Abstract: A regenerative brake of the present invention presents a hydraulic device disposed in a front hub of a bicycle wheel. The device allows the bicycle to recapture part of the kinetic energy that would otherwise be lost when braking and make use of that power either by storing it for future use or feeding it back into a power system to be used. The hydraulic device may also be stored in a rear hub of the bicycle wheel.

Abstract: A multiple flow sink counter-top water sprayer and filter system includes a selectably by-passable filter cartridge. The system includes a housing having an upstream portion and a downstream portion, defining, through these portions, channels for the flow of water. An inlet to the upstream portion permits flow of water into the channels, and respective outlets in the downstream portion of the housing discharges respective flows of water from the channels. Also provided is an annular water-purifying cartridge having a tubular shell including concentric interior and exterior walls to contain a filter material, the cartridge including an axial bore running lengthwise of the cartridge and the exterior wall of the cartridge secured within the upstream portion at a radial offset from an interior surface of the upstream portion of the housing to establish an annular path of flow which by-passes the cartridge.