Patents by Inventor Frank Chain

Frank Chain 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).

  • Drag reducing apparatus
    Patent number: 4214787
    Abstract: A pair of trim panels are pivotally connected to the rear end of a vehicle to reduce air drag when the vehicle is in motion, with control apparatus connected between each trim panel and the rear end of the vehicle for maintaining the trim panel in an operating position when the vehicle is moving at a rate exceeding a predetermined minimum velocity, and for maintaining the trim panels in a storage position when the vehicle is moving at a rate not exceeding the minimum velocity.
    Type: Grant
    Filed: December 7, 1977
    Date of Patent: July 29, 1980
    Inventor: Frank Chain