Patents by Inventor Douglas R. Clark

Douglas R. Clark 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: 5623772
    Abstract: An exemplary foot-warming system includes a device wherein a support assembly detachably mounts a battery pack on the upper surface of a boot to electrically power a heating element within the boot via an electrical cord that preferably passes through an opening in the boot beneath the mounted battery pack. The support assembly preferably includes a shallow retaining barrier, such as a frame-shaped sheet, for normally confining the battery pack to a predetermined position on the boot and a stretchable outer covering, such as an elastomeric panel, that forms a yieldable pocket within the barrier so that during a strong jolt to the battery pack or boot, the pocket can stretch to allow movement of the battery pack for reducing the level of shock forces transmitted and further can contract, after impact, to return the battery pack to its predetermined position.
    Type: Grant
    Filed: March 21, 1996
    Date of Patent: April 29, 1997
    Assignee: Ski-Time Corporation
    Inventors: Michael E. Sunderland, Douglas R. Clark
  • Patent number: D346063
    Type: Grant
    Filed: May 6, 1992
    Date of Patent: April 19, 1994
    Assignee: Ski-Time Corporation
    Inventors: Douglas R. Clark, Michael E. Sunderland