Abstract: An automatic robotic lawn sprinkler providing a water powered articulated, actuation and control system aiming a continuous stream of water to all coordinates within a polar coordinate system comprising a manually programmable base assembly for anchoring to the ground and containing size specific range data, an azimuth rotor assembly rotatably mounted to the base in a horizontal plane, a range rotor assembly rotatably mounted in a vertical plane substantially perpendicular to the azimuth rotor an azimuth actuation and control system range actuation and control system, and a mechanism for variably controlling range rate and flow volume.

Abstract: An automatic robotic lawn sprinkler providing a water powered, articulated, actuation and control system aiming a continuous stream of water to all coordinates within a polar coordinate system comprising a manually programmable base assembly for anchoring to the ground and containing site specific range data, an azimuth rotor assembly rotatably mounted to the base in a horizontal plane, a range rotor assembly rotatably mounted in a vertical plane substantially perpendicular to the azimuth rotor, an azimuth actuation and control system, range actuation and control system, and a mechanism for variably controlling range rate and flow volume.

Abstract: A precast construction panel for buildings and a method of manufacturing the panel are disclosed. The panel is lightweight and possesses full structural integrity with the ability to serve as a solar energy collector and/or storage module alone or in a system with other panels and active solar collection devices. The panel includes an internal, concealed containment element for the storage and circulation of a thermally efficient fluid, such as water. In the casting of the solar construction panel, the fluid-filled containment element serves as a core around which cementious material, such as concrete, is placed. The panel is provided with internal reinforcement as required.