Patents Assigned to H. & D. E. Watts
  • Patent number: 4050475
    Abstract: The invention provides a hot and cold water mixing and flow control faucet of the hydraulically unbalanced piston type. A control stem of the piston passes through a seal of a self-energizing nature for connection to an actuating member operative to rotate and reciprocate the piston. The piston is substantially pressure balanced in the closed position by virtue that shut-off of the faucet is effected at the inlet ports, and is biased axially in the open position by virtue that the opposed pressure-effective areas of the piston are unequal. These opposed areas of the piston differ by an amount corresponding to the cross sectional area of the control stem, and the diameter of the stem is limited to a maximum of 6 mms. to correspondingly limit the force biasing the piston axially.
    Type: Grant
    Filed: August 19, 1975
    Date of Patent: September 27, 1977
    Assignee: H. & D. E. Watts Limited
    Inventor: Horace Watts
  • Patent number: 4040446
    Abstract: The invention is concerned with a mixing tap or valve of the kind having a valve body with a cylindrical chamber therein and laterally disposed inlets for respective hot and cold water supplies and at least one outlet for said supplies or a mixture thereof, and complementary valve means in the chamber adapted to cooperate with the inlets or with the inlets and the outlet.
    Type: Grant
    Filed: May 10, 1974
    Date of Patent: August 9, 1977
    Assignee: H. & D. E. Watts
    Inventor: Horace Watts
  • Patent number: 3981330
    Abstract: A fluid mixing valve comprises a body defining a cylindrical chamber having two spaced-apart inlets and an outlet spaced axially from the inlets, a valve closure element and a mixture control element in the chamber and a valve spindle connected to the closure and control elements. Axial movement of the spindle moves the closure element in a mode to open or close the inlets. Rotation of the actuator, when the inlets are open, rotates the mixture control element so as to control the relative degree of flow through the inlets.
    Type: Grant
    Filed: August 5, 1974
    Date of Patent: September 21, 1976
    Assignee: H. & D. E. Watts Limited
    Inventor: Horace Watts