Patents by Inventor Jimmy C. Leung

Jimmy C. 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).

  • Method and apparatus for controlling removal of a circuit board module from a chassis
    Patent number: 8179680
    Abstract: A method and apparatus for controlling removal of a circuit board module from a chassis comprising an actuator and an electrical switch. The actuator having a locked state and an unlocked state, where the circuit board module is removable from the chassis when the actuator is in the unlocked state and the circuit board module is not removable when the actuator is in the locked state. The electrical switch is coupled to the actuator to produce a first signal indicating the locked state and a second signal indicating the unlocked state.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: May 15, 2012
    Assignee: Cisco Technology, Inc.
    Inventors: Mandy Lam, Jimmy C. Leung, Toan Nguyen, Saeed Seyed
  • Clinch for a circuit card ejector
    Patent number: 7874776
    Abstract: A clinch suitable for an ejector of a line card is provided. The clinch includes a cylinder, which includes a shoulder flange, an extension portion and a plurality of knurls. The shoulder flange extends radially from a first end of the cylinder, and the extension portion is formed at a second end of the cylinder. The knurls are formed at the second end surrounding the extension portion.
    Type: Grant
    Filed: September 1, 2009
    Date of Patent: January 25, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Mandy Lam, Jimmy C. Leung, Toan Nguyen
  • Clinch for a circuit card ejector
    Patent number: 7607877
    Abstract: A clinch suitable for an ejector of a line card is disclosed. The clinch includes a cylinder, which includes a shoulder flange, an extension portion and a plurality of knurls. The shoulder flange extends radially from a first end of the cylinder, and the extension portion is formed at a second end of the cylinder. The knurls are formed at the second end surrounding the extension portion.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: October 27, 2009
    Assignee: Cisco Technology, Inc.
    Inventors: Mandy Lam, Jimmy C. Leung, Toan Nguyen