Patents by Inventor Stephen R. Wassell

Stephen R. Wassell 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: 4942723
    Abstract: A solar powered lawnmower is disclosed comprising an electric motor, a rechargeable battery pack, and a panel of photovoltaic cells built into the handle of the lawnmower. The angle of the handle is arranged to ensure that the photovoltaic cells will receive nearly maximal solar exposure when the lawnmower is left in the sun with the angle of the handle approximately perpendicular to the sun's rays. In case of insufficient photovoltaic recharging, the solar powered lawnmower comprises the means to employ standard AC current to recharge the battery pack. The solar powered lawnmower is used to mow a lawn without generating air pollution or excessive noise pollution.
    Type: Grant
    Filed: September 21, 1989
    Date of Patent: July 24, 1990
    Inventor: Stephen R. Wassell
  • Patent number: 4935965
    Abstract: The ear muff according to the present invention is a water-repellent material lined with thin insulation sewn into the form of a pocket which fits around the ear of the wearer to protect the ear against cold, wind, snow, or the like without substantially impairing hearing. The ear muff is kept engaged to the ear by means of an elastic loop residing in the hem of the opening of the pocket which contracts around the base of the ear, and in addition, adjacent to the elastic within the hem, a malleable earlobe clasp which the wearer clamps around the earlobe, so that the ear muff can be used by people with attached earlobes as well as by people with unattached earlobes. The lined water-repellent material comprising the pocket plays no part in keeping the ear muff engaged to the ear, and thus is made of flexible material so that it can conform to various shapes of ears.
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: June 26, 1990
    Inventor: Stephen R. Wassell