Abstract: A drain sump includes a secondary chamber for providing an alternate source of water for the main drain to pull water from, thereby limiting the suction force created when the flow of water is obstructed. In a preferred embodiment, the two chambers within the drain sump are partitioned by a septum wall, which provides a passage for a drain pipe extension at the center of the septum wall and further includes a plurality of venting channels for ideal water flow between the two chambers. Each chamber is in open fluid flow communication with the pool water via the drain grate. Relief hole passages are included on the drain pipe extension for providing open fluid communication between the secondary chamber and the water flow passage. The drain pipe extension may further include two 90 degree bends for restricting access to the water flow passage of the drain pipe extension.

Abstract: A drain sump includes a secondary chamber for providing an alternate source of water for the main drain to pull water from, thereby limiting the suction force created when the flow of water is obstructed. In a preferred embodiment, the two chambers within the drain sump are partitioned by a septum wall, which provides a passage for a drain pipe extension at the center of the septum wall and further includes a plurality of venting channels for ideal water flow between the two chambers. Each chamber is in open fluid flow communication with the pool water via the drain grate. Relief hole passages are included on the drain pipe extension for providing open fluid communication between the secondary chamber and the water flow passage. The drain pipe extension may further include two 90 degree bends for restricting access to the water flow passage of the drain pipe extension.

Abstract: An emergency sail system for disabled watercraft comprises a mast receptacle for interfacing with the watercraft structure and a multi-segmented main mast supported by the mast receptacle in a substantially vertical orientation and removable therefrom. A sail assembly is affixed to the main mast with a rotational joint wherein the sail assembly is rotatable about a vertical axis of the main mast in a first direction and is also rotatable about a horizontal axis substantially at right angles with respect to the main mast in a second direction.

Abstract: A safety device for use in a fluid transfer and/or circulation system of the type which uses a pump to draw water from a reservoir through one or more intake lines each extending from an open end at the reservoir to the pump intake. The safety device connects to the fluid transfer/circulation system and includes a sensor, a triggering mechanism, and a vacuum breaker. When the pump is operating, the sensor monitors one or more conditions of the system. When one or more of the monitored conditions deviates outside of a normal operational range, as a result of an obstruction of any one or more of the open ends of the intake lines, the triggering mechanism triggers the vacuum breaker to eliminate negative pressure in the system by introducing air from atmosphere into the intake lines, thereby removing suction at the open ends of the intake lines. The safety device may further activate warning devices including audible and visible alarms to indicate that the system has been deactivated.

Abstract: A safety device for use in a fluid transfer and/or circulation system of the type which uses a pump to draw water from a reservoir through one or more intake lines each extending from an open end at the reservoir to the pump intake. The safety device connects to the fluid transfer/circulation system and includes a sensor, a triggering mechanism, and a vacuum breaker. When the pump is operating, the sensor monitors one or more conditions of the system. When one or more of the monitored conditions deviates outside of a normal operational range, as a result of an obstruction of any one or more of the open ends of the intake lines, the triggering mechanism triggers the vacuum breaker to eliminate negative pressure in the system by introducing air from atmosphere into the intake lines, thereby removing suction at the open ends of the intake lines. The safety device may further activate warning devices including audible and visible alarms to indicate that the system has been deactivated.

Abstract: A safety device for use in a fluid transfer and/or circulation system of the type which uses a pump to draw water from a reservoir through one or more intake lines each extending from an open end at the reservoir to the pump intake. The safety device connects in-line with the fluid transfer/circulation system, between the open ends of the intake lines and the pump and includes a vacuum pressure sensor, an analyzer and controller, a relay, and a vacuum breaker. Each time the pump is activated, the device analyzes negative pressure levels throughout a start-up period to establish a normal operating pressure window for the particular system.

Abstract: A safety device for use in a fluid transfer system for a swimming pool or similiar application, having a pump which draws water from a reservoir through one or more intake lines each extending from an open end at the reservoir to the pump intake. The device analyzes negative pressure levels in the system and, upon detecting a negative pressure level being outside of a selected operational range, the device deactivates the pump and triggers a vacuum breaker device to eliminate negative pressure in the system, by introducing air from atmosphere into the intake lines thereby removing suction at the open ends of the intake lines. The safety device may further activate warning devices including audible and visible alarms to indicate that the system has been deactivated.

Abstract: A screwdriver includes a solid core handle formed of a light conductive material, a light source and a power source encapsulated within the solid core handle and a shaft attached to and extending outwardly from a first end of the handle and terminating at a free distal end. Operation of a switch on the handle to an on position serves to complete a circuit, activating the light bulb and, thereby directing light through an upper portion and out from the first end of the handle towards the distal end of the shaft.