| 摘要 |
An umbrella with pneumatic activation, specifically a portable, foldable umbrella, for the protection of persons from the rain and sun, and to be employed in fixed installations of one or more umbrellas as well, to protect crops, objects, or surfaces that require controlled protection, outdoor tables, beaches, and patios as principal examples of operation and use with individual or centralized control. When connected together, a group of umbrellas are controlled with a unified command, or through an automated system with temperature and water sensors. An automatic compressor could be provided to activate and deactivate the system, and it also could be activated within a closed circuit with a pressurized air storage chamber. A pneumatic umbrella that, in addition to the handle, or base, has a complete pneumatic circuit with entry and exit of air, equipment for pumping the air, a valve controlling the flow of air to either open or close the umbrella through internal conduits which are connected to extendable stems and are held together by a threaded system.
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