of the passive LC ballast is selected in accordance with any one of the inductance-capacitance pairs and the passive LC ballast is used with any one of the lamps, the lamp operates between respective minimum and maximum lamp powers of the lamp.Type: GrantFiled: November 3, 2009Date of Patent: February 10, 2015Assignee: City University of Hong KongInventors: Ron Shu Yuen Hui, Wai Man Ng, Deyan Lin
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Publication number: 20130106300Abstract: The present invention provides a passive LC ballast and an associated method of manufacturing a passive LC ballast for use with any one of a plurality of high voltage discharge lamps. The passive LC ballast has an inductance and a capacitance selected in accordance with one of a set of one or more inductance-capacitance pairs. Each inductance-capacitance pair defines a respective inductance and a respective capacitance such that, when the inductance and the capacitance of the passive LC ballast is selected in accordance with any one of the inductance-capacitance pairs and the passive LC ballast is used with any one of the lamps, the lamp operates between respective minimum and maximum lamp powers of the lamp.Type: ApplicationFiled: November 3, 2009Publication date: May 2, 2013Inventors: Ron Shu Yuen Hui, Wai Man Ng, Deyan Lin
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Patent number: 7014581Abstract: A sound emitting inflatable ball includes an inflatable casing, a first polar receptacle, a second polar receptacle, a sound emitting circuit, a power source and a sound emitting device. The inflatable casing forms a spherical ball, when fully inflated. An air nozzle extends from a periphery of the inflatable casing. The first polar receptacle is inserted into a periphery of the inflatable casing and the second polar receptacle is inserted into the periphery of the inflatable casing opposite the first polar receptacle. Preferably, the power source is retained in the first polar receptacle, and the shock sensor and the sound emitting device are retained in the second polar receptacle. At least two wires connect the power source to the shock sensor and the sound emitting device. A light emitting circuit and light emitting device may be suspended from the at least two wires.Type: GrantFiled: January 27, 2004Date of Patent: March 21, 2006Inventor: Wai-Man Ng
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Publication number: 20040162170Abstract: A sound emitting inflatable ball includes an inflatable casing, a first polar receptacle, a second polar receptacle, a sound emitting circuit, a power source and a sound emitting device. The inflatable casing forms a spherical ball, when fully inflated. An air nozzle extends from a periphery of the inflatable casing. The first polar receptacle is inserted into a periphery of the inflatable casing and the second polar receptacle is inserted into the periphery of the inflatable casing opposite the first polar receptacle. Preferably, the power source is retained in the first polar receptacle, and the shock sensor and the sound emitting device are retained in the second polar receptacle. At least two wires connect the power source to the shock sensor and the sound emitting device. A light emitting circuit and light emitting device may be suspended from the at least two wires.Type: ApplicationFiled: January 27, 2004Publication date: August 19, 2004Inventor: Wai-Man Ng
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Patent number: 6320351Abstract: An intelligent switch for preventing over discharge of a vehicle battery includes a switch connected to toggle between a first state for preventing current flow from the battery and a second state for allowing current flow from the battery. A voltage monitor provides a voltage signal indicative of the voltage level of the battery. A vibration sensor provides a vibration signal indicative of vehicle vibration. A controller is connected to receive the voltage signal and the vibration signal and generate a control signal for toggling the switch to the first state when no vibration of the vehicle is detected and the voltage level of the battery falls below a predetermined voltage threshold. The controller generates another control signal when vibration is detected to toggle the switch to the second state. Multiple voltage thresholds and associated timers are used to maintain an adequate battery charge level under variable load conditions.Type: GrantFiled: January 24, 2001Date of Patent: November 20, 2001Assignee: Sunlite Trading LimitedInventors: Wai Man Ng, Kong Fan Choi
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Publication number: 20010040441Abstract: An intelligent switch for preventing over discharge of a vehicle battery includes a switch connected to toggle between a first state for preventing current flow from the battery and a second state for allowing current flow from the battery. A voltage monitor provides a voltage signal indicative of the voltage level of the battery. A vibration sensor provides a vibration signal indicative of vehicle vibration. A controller is connected to receive the voltage signal and the vibration signal and generate a control signal for toggling the switch to the first state when no vibration of the vehicle is detected and the voltage level of the battery falls below a predetermined voltage threshold. The controller generates another control signal when vibration is detected to toggle the switch to the second state. Multiple voltage thresholds and associated timers are used to maintain an adequate battery charge level under variable load conditions.Type: ApplicationFiled: January 24, 2001Publication date: November 15, 2001Inventors: Wai Man NG, Kong Fan Choi
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Patent number: 5408068Abstract: An electric heater for use in a vehicle, to heat a container of food or beverage, includes a flexible jacket that is wrapped around the container to be heated, and an electrical lead and plug for connecting the heater to a source of electrical power, such as the cigarette lighter socket of a vehicle. The flexible jacket consists of inner and outer cover layers. Sandwiched between the inner and outer layers are a flexible layer of electrically conductive material, a flexible electric heating element secured to the layer of electrically conductive material, and a flexible insulating layer disposed between the layer of electrically conductive material and the outer cover layer. The electrical heating element is connected to the electrical lead, to receive power supplied thereby.Type: GrantFiled: April 29, 1993Date of Patent: April 18, 1995Inventor: Wai-Man Ng
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Patent number: D462907Type: GrantFiled: January 10, 2002Date of Patent: September 17, 2002Assignee: Man Will Industrial CompanyInventor: Wai-Man Ng
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Patent number: D479549Type: GrantFiled: February 22, 2002Date of Patent: September 9, 2003Assignee: Concord Camera Corp.Inventor: Wai Man Ng