Patents by Inventor Ross W. Hoff

Ross W. Hoff 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: 5087031
    Abstract: An arm exercising apparatus for developing and strengthening a person's wrist and arm muscules and other parts of the body such as biceps, quadriceps, deltoids, triceps, etc. The exercising apparatus is designed to closely duplicate the sport known as arm wrestling. The exercising apparatus includes a handle that is pivotally connected to a sleeve wherein said sleeve is slideably mounted over a shaft. Said connection allows a twisting action of the wrist which closely duplicates those movements and forces actually experienced in arm wrestling and further allows the handle to be adjusted at the proper height for the individual user. The above described sleeve and shaft assembly is further pivotally connected to a rotatable pulley shaft, wherein said pulley shaft is fixedly connected to a pulley which is designed to accept predetermined weights as selected by the user, the weights being the elements which provide the resistive force required by the user.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: February 11, 1992
    Inventor: Ross W. Hoff
  • Patent number: 4811944
    Abstract: An arm exercising apparatus for developing and strengthening a person's wrist and arm muscles such as the biceps, quadriceps, deltoids, triceps, etc. The apparatus is designed to closely duplicate the sport known as arm wrestling. The exercising apparatus includes a handle that is pivotally connected to a sleeve wherein said sleeve is slideably mounted over a rod. Said connection allows a twisting action of the wrist which closely duplicates those movements and forces actually experienced in arm wrestling and further allows the handle to be automatically adjusted at the proper height for the individual user. The above described sleeve and bar assembly is further connected to a rotatable pulley shaft, wherein said pulley shaft is designed to accept predetermined weights as selected by the user, the weights being the elements which provide the resistance required by the user. The arm exerciser may be attached to a table top or platform when in use.
    Type: Grant
    Filed: January 26, 1988
    Date of Patent: March 14, 1989
    Inventor: Ross W. Hoff