The provision of a one-way clutch having a high strength and a small size and manufactured significantly readily. In another embodiment the invention relates to a magnetic gradient cancellation delay line including two coils connected in series at a junction and non-inductively wound to cancel induced currents from magnetic gradient. The invention in turn may reduce computational complexity of certain coding and decoding operations by two orders of magnitude or more for a given signal vector input. An inlet check valve, which controls an entry of fluid into the piston, is located below the fluid level. Each membrane is constituted by carbon fiber reinforcement stiffened by a carbon matrix and presents porous portion that is permeable to ions and impermeable to the or each gaseous species, given off at the electrolytes. The inner face being coated in succession, starting from the substrate, with a hard enamel base, which is rough and contains no lead or cadmium, and then with a non-stick coating covering the hard layer.