Abstract: A rotary piston machine includes a first spheroidal element including pistons and/or cylinders and a second spheroidal element including pistons and/or cylinders, wherein the first element can move relative to the second element. The machine can be used as part of a pump, compressor, or engine.

Abstract: The invention concerns a self-powered remote control device comprising transmitting means, a feeder circuit connected to said transmitting means, a generator supplying electric power connected to the feeder circuit, and control means associated with the electric power generator. The generator comprises at least a piezoelectric element receiving mechanical stresses produced by actuating the control means and supplying electric power to the feeder circuit. The invention also concerns an apparatus comprising at least a self-contained control device actuated by a mechanical action member. The invention further concerns an electric installation comprising means for receiving signals transmitted by at least a self-powered control device.

Abstract: The invention concerns a self-powered remote control device comprising transmitting means, a feeder circuit connected to said transmitting means, a generator supplying electric power connected to the feeder circuit, and control means associated with the electric power generator. The generator comprises at least a piezoelectric element receiving mechanical stresses produced by actuating the control means and supplying electric power to the feeder circuit. The invention also concerns an apparatus comprising at least a self-contained control device actuated by a mechanical action member. The invention further concerns an electric installation comprising means for receiving signals transmitted by at least a self-powered control device.

Abstract: A mechanism for a circuit breaker includes a support lever insulated from a contact arm and a trip lever supported by a plate fitted with limited swivelling on a pivot. A mechanical link arranged between a toggle-joint and the contact arm includes a latching stop fixed on the plate. The stop is formed by a notch cooperating with a step of the trip lever to push the end of a toggle rod back to a retracted unlatched positon, as soon as the trip lever is actuated to the tripped position. The support lever is equipped with a locking arm having a sloping part cooperating with a pawl of the handle to form a high-speed contact closing device.