Patents by Inventor Ki Sheung Yuen

Ki Sheung Yuen 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).

  • Publication number: 20090293567
    Abstract: A device electronically tracks the use of a key to open or close a lockset and retain information of the key to allow a user to query the device and receive information with respect to the last recorded status. The device includes an actuating arrangement to allow tracking of the acceleration of the key during a locking or unlocking motion. These tracked signals are evaluated relative to at least two known signals indicative of a locking movement or an unlocking movement. The user is able to query the device at a later point in time and receive timing information of the present status and timing information between changes in status.
    Type: Application
    Filed: May 27, 2009
    Publication date: December 3, 2009
    Inventors: Ki Sheung Yuen, Ying Wai Chik, Yiu Kong Wong
  • Publication number: 20080293425
    Abstract: A wireless communication system operates without a base station and allows effective real time conferencing between two or more units. A particular communication protocol used by the devices synchronizes the signals. Received signals are combined to provide the full conferencing feature.
    Type: Application
    Filed: May 1, 2008
    Publication date: November 27, 2008
    Applicant: Nautic Devices Inc
    Inventors: Ki Sheung Yuen, Ying Wai Chik
  • Patent number: 7259341
    Abstract: A tamper switch actuator is used in combination with a circuit board held between two outer structural members. The tamper switch actuator includes a suspended displacement member moveable to a conducting position after a given amount of compression of a compressing member. The compressing member cooperates with an outer protecting sleeve and is positioned within and moveable in the axial direction of the sleeve. The tamper switch actuator separates the outer protecting sleeve from the displacement member. With this arrangement the electrical conducting surface of the displacement member can quickly respond to separation of the casing to produce a non-conducting condition or tamper indicating conditions while remaining protected within the outer protecting sleeve.
    Type: Grant
    Filed: September 22, 2005
    Date of Patent: August 21, 2007
    Assignee: Ingenico Canada Ltd.
    Inventors: Herve Quinque, Ki Sheung Yuen, Craig J. Cochran
  • Patent number: 6373511
    Abstract: A transaction device comprises a terminal module and printer module mechanically secured in an angled configuration. This angled configuration orientates a touch screen input and display device at an angle to the horizontal to reduce reflected light problems. In addition, the angle orientation of the printer improves space efficiency. A lower surface of the terminal module is easily accessible for connecting the device to other modules or to remote computers.
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: April 16, 2002
    Assignee: IVI Checkmate Corp.
    Inventors: David Henry Groves, Yiu Kong Wong, Jerry Crosetti, Ki Sheung Yuen, Fraser Hardman
  • Patent number: 6097606
    Abstract: A financial transaction terminal is designed to receive both smart cards and debit cards and includes an access port for inserting or removing security modules such as SIM or SAM modules. A security switch arrangement is provided about the access port to protect the now accessible components of the terminal. Such a terminal provides the uncompromised physical security of a debit terminal with the flexibility and capabilities of a smart card terminal.
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: August 1, 2000
    Assignee: International Verifact Inc.
    Inventors: David Henry Groves, Fraser Hardman, John Richard Spence, Ki Sheung Yuen, Yiu Kong Wong
  • Patent number: 5938472
    Abstract: A tamper proof arrangement utilizes a multi-layered conductive/non-conductive electrical member to electrically connect electrical contact pairs located on a circuit board. The electrical member is supported by caps associated with a housing which contains the circuit board. Release of the end caps from the housing results in the electrical contact member breaking the connection between electrical contact pairs. This arrangement is particularly suited where a series of contact pairs are present and the electrical member closes each pair separately. In this way multi-pole switches are formed.
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: August 17, 1999
    Assignee: International Verifact Inc.
    Inventors: Ki Sheung Yuen, Yiu Kong Wong
  • Patent number: 5321243
    Abstract: A reading head mounting arrangement is disclosed. The arrangement comprises a base having a top surface and extending from a side thereof an upright mounting member for mounting of a reading head in proper spaced relationship from the top surface of the base for reading of a information containing stripe attached to a card. Preferably, the base has downwardly projecting portions at either end thereof to provide on and off ramps for a credit card being slid over the base, whereby when the arrangement is installed in a magnetic stripe reading terminal having a slot for passage of a credit card past a magnetic stripe reading head, the change in elevation of the base relative to the remainder of the slot provides a user of the terminal with positive feedback that the card is properly positioned in the slot. Accuracy in positioning the strip for movement past the magnetic head is predetermined during the manufacture of the mounting arrangement.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: June 14, 1994
    Assignee: International Verifact Inc.
    Inventors: David H. Groves, Ki Sheung Yuen, Yiu Kong Wong
  • Patent number: D447136
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: August 28, 2001
    Assignee: IVI Checkmate Corp.
    Inventors: David Henry Groves, Yiu Kong Wong, Fraser Hardman, Ki Sheung Yuen, Thornton K. Lothrop