Patents by Inventor Robert F. Hand

Robert F. Hand 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).

  • Retrofittable chair lifting and tilting device
    Patent number: 5294179
    Abstract: A power lifting and tilting device is more universally adaptable for economic retrofitting to most types of chairs as assists for the infirm. Little or no floor clearance requirements are achieved with power driven rollers traveling oppositely inclined surfaces of the device to produce lifting and tilting action for alighting from and occupying the chair.
    Type: Grant
    Filed: May 11, 1992
    Date of Patent: March 15, 1994
    Assignee: Hand Machine Company, Inc.
    Inventors: Arnold H. Rudes, Robert F. Hand