Abstract: A precipitation sensor control for automatic sprinkler systems assesses precipitation in the atmosphere in order to prevent the use of excess water. The precipitation sensor control includes a translucent prism, at least one light generation source, at least one photo-sensor, and a sprinkler system actuator. A light emission from the at least one light generation source. The at least one light generation source is in optical communication with the at least one photo-sensor where the light emission is directed across and through a first base surface of the translucent prism then reflects through the translucent prism. The light emission is reflected into the at least one photo-sensor. As precipitation collects onto the first base surface, the light emission is obscured from the at least one photo-sensor. When the light emission is obscured, the sprinkler system actuator deactivates the automatic sprinkler system, preventing a waste for drinking water.

Abstract: A gastric tube positioning method includes an improved check valve operative in cooperation with a gastric tube positionable within a patient. Should mis-alignment of the tube occur, including introduction of the tube into the lung region of a patient, the other distal end of the tube positioned within a container of fluid will emit a plurality of bubbles indicating lung positioning of the tube wherein the improved check valve assembly prevents said fluid from introduction into the lung cavity.