Abstract: An exemplary platform independent sensing platform system and method that streamline the sensing operations of unmanned aerial-amphibious vehicles for remote or wide area analysis and/or monitoring of a body of water. The exemplary sensing platform system and method employ a remote sensing payload that wirelessly tethers to an edge sensing platform to operate synchronously with one another as the remote sensing payload samples a body of water at different depths and at different locations while being deployed and extracted from a given different locations by the unmanned aerial-amphibious vehicle.

Abstract: An exemplary platform independent sensing platform system and method that streamline the sensing operations of unmanned aerial-amphibious vehicles for remote or wide area analysis and/or monitoring of a body of water. The exemplary sensing platform system and method employ a remote sensing payload that wirelessly tethers to an edge sensing platform to operate synchronously with one another as the remote sensing payload samples a body of water at different depths and at different locations while being deployed and extracted from a given different locations by the unmanned aerial-amphibious vehicle.

Abstract: A safety device for use in combination with elongated coil springs substantially balancing the door weight for ease of opening and adapted to urge said door toward an open position after partial opening movement. The safety device includes an elongated flexible member extending longitudinally substantially axially through the elongated spring with ends thereof beyond the spring ends as with one end fixedly mounted adjacent a fixed end of the spring and the other end thereof resiliently mounted adjacent the other end of the spring whereby separate portions of the spring will be retained on the elongated flexible member in the event of breakage of the coil spring.