This invention is related to a mechanical force generator (MFG) (11), the cost, the maintenance costs and the energy consumption of which have been minimized, as much as possible, since the reaction forces, the reaction moments and the frictional forces at the joints that connect the mechanism to the ground have been minimized as much as possible; which does not possess any actuators; and which can generate any desired force variation. MFG (11) may be obtained by using 3 novel kinematic chains. By using these kinematic chains, it is also possible to obtain general purpose mechanisms, which have advantages similar to the MFG (11); which may include an actuator; which may generate relative translational motion at a joint as any desired function of relative translational motion at another joint; which may be used in many different fields such as hydraulic and pneumatic machines, internal combustion engines and compressors.

This invention is related to a mechanical torque generator (MTG) (11), the cost, the maintenance costs and the energy consumption of which have been minimized, as much as possible, since the reaction forces, the reaction moments and the frictional forces at the joints that connect the mechanism to the ground have been minimized as much as possible; which does not possess any actuators; and which can generate any desired torque variation. MTG (11) may be obtained by using 3 novel kinematic chains. By using these kinematic chains, it is also possible to obtain general purpose mechanisms, which have advantages similar to the MTG (11); which may include an actuator; which may generate relative rotational motion at a joint as any desired function of relative translational motion at another joint; which may be used in many different fields such as hydraulic and pneumatic machines, internal combustion engines and compressors.

The present invention provides a height adjustment pillow including a lifting device adjusting the height of an upper member with respect to a lower member, the lifting device comprising: a drive shaft passing through the lower member with a lower end part thereof protruding from a lower part of the lower member and having a manipulation handle provided in the lower end part; at least one or more rotation members mounted on the lower member to be rotatable relative to upward and downward directional shafts thereof; a power train transmitting a rotational force of the drive shaft to the rotation members; and lifting operation equipment converting a rotational movement of the rotation member into a rectilinear movement of the upward and downward directions so as to lift and lower the upper member.

A linear motion mechanism with precise linear motion has structural robustness and allows easy reduction in weight and size, simple production and easy operation. The linear motion mechanism includes: an elastic arrangement which is arranged to transform an input direction and an input displacement to an output direction and an output displacement, wherein the output direction is orthogonal to the input direction; an operating member which is arranged to deform the elastic arrangement in the input direction by the input displacement; and a movable member fixed to the elastic arrangement to move in the output direction by the output displacement.

An apparatus for moving a shift rail of a transmission may include a control shaft provided to be moved in a direction perpendicular to a plurality of shift rails by an actuator, a plurality of rollers protruding from one selected among a corresponding one of the shift rails and the control shaft, the rollers being formed on one of facing sides of the shift rail and the control shaft, and a cam protruding in an S-shaped form from a remaining one selected among the corresponding shift rail and the control shaft, on which no roller is formed, the cam being provided to selectively move the shift rails in an axial direction by moving while coming into contact at opposite sides thereof with the rollers depending on a distance by which the control shaft is moved.

The disclosure is not limited in its execution to the previously indicated, preferred exemplary embodiments but rather a number of variants are conceivable which make use of the presented solution even in the case of basically differently designed embodiments. Therefore, the side sliding plates 10, 30 can be designed on at least three side surfaces with a coating against wear, preferably as fixed lubricant surfaces or as a sintered layer.

Device (10) for converting a linear motion of a first mechanical element in a rotary one of a second mechanical element, having a pin (1) which realizes a coupling between the two mechanical elements, a guide block (3) housing the pin (1) and having inclined outer side surfaces (3), two guide pads (5) provided with corresponding inclined inner side surfaces (5), which are coupled with the inclined outer side surfaces (3) of the guide block (3), and with outer side surfaces (5) configured to be coupled with corresponding wings of the Scotch yoke (9), a spring element (6), configured to generate an elastic force (Fe) on the guide pads (5) such that the guide pads (5) slide on the guide block (3), wherein the inclined outer side surfaces (3) of the guide block (3) and the inclined inner side surfaces (5) of the guide pads (5) have the same inclination angle, the distance (A) between the outer side surfaces (5) of the guide pads (5) is a function of the mutual position of the inclined inner side surfaces (5) of the guide pads (5) and the corresponding inclined outer side surfaces (3) of the guide block (3), and the outer side surfaces (5) of the guide pads (5) are parallel to each other.

An apparatus for moving a shift rail of a transmission may include a control shaft provided to be moved in a direction perpendicular to a plurality of shift rails by an actuator, a plurality of rollers protruding from one selected among a corresponding one of the shift rails and the control shaft, the rollers being formed on one of facing sides of the shift rail and the control shaft, and a cam protruding in an S-shaped form from a remaining one selected among the corresponding shift rail and the control shaft, on which no roller is formed, the cam being provided to selectively move the shift rails in an axial direction by moving while coming into contact at opposite sides thereof with the rollers depending on a distance by which the control shaft is moved.

An operation device includes a stationary portion, a movable portion configured to move in a predetermined direction within a predetermined range, and a load adjuster configured to adjust a movement load of the movable portion. An elastic portion that is elastically deformable is provided to the movable portion. The load adjuster is provided to the stationary portion and provided with a press portion configured to press the elastic portion in a direction intersecting with the moving direction of the movable portion.

A method and apparatus for implementing an ultra-high stability long-vertical travel stage are provided. The ultra-high stability long-vertical travel stage includes a first wedge supporting a second wedge, each wedge formed of a selected stable material having predefined rigidity and low thermal expansion coefficient, and integrated air bearings. A linear guiding mechanism includes a plurality of flexures. The first wedge is driven in a plane providing vertical motion on the second wedge with the integrated air bearings lifted and the flexures allowing for movement.