Patents by Inventor Michael G. Kaffka

Michael G. Kaffka 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: 5890233
    Abstract: A dual visor assembly that is designed for and is attachable to any light sports helmet. The lenses are interchangeable by being attached to offset pivoting arms rotating about a common shaft on each side of the helmet. The lenses when raised are locked in the inoperative position and can be lowered by touching a release knob just behind the pivot shaft on either side of the helmet. Each side releasing a different lens.
    Type: Grant
    Filed: November 6, 1996
    Date of Patent: April 6, 1999
    Inventor: Michael G. Kaffka
  • Patent number: 4768293
    Abstract: Apparatus for blowing air into footwear for warming and/or drying the footwear. The apparatus has a seal for sealing an open or ankle portion of the footwear, and a duct assembly having intake and exhaust ports, and a discharge tube. The seal encircles the discharge tube and has a range of effective diameters to accommodate open portions of footwear of different sizes. The discharge tube is telescopically extensible and retractable of the seal to accommodate footwear of different heights and to retract within the seal for storage. A fan, communicating with the duct assembly and a heating element, draws air into the intake duct and discharges it through the discharge tube into the shoe. The apparatus can be used to warm and/or dry footwear ranging from high stiff ski boots to low soft running shoes, and accommodates a wide range of sizes of such footwear.
    Type: Grant
    Filed: May 11, 1987
    Date of Patent: September 6, 1988
    Inventor: Michael G. Kaffka