Patent ID: 8011604

Claim:
A pop-up water jet assembly comprising: a substantially cylindrical housing having a vertical, central axis, an upper end, a top surface, a lower end, an exterior, an interior and a water inlet adjacent to said lower and communicating with the interior of the housing, said housing futher comprising threading on at least a portion of its exterior for rotatably securing said housing to the wall of a water reservoir; and a pop-up member having an upper portion, a top surface, a lower portion and an interior in communication with the interior of the housing, the pop-up member being movable relative to the housing between a raised position in which the upper portion of the pop-up member extends from the upper end of the housing and a lowered position in which the top surfaces of the housing and the pop-up member are substantially flush, the upper portion of the pop-up member disposed to prevent rotation relative to the housing interior, the upper portion of the pop-up member carrying a water outlet nozzle communicating with the interior of the pop-up member and having an axis at an angle to the axis of the housing to discharge water directed in a trajectory away from the pop-up jet assembly, the pop-up member being movable to its raised position in response to water flow admitted into the housing through the inlet and to its lower position under gravity bias upon termination of the water flow, wherein the upper end of the housing carries an outwardly extending, horizontal flange having a top surface defining the top surface of the housing, and wherein the flange has in inwardly extending portion defining an opening through which the pop-up member is adapted to extend, and wherein the pop-up member is keyed to the housing to prevent rotation thereof relative to the housing while permitting axial movement of said member relative to the housing, and wherein the pop-up member is keyed to the housing by a flat formed on an edge defining an opening in the inwardly directed flange and a corresponding flat being defined on a surface of the pop-up member.