Patents by Inventor Frank Volin

Frank Volin 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).

  • Wheelchair width adjuster
    Patent number: 4648615
    Abstract: A low effort high mechanical advantage occupant-operated rotary lever near one arm rest of a folding wheelchair is connected through a short cable to a longitudinal seat frame member of the wheelchair. Manual rotation of the lever in one direction effects narrowing of the wheelchair sufficiently to allow passage through restricted areas.
    Type: Grant
    Filed: November 6, 1985
    Date of Patent: March 10, 1987
    Inventor: Frank Volin
  • Wheelchair width adjuster
    Patent number: 4500109
    Abstract: The width of a laterally foldable wheelchair can be reduced by the chair occupant by manipulation of a hand lever on one side of the chair frame which is operable to elevate a flexible seat support member thereby inducing partial folding of the chair to reduce its width. The weight of the occupant on the chair seat tends to bias the hand lever toward its inactive stowed position.
    Type: Grant
    Filed: December 15, 1982
    Date of Patent: February 19, 1985
    Inventor: Frank Volin
  • Detachable wheelchair backrest
    Patent number: 4375295
    Abstract: The commonplace laterally collapsible wheelchair is rendered more convenient and versatile by the addition thereto of several add-on attachments which can be readily installed by the purchaser of the chair at minimum cost and without structural alteration of the basic wheelchair. One or more of the attachments can be sold in "do-it-yourself" kits. The attachments include a chair width adjustment, curb climbing wheels, a quick removable seat back, wheel spoke protectors and a front wheel adjuster to compensate for inclines during use of the wheelchair.
    Type: Grant
    Filed: January 21, 1981
    Date of Patent: March 1, 1983
    Inventor: Frank Volin
  • Wheelchair convenience attachments
    Patent number: 4264085
    Abstract: The commonplace laterally collapsible wheelchair is rendered more convenient and versatile by the addition thereto of several add-on attachments which can be readily installed by the purchaser of the chair at minimum cost and without structural alteration of the basic wheelchair. One or more of the attachments can be sold in "do-it-yourself" kits. The attachments include a chair width adjustment, curb climbing wheels, a quick removable seat back, wheel spoke protectors and a front wheel adjuster to compensate for inclines during use of the wheelchair.
    Type: Grant
    Filed: April 20, 1979
    Date of Patent: April 28, 1981
    Inventor: Frank Volin