Patents by Inventor William L. Schmidt

William L. Schmidt 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).

  • Localized cooling apparatus for cooling integrated circuit devices
    Patent number: 4935864
    Abstract: A localized cooling apparatus is provided for individually cooling integrated circuit chips mounted on a circuit board for insertion into a computer backplane. The cooling apparatus consists of a circuit board occupying a first slot and having an integrated circuit chip mounted thereon, the performance of which is known to improve by cooling, a heat removal assembly consisting of a heat sink attached to a card edge portion and occupying an adjacent second slot, and a thermoelectric cooler intimately bonded to both the chip and heat removal assembly. A controller provides power via the connector of the second slot to the thermoelectric cooler and stabilizes the temperature of the chip to a predetermined value.
    Type: Grant
    Filed: June 20, 1989
    Date of Patent: June 19, 1990
    Assignee: Digital Equipment Corporation
    Inventors: William L. Schmidt, Richard E. Olson, Dennis J. Solley
  • Rack for circuit boards of an electrical system
    Patent number: 4862320
    Abstract: The present invention is directed to a structure for positioning electronic modules of an electronic system therein, and particularly to a rack often called a card cage in which circuit boards are disposed. The rack embodying the invention incorporates a frame having four sides and a back plate. Two of the opposite sides are grilles. The frame is adapted for supporting printed circuit boards perpendicular to the grill. Thus, a fluid cooling medium, such as air, can enter the rack through one of the grilles, flow along and between the circuit boards and exit through the other grilles. The resistance to the flow of such air for cooling by the grilles is significantly greater than the boards disposed therein. Thus, the grilles permit a uniform coolant flow for each of the circuit boards in the rack.The rack has a lever assembly which remotely actuates connectors positioned in the rack to contact the circuit boards positioned therein.
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: August 29, 1989
    Assignee: Digital Equipment Corporation
    Inventors: William L. Schmidt, Richard E. Olson, Douglas A. Bailey
  • Method of making plastic ski
    Patent number: 4044083
    Abstract: A snow ski having a plastic foam core formed in situ between preformed top and bottom subassemblies.
    Type: Grant
    Filed: July 23, 1975
    Date of Patent: August 23, 1977
    Assignee: AMF Incorporated
    Inventors: John G. Howe, William L. Schmidt
  • Plastic ski and method of making the same
    Patent number: 3930658
    Abstract: A snow ski having a plastic foam core formed in situ between preformed top and bottom subassemblies.
    Type: Grant
    Filed: October 29, 1973
    Date of Patent: January 6, 1976
    Assignee: AMF Incorporated
    Inventors: John G. Howe, William L. Schmidt