Patents by Inventor Leung Kwok Chung

Leung Kwok Chung 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: 9167667
    Abstract: The present invention is directed to an electrical device that includes a lighting circuit is disposed in the second housing and coupled to the voltage output terminals. The lighting circuit includes a control circuit coupled to a plurality of first light elements and at least one second lighting element. The plurality of first light elements is configured to provide a relatively wide illumination beam when energized by the control circuit in a first operational state, and the at least one second lighting element being configured to provide a relatively narrow illumination beam when energized by the control circuit in a second operational state. The control circuit is configured such that the first operational state and second operational state do not simultaneously occur.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: October 20, 2015
    Assignee: Pass & Seymour, Inc.
    Inventors: Lorenzo Trolese, Richard M. Rohmer, Lam Chung Fai, Leung Kwok Chung, Joshua Haines
  • Patent number: 9091403
    Abstract: The present invention is directed to an electrical device that includes a control circuit having a processing circuit, an electronic switch, light emitting elements and an ambient light sensor disposed on a substrate. The processing circuit provides an electronic barrier between the light emitting elements and the ambient light sensor such that the operation of the ambient light sensor is not contaminated by light emitted by the plurality of light emitting elements. A cover assembly includes a lens element and a switch actuator comprised of a diffusing material. The lens element and the switch actuator are disposed over the light emitting elements such that the light emitted by the light emitting elements is diffused by the lens element and the switch actuator to emit a substantially uniform illumination without any shadow or hot spot artifacts being visible on either the lens element or the switch actuator.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: July 28, 2015
    Assignee: Pass & Seymour, Inc.
    Inventors: Lorenzo Trolese, Richard M Rohmer, Lam Chung Fai, Leung Kwok Chung, Joshua Haines
  • Publication number: 20140139119
    Abstract: The present invention is directed to an electrical device that includes a lighting circuit is disposed in the second housing and coupled to the voltage output terminals. The lighting circuit includes a control circuit coupled to a plurality of first light elements and at least one second lighting element. The plurality of first light elements is configured to provide a relatively wide illumination beam when energized by the control circuit in a first operational state, and the at least one second lighting element being configured to provide a relatively narrow illumination beam when energized by the control circuit in a second operational state. The control circuit is configured such that the first operational state and second operational state do not simultaneously occur.
    Type: Application
    Filed: March 15, 2013
    Publication date: May 22, 2014
    Applicant: Pass & Symour, Inc.
    Inventors: Lorenzo Trolese, Richard M. Rohmer, Lam Chung Fai, Leung Kwok Chung, Joshua Haines
  • Publication number: 20140140064
    Abstract: The present invention is directed to an electrical device that includes a control circuit having a processing circuit, an electronic switch, light emitting elements and an ambient light sensor disposed on a substrate. The processing circuit provides an electronic barrier between the light emitting elements and the ambient light sensor such that the operation of the ambient light sensor is not contaminated by light emitted by the plurality of light emitting elements. A cover assembly includes a lens element and a switch actuator comprised of a diffusing material. The lens element and the switch actuator are disposed over the light emitting elements such that the light emitted by the light emitting elements is diffused by the lens element and the switch actuator to emit a substantially uniform illumination without any shadow or hot spot artifacts being visible on either the lens element or the switch actuator.
    Type: Application
    Filed: March 15, 2013
    Publication date: May 22, 2014
    Inventors: Lorenzo Trolese, Richard M. Rohmer, Lam Chung Fai, Leung Kwok Chung, Joshua Haines