Patents Assigned to Konan Denki Kabushiki Kaisha
  • Patent number: 5074468
    Abstract: An automatic control system, having a main control system with wireless communication equipment, with a water sprinkling device disposed in an area to be sprinkled with water and adapted to sprinkle water over this area, and water piping installed between a water source and the water sprinkling device, and adapted to distribute water from the water source to the water sprinkling device. A water sprinkling control system is installed on the ground in a position close to the water sprinkling device and adapted to control the water sprinkling device. The water sprinkling control system includes a hydraulic valve disposed in the water piping close to the sprinkling device which has a water channel connecting an inflow passageway with a flow passageway connected to a pilot line. A two-way pilot solenoid valve is connected at one port thereof to the hydraulic valve through the pilot line, and at the other port to a drain piping.
    Type: Grant
    Filed: April 17, 1990
    Date of Patent: December 24, 1991
    Assignees: Sekisui Koji Kabushiki Kaisha, Konan Denki Kabushiki Kaisha
    Inventors: Harushi Yamamoto, Naoki Otsuka