An air bearing for movably bearing at least two elements includes a bearing main body with a first air outflow channel and a second air outflow channel. The first air outflow channel is supplied with air via at least one first air delivery device. The second air outflow channel is supplied with air via at least one second air delivery device. A sensor detects at least one of a bearing stroke, a bearing pressure, and a bearing throughflow, and a controller adjusts the supply of the air to at least one of the first air outflow channel and the second air outflow channel in accordance with the at least one of the bearing stroke, the bearing pressure, and the bearing throughflow.

An air bearing includes: a main body part having a bearing surface facing a guide surface; a flow path part provided in the main body part; an air film forming part that supplies compressed air flowing through the flow path part to the guide surface to form an air film; a negative pressure generating part that sucks air between the bearing surface and the guide surface, the negative pressure generating part being provided in the flow path part; a discharge path in communication with the flow path part; and a flow rate adjusting part that adjusts a flow rate of air flowing from the flow path part to the discharge path in accordance with a compressed air pressure corresponding to a load applied to the main body part.

The description relates to hinged devices, such as hinged computing devices. One example can include a first portion and a second portion. The example can also include a communication member spanning between the first and second portions and defining first and second parallel hinge pins. The first hinge pin can include a first cam follower that is received in a first multi-lobe cam of the first portion that forces the first portion away from the first hinge pin when the first and second portions are oriented at non-parallel orientations and allows the first portion to be biased toward the second hinge pin at parallel orientations.

A rotary table apparatus includes: a table part having a placement surface; a support part having a guide surface facing an opposing surface which is on an opposite side of the placement surface of the table part; an air film forming part that forms an air film by supplying compressed air between the guide surface and the opposing surface; a negative pressure generating part that sucks air between the guide surface and the opposing surface; a discharge part formed with a discharge port; and an opening adjusting part that adjust the size of an opening area of the discharge port in accordance with the size of a compressed air pressure corresponding to a load applied to the table part.

An apparatus and method for inducing multiaxial vibrations to simulate an environment for transporting a stack of products is provided. A lower platform is provided for inducing uniaxial vibrations. A link is connected to the lower platform by a lower end of the link. The upper end of the link has a universal joint, through which the link is connected to an upper platform. The upper platform has a top surface, on which the stack of products can be placed. In operations, the uniaxial vibrations of the lower platform are transferred to the upper platform through the link and the universal joint, to induce pivotal movement of the upper platform with respect to the shaft of the link. As a result, multiaxial vibrations can be induced to the stack of products placed on the top surface of the upper platform.

An apparatus and method for inducing multiaxial vibrations to simulate an environment for transporting a stack of products is provided. A lower platform is provided for inducing uniaxial vibrations. A link is connected to the lower platform by a lower end of the link. The upper end of the link has a universal joint, through which the link is connected to an upper platform. The upper platform has a top surface, on which the stack of products can be placed. In operations, the uniaxial vibrations of the lower platform are transferred to the upper platform through the link and the universal joint, to induce pivotal movement of the upper platform with respect to the shaft of the link. As a result, multiaxial vibrations can be induced to the stack of products placed on the top surface of the upper platform.

The invention relates to a rotary electrical machine (100) with an integral magnetic sensor (101) of the angular position of the rotor (150). The sensor includes a rotary part (108) with magnet (102) fixed to the end (160b) of the rotation shaft (160) at the rear of the machine, facing a fixed part (103) including Hall effect sensors and mounted on a fixed support (106) connected to the frame of the machine. The machine includes a bearing (104) centered on the axis (X), separating the rotary and fixed parts of the sensor. This bearing, fixed to the shaft and to the metal support of the fixed part of the sensor, and preferably in contact with the rotary part, constitutes a new mechanical reference close to the sensor. The invention provides accurate and robust position information independently of mechanical and magnetic disturbances to which the shaft may be subjected.

A structure and method of operation of a journal bearing is disclosed that minimizes contact of the shaft with the sleeve during start up and slow down of rotation of the shaft relative to the sleeve, or vice versa. The bearing assembly includes a gravitational load reduction mechanism with magnets disposed on the sleeve and on the shaft in alignment with one another. The magnet(s) on the shaft interacts with the magnet(s) disposed on the sleeve to provide a force against the pressure of the shaft towards the sleeve generated by gravity on the rotating component. The magnets enable centering of the rotating component within the stationary component during low rotation and non-rotation. This prevents rubbing of the rotating journal bearing component surfaces, e.g., sleeve, against the stationary journal bearing component, e.g., shaft, during assembly, ramp-up, and coast-down when the journal bearing fluid provides minimal or no bearing centering capability.

One aspect relates to a rolling element for a ball bearing wherein the rolling element has: (i) a Young modulus E in the range up to and including 100 GPa; and (ii) a yield strength Rp.sub.0.2 in the range up to and including 1800 MPa, or wherein the rolling element has at least an alloy of nickel (Ni) and titanium (Ti), wherein the weight ratio of Ni:Ti in the alloy is in the range of from 57:43 to 50:50. One aspect is a rolling bearing with: a. at least an outer ring; b. at least an inner ring, wherein a raceway is defined by the arrangement of the outer ring and the inner ring; and c. at least three rolling elements wherein the rolling elements are arranged in the raceway, wherein at least one rolling element comprises at least an alloy as mentioned above.

The present disclosure relates to an ultrasonic imaging apparatus that has a tolerance for easy assembly and reduces shaking and noise by reducing the tolerance after assembly. The ultrasonic imaging apparatus includes a main body, a probe connected to the main body to irradiate and receive ultrasonic waves and to transmit the ultrasonic signals to the main body, a control panel configured to control the main body or the probe, and a moving device configured to connect the control panel and the main body and to move the control panel with respect to the main body in the upward and downward directions, wherein the moving device includes a housing fixed to the main body, a moving member configured to be movable with respect to the housing in the upward and downward directions, and a regulating bearing installed in the housing and configured to assist the upward and downward movement of the moving member by coming into rolling contact with the moving member and to regulate a gap with the moving member.