Abstract: An embodiment includes a valve with a filter in which the flow of water through the valve is stopped by lowering a filter within the valve. This movement of the filter allows a poppet valve to close, stopping the flow of water. Subsequent raising of the filter holds the poppet valve in the open position, allowing the flow of water through the filter for further use. Embodiments are found in drinking fountains and facilitate the maintenance of the drinking fountain by allowing a technician to shut off the water using a screwdriver without requiring the removal of the fountain cover.

Abstract: An electro-expulsive actuator capable of operating while encased within a flexible member is provided. The electro-expulsive actuator is designed to be resiliently flexible such that the flexible member remains fully deformable along its length. In addition, rather than striking the surface of or creating a shockwave within the flexible member, the actuator is disposed within the flexible member such that the deformation of the electro-expulsive actuator itself causes deformation of the flexible member thereby causing unwanted build-up of residues on the outer surface of the flexible member to be disrupted.

Abstract: An embodiment includes a valve with a filter in which the flow of water through the valve is stopped by lowering a filter within the valve. This movement of the filter allows a poppet valve to close, stopping the flow of water. Subsequent raising of the filter holds the poppet valve in the open position, allowing the flow of water through the filter for further use. Embodiments are found in drinking fountains and facilitate the maintenance of the drinking fountain by allowing a technician to shut off the water using a screwdriver without requiring the removal of the fountain cover.