A flexible guide for a rotating resonator mechanism, in particular of a horological movement, the guide including a fixed support, an element that is capable of moving relative to the fixed support, at least one main flexible blade allowing the movable element to move relative to the fixed support by bending the one or more main flexible blades via a rotary motion about a centre of rotation, the flexible guide being arranged substantially in one plane, and includes at least one translation table joined to one end of the main flexible blade, the main flexible blade and the translation table forming a pair connected to the fixed support, to the movable element, or to an intermediate movable part, such that the translation table is configured to move in translation at least in part under the effect of the bending of the main flexible blade.

System for conducting measurements of friction of a chosen material with reduced errors. The system includes a sample holder, a bushing accommodating such holder while permitting reversible repositioning of the holder along a bushing axis, a horizontal force sensor, a vertical force sensor, a sample holder pusher and a subsystem including a linear vertical bearing (disposed in the bushing and separating the holder from the bushing) and/or a horizontally-sliding element between the rod pusher and the vertical force sensor. The subsystem is structured to reduce a rocking motion of the holder in the bushing caused by a relative motion between the sample and an auxiliary body brought in contact with the sample. The method for performing measurements with such system.

An anti-roll stabilizer device for boats includes a container adapted to be mounted on a suspension so as to oscillate around a first axis; a mass rotatably supported inside the container so as to form a rotor that rotates around a second axis transverse to the first axis; and a rotor cooling system having a hollow shaft arranged along the second axis, a first and a second cooling chamber sealed from the container of the rotor and from the outside, arranged at the ends of the hollow shaft and communicating through the hollow shaft, the first chamber having an inlet and the second chamber an outlet that are connected to a forced circulation circuit of the cooling fluid so that the cooling fluid can circulate from the first chamber to the second chamber through the hollow shaft and from the second chamber to the first chamber through the circulation circuit.

A radial force device for a contour measuring instrument for measuring a contour of a shaft-shaped workpiece which can be rotated about an axis of rotation. The radial force device has a clamping body, a force introduction roller, at least one counter-roller and a coupling device. The clamping body is shaped for fitting radially around a workpiece portion, received in the contour measuring instrument, of the workpiece. The force introduction roller is designed to apply a mechanical radial force to the workpiece in order to apply a load to the workpiece, wherein the force introduction roller is mounted in a radially movable manner on the clamping body. The counter-roller is mounted in the clamping body and designed to support the workpiece during the application of the force. The coupling device is shaped for coupling the clamping body to the contour measuring instrument.

The invention relates to a device for receiving a workpiece in a bearing device for rotatably mounting the workpiece about a bearing axis (L) associated with a workpiece bearing surface. The device comprises a bearing pedestal (14) including a bearing element (1) which has two concavely cylindrical bearing surfaces (5, 6) that lie next to one another in the same bearing plane and symmetrically to a plane of symmetry containing the bearing axis (L), the cylinder radii of the cylindrical bearing surfaces being greater than the radius of the workpiece bearing surface for which the bearing device is intended, wherein the cylinder axes of the two bearing surfaces (5, 6) are parallel to the bearing axis (L) and have a distance between each other.

The motion system for a CMM includes a measuring axis with an air bearing, a control unit for determining a position of the measuring probe in a reference frame and outputting the position as a measuring result. The first air bearing includes a guideway, slide having a slide surface and a gas outlet within the slide surface. The gas outlet is for providing a gas cushion in a gap between the slide surface and the guideway. A cover is arranged around the slide so a gap is provided between the cover and the guideway and a hollow space is provided between the cover and the slide. A wiper is arranged on the cover. A nozzle unit is supplied by a second gas supply line and for providing a high-pressure gas flow directed onto the guideway.

A magnetic bearing device and a positioning system which includes the magnetic bearing device are provided. The magnetic bearing device comprises a stator and a moving member which are formed from a coil device with at least one coil body, magnets, and/or flux guide members, where the moving member is movable relative to the stator along a direction of motion and the stator and the moving member are configured such that a magnetic force can be exerted upon the moving member when electrical energy is applied to the coil device to form an air gap between the stator and the moving member. The coil device is arranged exclusively in the stator and the extension of the moving member in the direction of motion is smaller than the extension of the stator in this direction. The extension of the stator corresponds to the length of the at least one coil body.

A test stand includes a base frame and a bearing housing defining a frustoconical recess. A bearing unit has a bearing sleeve defining a through-going bearing bore coaxial with a rotation axis. A bearing shaft is rotatably mounted in the bearing bore. A contour of an outer conical wall of the bearing sleeve is at least partially identical with a contour of the frustoconical recess, where the bearing unit is detachably arranged in contact with the frustoconical recess. A fixing element on the distal end of the bearing shaft is configured for detachably fixing a test object. A test stand drive is arranged on the base frame and has a test shaft configured to be driven in rotation about the rotation axis, where the test shaft is configured to be connected coaxially to the bearing shaft of the bearing unit.

A sensor bearing unit includes a bearing, which has a first ring and a second ring, both rings being centered on an axis, and an impulse ring. The impulse ring includes a target holder, a target mounted on the target holder, and a sleeve secured to the first ring of the bearing. The sleeve is provided with an axial portion having at least one radial protrusion and a collar extending at least partially radially. The target holder is mounted radially around the axial portion of the sleeve and axially between the first ring of the bearing and the collar of the sleeve. The at least one radial protrusion of the sleeve axial portion extends into a complementary recess provided on the target holder.

A folding metal back plate includes a first plate portion, a second plate portion, and a folding plate portion connected to the first plate portion and the second plate portion. The folding plate portion has two first folding areas respectively disposed close to the first plate portion and the second plate portion, and a second folding area formed between the two first folding areas. The first folding area has multiple rows of spaced first openings. The second folding area has multiple rows of spaced second openings. Each first folding area constitutes a first unfolding length. The second folding area constitutes a second unfolding length. The first unfolding length of the first folding area is 0.2 to 0.5 times the second unfolding length of the second folding area.