Patents by Inventor Raymond A. Rahn

Raymond A. Rahn 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: 4559517
    Abstract: A warning system to be mounted on the front exterior of a school bus to provide two signals to the passengers. One signal is a flashing red light accompanied by an intermittent horn and the second is a steady green light both of which can be seen and heard by children boarding or leaving the bus on both sides of the street to tell them whether it is unsafe or safe to cross the road. This warning system is controlled by the driver allowing him to direct the children safely across the street.
    Type: Grant
    Filed: August 12, 1983
    Date of Patent: December 17, 1985
    Inventor: Raymond A. Rahn
  • Patent number: 4513471
    Abstract: A combined sweeper blower for sweeping and collecting waste material for use with a utility vehicle powered by the mechanical power take-off of the vehicle. A hopper with a rear opening for collecting the swept waste material is mounted pivotably upon the vehicle and connected to a combined sweeper blower by a flexible duct. A rear cover closes the hopper rear opening excepting the duct opening. The sweeper blower mechanism is towed behind the vehicle by articulated links and mounted on height adjustable wheels. In use, the vehicle tows the sweeper blower over terrain to be swept while the sweeper blower sweeps and blows material from the ground through the flexible duct into the hopper.
    Type: Grant
    Filed: October 31, 1983
    Date of Patent: April 30, 1985
    Inventor: Raymond A. Rahn