Patents by Inventor Samuel T. Cheung

Samuel T. Cheung 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).

  • Personal computer processor card interconnect system
    Patent number: 5162979
    Abstract: A personal computer system unit has a planar card upon which is mounted a processor card. The processor has mounted thereon those components, except for system memory, which are most likely to be replaced for a system upgrade. The processor card has a printed circuit board with printed circuits thereon that terminate along one edge at contacts. Two aligned edge connectors are mounted on the planar board. One connector has a key which engages a slot on the edge of the processor card to align the many contacts with contact arms. Two levers are mounted on the card and cooperate with frame elements to insert, extract and latch the processor card. Each element also has a guide to align the processor card for insertion into the edge connectors.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: November 10, 1992
    Assignee: International Business Machines Corp.
    Inventors: Thomas A. Anzelone, Samuel T. Cheung, Mark E. Cohen, Kevin K. Cooke, John R. Dewitt, Michael S. Miller, Jay H. Neer, Eddie M. Reid, Robert D. Wysong