Abstract: A support has an expandable enclosure for use in an excavation. The enclosure is expandable, on introduction of a fluid to the enclosure, from an unexpanded configuration to an expanded configuration. The enclosure is configured such that when the enclosure is in the expanded configuration, and is located in the excavation, pressure exerted by the fluid on an internal surface of the enclosure is sufficient to provide support for at least one wall of the excavation.

Abstract: Over the last few decades there has been major innovation in devices that use electricity (cell phones, computers, tablets, televisions), however, there has been little innovation in the mobility and accessibility of electricity itself on the small scale. At the moment, electricity is generally non-transferable on a personal level—if two individuals had cellphones, one at 100% and another at 0%, they could not share the available power between them. The present invention offers a solution to the issue of transferring electricity between cellular devices which enables electricity to be sharable and transferable in small scale daily situations.

Abstract: At the moment, electrical energy production had become a rising problem due to the depletion of fossil fuels, increasing world population, and growing energy consumption per capita. Despite growing research in traditional methods of exploiting electrical energy (steam, wind, water, and nuclear electrical plants) less attention has been given in using human movement as energy source. The present invention will attempt to convert human body movement into electrical energy using electric dynamos.

Abstract: A support has an expandable enclosure for use in an excavation. The enclosure is expandable, on introduction of a fluid to the enclosure, from an unexpanded configuration to an expanded configuration. The enclosure is configured such that when the enclosure is in the expanded configuration, and is located in the excavation, pressure exerted by the fluid on an internal surface of the enclosure is sufficient to provide support for at least one wall of the excavation.