×

Valve for water system

  • US 5,452,744 A
  • Filed: 04/29/1994
  • Issued: 09/26/1995
  • Est. Priority Date: 04/29/1994
  • Status: Expired due to Term
First Claim
Patent Images

1. A valve for a water filtration system having a housing and a piston contained within the housing, comprising:

  • a) the housing having a series of ports including upper ports in a side thereof and lower ports in a base thereof;

    b) the piston having a series of apertures to cooperate with the upper ports;

    c) the piston being movable within the housing about a piston axis;

    d) the series of apertures, the series of lower ports and the series of upper ports cooperating to form a first position, a second position, a third position and a fourth position;

    e) the series of apertures including a first aperture, a second aperture, a third aperture and a fourth aperture;

    f) the series of lower ports including a first lower port, a second lower port, a third lower port and a fourth lower port;

    g) the series of upper ports including a first upper port, a second upper port, a third upper port and a fourth upper port;

    h) the first upper port, the first lower port, and the first aperture cooperating to form a first position to serve as a bypass position;

    i) the second upper port, the second lower port, and the second aperture cooperating to form a second position to serve as a shut-off position;

    j) the third upper port, the third lower port, and the third aperture cooperating to form a third position to serve as a filter position;

    k) the fourth upper port, the fourth lower port, and the fourth aperture cooperating to form a fourth position to serve as a shutoff position;

    l) the bypass position serving to cause the water filtration system to be bypassed;

    m) the shut-off position serving to cause the water filtration system to be shutoff;

    n) the filter position serving to cause the water filtration system to operate; and

    o) the back-flush function serving to cause the water filtration system to be reactivated.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×