Rotarex S.a.

Luxembourg Patent Company S.a.

Other

Sellen, Stephan

Stephan Sellen

Philippe Schmitz

Thomas Andreas

Georges Barthelemy

Etienne Kaichinger

A transmission unit for a vehicle equipped with propulsion pedals, comprising: a central shaft; a transmission output shaft coaxial with the central shaft; a planetary gear unit carried by the central shaft and configured for transmitting mechanical power from an input shaft of the planetary gear unit to the transmission output shaft; an electric motor unit; a housing carrying the central shaft, the transmission output shaft and the planetary gear unit; the electric motor unit is coaxial with the central shaft and comprises an output shaft fixedly coupled to the input shaft of the planetary gear unit, and the central shaft is coupled to the output shaft of the electric motor unit and the input shaft of the planetary gear unit by a freewheel.

Transmission unit for vehicle equipped with propulsion pedals

A valve for compressed gas, comprising a body extending longitudinally, with a gas inlet at a lower end of the body, a gas outlet and a gas passage fluidly interconnecting the gas inlet and the gas outlet; a shut-off device housed in the body and configured for selectively shutting-off and opening the gas passage; a lever pivotally mounted on the body, at an upper end of the body, and configured for actuating the shut-off device; a hook pivotally mounted on the lever for engaging with a counter-shape on the body and thereby holding the lever in a folded position along the body; wherein the upper end of the body comprises a cylindrical wall delimiting an upper bore, the counter-shape being an upper edge of the cylindrical wall.

Lever valve with securing hook

A valve for a fluid, comprising: a body with an inlet, an outlet and a passage fluidly interconnecting the inlet and outlet; a shut-off device housed in the body and configured for selectively opening and closing the passage, the shut-off device comprising a main seat, a main closing element forming a channel extending there through and a pilot seat, a pilot closing element housed in the main closing element, a first compression spring, and a second compression spring; an actuating device of the shut-off device. The second compression spring is operatively mounted between the main closing element and the body and the first compression spring is stronger than the second compression spring.

Differential pressure opening and excess flow closing valve for gas cylinder

A valve comprising a body with an inlet, an outlet and a passage fluidly interconnecting the inlet and outlet; a shut-off device of the passage, with an actuating member movable along a longitudinal axis; a hand operating device of the actuating member, for selectively opening or closing the passage, and comprising a support element and a rotating element with at least one contact surface configured for sliding along at least one ramped surface on the support element, or vice versa, so as to convert rotation of the rotating element into a translation of the actuating member; wherein the body comprises two arms extending longitudinally and diametrically opposed relative to the longitudinal axis, with distal ends holding the support element.

Gas cylinder valve with radially extending operating handle

A device for regulating the pressure of a compressed gas, comprising a body with a gas inlet, a gas outlet and a gas passage fluidly interconnecting the inlet and outlet; a mobile element carrying a shutter cooperating with a seat in the gas passage, the shutter and the seat forming a regulating valve; a hand-wheel operatively linked to a spindle rotatably mounted on the body; wherein the spindle is hollow and houses a spigot with a cam, the spigot being linked in rotation with the spindle and cooperating with a counter-cam spigot movable in translation but not in rotation relative to the body, and acting on the mobile element or on a shut-off valve for selectively shutting-off and opening the gas passage.

Gas pressure reducer with cam commanded shut-off valve

A device for regulating the pressure of a compressed gas, comprising a body with a gas inlet, a gas outlet and a gas passage; a mobile element biased by a main spring and carrying a shutter cooperating with a seat in the gas passage, the shutter and the seat forming a regulating valve, a shut-off valve with a shutter and a seat in the gas passage upstream of the regulating valve; an actuation assembly of the shut-off valve; wherein the shutter of the shut-off valve comprises a stem extending through the mobile element and the shutter of the element, for cooperating with the actuation assembly located in front of the element.

Gas pressure reducer with integrated shut-off valve

A valve for pressurized gas or chemical agent. The valve comprises: a body with: an inlet, an outlet, and a passage which connects the inlet with the outlet and which includes a seat]. The valve further comprises a sliding piston able to engage with the seat in order to close the passage and a telescopic extension sliding against the passage in order to guide the piston in the passage at least between the open position and the closed position. The pressure difference between opposite faces of the piston pulls away the piston and the telescopic extension from the seat in order to open the passage, the passage remaining closed under pressure equilibrium. Additionally, a fire extinguishing system.

High pressure valve with telescopic piston

The invention is directed to a method for improving the fatigue behavior of the body () of a gas valve, the body comprising at least two bores () and at least one bore intersection () defining an internal volume; wherein the method comprises the following step: subjecting the internal volume to an autofrettage by applying a pressure of comprised between 100 MPa and 500 MPa by means of a liquid.. The invention is also directed to a gas valve body () comprising at least two bores () and at least one bore intersection () defining an internal volume with an internal wall; wherein the internal wall is treated by autofrettage resulting in compressive stresses at the intersection or at least one of the intersections.

Valve body treated by autofrettage

The invention is directed to a method for improving the mechanical behavior of a metallic body () comprising an internal volume for a fluid and at least one threaded connecting port () to said internal volume, the method comprising a step of treatment by autofrettage of the internal volume by applying a pressure to a liquid inside said volume. The autofrettage step comprises closing the internal volume by screwing a plug () to each the at least one threaded connecting port (), so that the thread(s) of said port(s) is/are also subject to the autofrettage treatment. The invention is also directed to a body () resulting from such a treatment, with compressive stresses at the root of one of the most carrying turns of the thread of each of the connecting ports. The compressive stresses improve the fatigue behavior of the body.

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Wehingen, Germany

Stephan Sellen