Abstract: A rolling nut in combination with a smooth shaft includes a plurality of bearing-like roller cages surrounding the shaft and having internal surfaces in contact with portions of the outer surface of the shaft and is operative for transforming a rotary movement of the shaft into thrust movement of the rolling nut. The rolling nut is open and is provided with a base plate formed with a plurality of pocket-shaped recesses in which the roller cages are partially inserted. The base plate is formed with similar recesses at both sides thereof so that the roller cages can be repositioned on either side of the plate to selectively adjust the roller cages to the left hand thread of the shaft or the right hand thread of the shaft.

Abstract: The rolling nut for transforming a rotary movement of a smooth shaft into a thrust movement of the nut comprises a tubular housing in which a number of roller cages defining a center passage for the shaft and engaging an arcuate surface portion of the shaft are arranged. The roller cages are inclined to the axis of the shaft and to each other. Wedge-shaped distance rings are arranged between the neighboring roller cages and laterally of the end roller cages. The roller cages and the distance rings are interchangeable within the housing so that the direction of the angle of inclination of each roller cage within the housing can be varied.

Abstract: The arrangement for transforming rotary movement of a smooth shaft into a thrust movement by means of a rolling nut that comprises a housing and, within the housing, four inclined roller cages each defining a center passage having an inside diameter larger than the diameter of the shaft and each engaging an arcuate surface section of the shaft; the end points of the section of engagement forming with the center point of the corresponding roller cage a bevel angle within the range of 60.degree. and the distance between the two points being sufficient for insuring a stable position of each cage on the shaft even if the cages are loaded laterally. The intermediate two roller cages are urged in contact with the shaft by a pair of springs, respectively.

Abstract: A device for moving objects along a predetermined path comprises a rotatable shaft of circular cross-section extending along this path and a suspension arrangement comprising at least two rolls arranged displaced from each other in the circumferential direction of the peripheral surface of the shaft and frictionally engaging this peripheral surface, and a frame carrying the rolls with the axes thereof including an angle with the longitudinal axis of the shaft.