×

Hydraulic valve controlled by a photoelectric cell and operated by an electric motor

  • US 6,082,703 A
  • Filed: 11/04/1998
  • Issued: 07/04/2000
  • Est. Priority Date: 08/08/1997
  • Status: Expired due to Fees
First Claim
Patent Images

1. A hydraulic valve connected to, and controlled by, a photoelectric cell connected to an electric motor (13), the valve comprising:

  • a body (1),an entry duct (2) formed in the body wherein pressurized water enters the valve,a first chamber (6) and a second chamber (8) disposed in the body, a separation wall between the first chamber and the second chamber,a hole (9a) being formed in the separation wall wherein the first chamber and the second chamber are in communication,an exit duct (3) formed in the body and communicating with the first chamber,a piston (5) disposed in the first chamber and received in the exit duct, the piston being slidably mounted on a hollow pin (7) having an axis,a duct (7a) formed in the hollow pin, the duct communicating with the exit duct and the second chamber,a pilot device disposed in the second chamber, the pilot device having an oscillating member (15), the oscillating member moving through an angle in a plane transverse to the axis of the hollow pin and opening and closing the duct formed in the hollow pin such that the pilot device controls the flow of water through the duct in the hollow pin, affecting hydrostatic pressure at the exit duct such that the piston is moved to obstruct the exit duct.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×