Patents by Inventor Rafael E. Lopez

Rafael E. Lopez 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: 4337937
    Abstract: A rotatively manipulable arm, hand and wrist exercise device comprising at least two grippable handle elements surmounted upon a longitudinally extended shaft having means at one end thereof to retain said handles in abutting relationship. Said shaft further projects beyond the handle assembly, and is threaded along a portion of its projecting or distal end whereby to conformably accommodate thereon an axially adjustable housing. By manually adjusting said housing, friction-producing means are caused to engage and sufficiently compress the handle elements whereby to create torsional resistance opposing the relative counter rotation of said handles.
    Type: Grant
    Filed: January 16, 1980
    Date of Patent: July 6, 1982
    Inventor: Rafael E. Lopez