Patents Assigned to Water Circulation Patents
  • Patent number: 4433863
    Abstract: In swimming pools the pop-up cleaning nozzles threaded into walls in the pool bottom are removable by a rotatable tool that has a body with axially extending lugs which project into corresponding openings in the nozzle head. A vacuum cup centrally of and recessed into the body attaches to the nozzle head for removing or replacing it.
    Type: Grant
    Filed: August 9, 1982
    Date of Patent: February 28, 1984
    Assignees: Lester R. Mathews, Lucien Warner, Water Circulation Patents
    Inventor: Lester R. Mathews
  • Patent number: 4371994
    Abstract: A rotational indexing nozzle arrangement has been devised wherein positive and consistent indexing action takes place under the influence of the application of fluid pressure and its relief by the action of an indexing or biased spring which becomes relaxed during the first stage (outward) movement of the indexing of the rotational nozzle head and which bites in and holds thereby causing the nozzle head to rotate during the second stage (inward) movement of the discharge head. The extent of the incremental indexing is determined by the length and angle of the biasing spring, or member. For improved operation a bearing of the ball or roller type may be disposed at the inward end of the nozzle arrangement whereby the resistance of the closing spring to rotation of the nozzle head is lessened.
    Type: Grant
    Filed: June 2, 1980
    Date of Patent: February 8, 1983
    Assignees: Lester R. Mathews, Lucien Warner, Water Circulation Patents, Inc.
    Inventor: Lester R. Mathews