A rolling diaphragm pump includes a housing, a rolling diaphragm, a piston, a motor, and a ball screw. Rotational motion of the motor is converted into linear motion by the ball screw to cause the piston to reciprocate, and a volume of a pump chamber is changed by deformation of the rolling diaphragm, thereby sucking and discharging a transport fluid. The ball screw includes a screw shaft placed coaxially with an axis and rotationally driven about the axis relative to the housing by the motor, and a nut portion screwed to the screw shaft so as to be reciprocatable in an axial direction and having an insertion hole formed over an entirety thereof in the axial direction at a position eccentric to the axis. A guide shaft configured to guide reciprocation in the axial direction of the nut portion is inserted through the insertion hole of the nut portion and fixed to the housing.

A rolling diaphragm pump includes a housing, a rolling diaphragm, a piston, a motor, and a ball screw. Rotational motion of the motor is converted into linear motion by the ball screw to cause the piston to reciprocate, and a volume of a pump chamber is changed by deformation of the rolling diaphragm, thereby sucking and discharging a transport fluid. The ball screw includes a screw shaft placed coaxially with an axis and rotationally driven about the axis relative to the housing by the motor, and a nut portion screwed to the screw shaft so as to be reciprocatable in an axial direction and having an insertion hole formed over an entirety thereof in the axial direction at a position eccentric to the axis. A guide shaft configured to guide reciprocation in the axial direction of the nut portion is inserted through the insertion hole of the nut portion and fixed to the housing.

A display apparatus including a display and a supporter. The supporter being mounted on the display and configured to support the display and rotate the display module between a first position and a second position. The supporter including a drive motor, a first gear, and a detection sensor. The drive motor configured to supply a driving force to rotate the display. The first gear configured to rotate together with the display by receiving the driving force from the drive motor. The detection sensor configured to detect a rotation amount of a second gear configured to rotate in with the first gear.

A display apparatus including a display and a supporter. The supporter being mounted on the display and configured to support the display and rotate the display module between a first position and a second position. The supporter including a drive motor, a first gear, and a detection sensor. The drive motor configured to supply a driving force to rotate the display. The first gear configured to rotate together with the display by receiving the driving force from the drive motor. The detection sensor configured to detect a rotation amount of a second gear configured to rotate in with the first gear.

A robot includes a first member, a second member provided to be capable of turning with respect to the first member, and a gear device configured to transmit a driving force from one side to the other side of the first member and the second member. The gear device includes an internal gear, an external gear having flexibility and configured to partially mesh with the internal gear, a wave generator configured to be in contact with the external gear and move a meshing position of the internal gear and the external gear in a circumferential direction, and lubricant disposed in at least one of a meshing section of the internal gear and the external gear and a portion where the external gear and the wave generator are in contact with each other. A last non-seizure load of the lubricant is 300 N or more.

A continuously variable transmission includes four shift elements to establish three forward driving ranges and one reverse driving range. Two of the forward driving ranges utilize recirculating power flow paths in which the power transmitted through the variator is much smaller than the power transmitted by the transmission. Both variator sheaves rotate about axes that are offset from the input axis such that neither sheave is partially submerged in transmission fluid.

A robot includes a first member, a second member that is provided so as to be movable around the first member, and a gear device that transmits driving force from one of the first member and the second member to the other. The gear device includes an internal gear, a flexible external gear that has an external tooth portion, which partially meshes with the internal gear, and a body portion, which is linked to the external tooth portion in a direction of a rotation axis, and a wave generator that comes into contact with the external gear and moves a position where the internal gear and the external gear are meshed with each other in a circumferential direction. An exterior surface of the body portion has an oil-repellent portion of which oil repellency is higher than oil repellency of an exterior surface of the external tooth portion.

A protective cover is disclosed for teeth of a gear body. The protective cover includes a desiccant disposed in a polymer enclosure. A method of protecting a gear is disclosed. The method involves generating a digital model of a protective cover having a surface portion that matches a surface contour of the gear teeth and inputting the digital model into an additive manufacturing apparatus or system. A protective cover is formed by repeatedly applying energy from an energy source to fuse successively applied incremental quantities of a polymer corresponding to the digital model of the protective cover, and the gear teeth are covered with the surface portion of the protective cover that matches the surface contour of the gear teeth.

A protective cover is disclosed for teeth of a gear body. The protective cover includes a desiccant disposed in a polymer enclosure. A method of protecting a gear is disclosed. The method involves generating a digital model of a protective cover having a surface portion that matches a surface contour of the gear teeth and inputting the digital model into an additive manufacturing apparatus or system. A protective cover is formed by repeatedly applying energy from an energy source to fuse successively applied incremental quantities of a polymer corresponding to the digital model of the protective cover, and the gear teeth are covered with the surface portion of the protective cover that matches the surface contour of the gear teeth.

A drive device having a main drive device, a gearing, a switchable clutch, at least one hydraulic pump, and a gearing output shaft is started with low wear by providing an auxiliary drive to drive the gearing output shaft independently of the main drive device. A work machine device includes the drive device and a work machine which can be started accordingly in a low-wear manner and which enables longer-term operation in the reverse direction of rotation. Corresponding methods which are also provided in connection with the drive device and the work machine device, enable low-wear starting and the elimination of undesired operating states.