293results about How to "Prevent rain" patented technology

The invention discloses a vehicle unmanned aircraft and an automatic umbrella opening system and method, wherein the vehicle unmanned aircraft comprises an unmanned aircraft body, an unmanned aircraft controller, a first drive mechanism, a propeller, a second drive mechanism, an umbrella body and a wireless communication module; the unmanned aircraft controller is connected with the first drive mechanism, the second drive mechanism and the wireless communication module; and the wireless communication module is used for carrying out wireless communication with a vehicle, wherein when the vehicle unmanned aircraft opens the umbrella for a passenger, the unmanned aircraft controller controls the first drive mechanism to drive the propeller to drive the unmanned aircraft body to take off from the vehicle to the place above a vehicle door or the passenger and controls the second drive mechanism to drive the umbrella body to be opened from a closing state to an opening state, and the umbrella body is utilized for opening the umbrella for the passenger; and after the vehicle unmanned aircraft finishes umbrella opening, the unmanned aircraft controller controls the second drive mechanism to drive the umbrella body to close up to the closing state from the opening state and controls the first drive mechanism to drive the propeller to drive the unmanned aircraft body to return on the vehicle for landing.

A method and apparatus for centrifugal casting of metal articles uses a rotating mold body that can be pivoted from a vertical orientation to a horizontal orientation during the centrifugal casting of the metal article. The resulting metal article has a closed end and an open end defining a hollow cavity. The mold body has a closed end that is oriented in a vertical position with the longitudinal axis extending vertically. While the mold body is rotated, an amount of molten metal is introduced into the mold body so that the molten metal is distributed along the closed end of the mold body. In one embodiment, the bottom end of the mold body has a frustoconical shaped surface defining the mold cavity. The mold body is then pivoted to a horizontal position while continuously rotating to distribute and cast the metal against the inner surface of the mold body. In one embodiment, the mold body has a refractory lining of a compacted refractory material. The refractory material is introduced into the rotating mold and a blade is contacted with the layer of the refractory material formed on the inner surface while the mold is rotated in a first direction to compact and densify the layer of particles with a flat end of the blade. The rotation of the mold body is then reversed and the sharp edge of the blade is contacted with the compacted layer to shape and contour the mold lining.

A spectator rain shelter for personal use at outdoor events for protection from inclement weather includes a portable housing made of a transparent material with a retractable front opening to serve as a window, thereby allowing a person to avoid getting rained on during inclement weather while still enjoying the event they are attempting to watch.

A fruit bag having a body and an entrance formed on the body to insert young fruit thereinto, the body having a front surface, a back surface, and side surfaces is provided. The fruit bag includes: a cover protruding from the front surface to cover the entrance; multiple folding portions formed by folding each side surface at least one or more times; and an opening part attached to the form of a band to the end portion of the body forming the entrance and having flat portions attached to the front surface and the back surface and grasping portions attached to the side surfaces, the grasping portions forming hinges together with the multiple folding portions so that if a pressure is applied to the grasping portions, the entrance is expanded by means of the flat portions.