Abstract: The drive source of a feeder (111) is utilized to drive a feed error correction device for correcting error in feeding a moving body caused by extension of linear bodies (161A, 161B) of the feeder. With the feeder (111) running, when extension at or above a predetermined value occurs in the linear bodies (161A, 161B), a guide unit (171) including a driven rotating wheel (172) for the linear bodies tows (or displaces) through power received from the drive source of the feeder, bringing the linear bodies (161A, 161B) into a state of appropriate tension. The guide unit (171) receives transmission of power in one direction only and appropriately tows the linear bodies (161A, 161B), thereby cancelling extension of the linear bodies at or above the predetermined value.

Abstract: The drive source of a feeder (111) is utilized to drive a feed error correction device for correcting error in feeding a moving body caused by extension of linear bodies (161A, 161B) of the feeder. With the feeder (111) running, when extension at or above a predetermined value occurs in the linear bodies (161A, 161B), a guide unit (171) including a driven rotating wheel (172) for the linear bodies tows (or displaces) through power received from the drive source of the feeder, bringing the linear bodies (161A, 161B) into a state of appropriate tension. The guide unit (171) receives transmission of power in one direction only and appropriately tows the linear bodies (161A, 161B), thereby cancelling extension of the linear bodies at or above the predetermined value.

Abstract: There is equipped with a forward and reverse winder (31), a forwardly winding liner body (51), a reversely winding liner body (61) and a reciprocating body (71). The forwardly winding linear body (51) and the reversely winding linear body (61) are connected to the reciprocating body (71). The amounts of winding and rewinding the forwardly and reversely winding linear bodies (51) (61) by the winding drum (37) of the forward and reverse winder are equal to each other. The winding drum (37) of the forward and reverse winder (51) when the forwardly winding linear body (51) is forwardly wound axially moves corresponding to the winding and rewinding pitches of the linear bodies whereby a high precision based on a quiet stabilization of an operation state, durability and miniaturization of construction and a high precision based on proper winding and rewinding of the linear bodies and durability can be improved.

Abstract: A feeder to be able to meet the requirements of positioning accuracy, long distance conveyance, remote conveyance, controllability, high precision feeding, high speed feeding, inexpensiveness, simplicity of construction, space saving, weight reduction, measure for dusting and safety for accident for being provided for multiple utilizations. This feeder comprises a forward winder (21), a reverse winder (31), a forwardly winding liner body (51), a reversely winding liner body (61) and a reciprocating body (71). The forwardly winding linear body and the reversely winding linear body are connected to the reciprocating body. The forward winder on winding rotation and the reverse winder on rewinding rotation rotate in synchronism and phase with each other in the same or reverse direction. The amount of winding the forwardly winding linear body by the forward winder and the amount of rewinding the reversely winding linear body by the reverse winder are equal to each other.

Abstract: A feeder to be able to meet the requirements of positioning accuracy, long distance conveyance, remote conveyance, controllability, high precision feeding, high speed feeding, inexpensiveness, simplicity of construction, space saving, weight reduction, measure for dusting and safety for accident for being provided for multiple utilizations. This feeder comprises a forward winder (21), a reverse winder (31), a forwardly winding liner body (51), a reversely winding liner body (61) and a reciprocating body (71). The forwardly winding linear body and the reversely winding linear body are connected to the reciprocating body. The forward winder on winding rotation and the reverse winder on rewinding rotation rotate in synchronism and phase with each other in the same or reverse direction. The amount of winding the forwardly winding linear body by the forward winder and the amount of rewinding the reversely winding linear body by the reverse winder are equal to each other.

Abstract: There is equipped with a forward and reverse winder (31), a forwardly winding liner body (51), a reversely winding liner body (61) and a reciprocating body (71). The forwardly winding linear body (51) and the reversely winding linear body (61) are connected to the reciprocating body (71). The amounts of winding and rewinding the forwardly and reversely winding linear bodies (51) (61) by the winding drum (37) of the forward and reverse winder are equal to each other. The winding drum (37) of the forward and reverse winder (51) when the forwardly winding linear body (51) is forwardly wound axially moves corresponding to the winding and rewinding pitches of the linear bodies whereby a high precision based on a quiet stabilization of an operation state, durability and miniaturization of construction and a high precision based on proper winding and rewinding of the linear bodies and durability can be improved.

Abstract: A composite hydraulic cylinder apparatus which has a pneumatic cylinder mechanism, a braking oil hydraulic cylinder mechanism associated concentrically with the pneumatic cylinder mechanism, an oil passage for communicating between the front chamber and the rear chamber of the oil hydraulic cylinder mechanism, and a control valve provided in the oil passage for controlling the flow of the oil. Thus, the apparatus provides high positioning accuracy, a large holding force, economy and small size as a movable element control system, and can be applied as a buffer for the movable element.