Patents by Inventor Edward F. Neefeldt

Edward F. Neefeldt 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: 6799455
    Abstract: A tire pressure monitor continuously indicating to a vehicle operator whether or not each tire on the vehicle, including a spare if present, is adequately inflated for safe “over-the-road” operation. The monitor includes an indicator associated with each tire to indicate when the air pressure in any individual tire on the vehicle is not inflated to a pressure adequate for safe operation. The monitor also includes a battery operated pressure sensitive radio frequency transmitter mounted on the outer end of a conventional tire valve stem and includes an antenna extending into each tire for transmitting a signal to an indicator assigned to each tire without interference from metal wheel components. The indicators are mounted on the instrument panel or dashboard of the vehicle. The signal transmitted from the transmitter on each tire valve actuates only the indicator associated with and receiving a signal from only the transmitter assigned to each tire.
    Type: Grant
    Filed: December 5, 2002
    Date of Patent: October 5, 2004
    Inventors: Edward F. Neefeldt, David Lundquist
  • Patent number: 4342126
    Abstract: A windshield wiper boot constructed of molded rubber is designed to be fitted over and substantially cover a windshield wiper with the exception of the wiper blade. The boot serves the purpose of preventing the accumulation of snow, ice and other materials within the flexure portion of the windshield wiper so as to eliminate interference by these materials with the flexural movement of the wiper blade over a windshield.
    Type: Grant
    Filed: December 2, 1980
    Date of Patent: August 3, 1982
    Inventor: Edward F. Neefeldt