Abstract: A submersible electric D.C. motor is provided which has a housing that seals the motor from the surrounding water and holds in a controlled atmosphere which is made to be low in oxygen content and to have free water vapor. Magnetic means are provided to transmit mechanical energy through the housing and liquid means are provided to remove heat from the motor.

Abstract: A skimming device which is arranged to be positioned within the wall of a receptacle for a body of water such as a swimming pool or spa, the device including a housing which has a horizontal inlet portion with an opening therein arranged to be positioned in open communication with the body of water, the housing having a downwardly extending vertical discharge chamber having an inlet which is of lesser cross-sectional area than the inlet of the horizontal inlet portion, a strainer basket proportioned to be received through the opening in the horizontal inlet and constructed and arranged to be snap-in seated in the vertical discharge portion, with a float pivotally secured to the strainer basket to substantially cover the basket when in a closed first position and also proportioned to be received through the opening, the float dimensions being larger than the opening to the vertical discharge chamber, the arrangement being such that the basket and the float are removable as a unit through the horizontal inlet p

Abstract: A hydro-air jet assembly wherein a ball-shaped element has a first passageway therethrough communicating with an air supply and a second passage therethrough communicating with a water supply which is rotatably mounted in a housing and has a venturi nozzle secured to the ball to corotate therewith but which is adjustable in an axial direction with respect to the ball member providing constant water and air flow rates through the ball and nozzle assembly regardless of the angular position of the ball. A venturi nozzle holder is used which provides a novel means of securing the adjustable venturi nozzle to the ball member.

Abstract: A tape joint for cylindrical members is provided wherein a flexible tape member is inserted into a cavity between telescoping first and second cylindrical members in a twisted manner so as to lock the members together as a unit. The tape member is manually slip fitted into position and is provided with a handle for aiding in the insertion and removal of the tape member.