Abstract: A brake for linear movement devices comprising a device. The brake means includes a bar which extends parallel with the path of movement of the device and which accommodates a pressurizable hose-like element that extends along the bar. The invention is characterized by a slat spring accommodated in the bar and extending on one side of the hose-like element, a brake disposed along the slat spring and movable transversely to the longitudinal direction of the hose-like element and the spring and located adjacent one longitudinally extending edge of the spring, for movement transversely to the longitudinal direction and essentially in the plane of the spring when the hose-like element is placed under pressure and the spring is flexed outwardly. The brake also includes a slide shoe which is guided in the rail and connected to the device and actuable by the brake device that is movable towards the slide shoe.

Abstract: An attachment arrangement for attaching an object (4), for instance a rail, such as a support rail, brake rail, mounting rail or the like, onto a piston-cylinder control device (1), the cylinder of which has two undercut grooves (3) extending along at least one of its sides, these grooves being parallel with one another and therewith also with the cylinder axis. The object (4) is provided with two parallel ridges or keys (5), each of which is intended for locking coaction with a respective undercut groove (3). At least one wedge-shaped, elongated device (6) is arranged between the outside of the cylinder (1) and the object (4), in connection with each pair of coacting grooves (3) and ridges (4). Means (9) are provided for moving the wedge-shaped devices (6) in a direction transversely to the cylinder axis, so that these devices (6), in engagement with oblique surfaces (7) on the cylinder (1) and/or the rail (4), will fixate the rail in a position parallel with the cylinder axis.

Abstract: The present invention relates to a brake arrangement in linear motion operating devices of the kind which comprises a cylinder (1), a piston which is movable in the cylinder, and a rail (3) which is mounted on the outside of the cylinder (1), parallel with the cylinder axis, and which extends substantially along the whole stroke path of the piston. The rail is configured with slide surfaces (8) on opposite sides thereof, and the arrangement further comprises a slide (14) which is configured with slide shoes (15) and which is guided for linear movement along the slide by the slide surfaces (8), this slide being connected to a dogging element (2) connected to the piston.

Abstract: Apparatus in pressurized fluid cylinders where the piston is provided with a dog (2) extending through a slit in the cylinder wall, the slit being closed off with the aid of a sealing strip. The invention is distinguished in that a support part (4) which is fixed along the cylinder (1) has two free opposing surfaces (7) disposed at the side of the dog (2) and parallel to its path of movement and in that the dog (2) is provided with a portion (8) with two surfaces each of which is in slideable engagement with one of the surfaces (7) of the support part (4).

Abstract: A braking device in an arrangement for linear movement comprising an elongated part and a part movable in relation thereto. Along substantially the entire stroke of the movable part of a piston there is at least one first braking surface movably arranged in relation to the central axis of the elongated cylinder, the braking surface being adapted for co-action with a second braking surface arranged in association with the piston.

Abstract: A ball screw is provided in which the balls coacting with the screw and running in helical threads therein also run in parallel grooves of a raceway ring arranged coaxially about the screw. The grooves extend perpendicularly to the axis of the screw. The ring is freely rotatably mounted, but axially immobile in a nut element arranged coaxially around the raceway ring. A ball cage is arranged between the screw and the raceway ring and attached to the nut element.

Abstract: An improved pressure fluid cylinder of the type comprising a cylinder having a longitudinal slot through which a carrier element protrudes, the carrier element being connected to a piston which is movable in the cylinder. The slot is sealed by a sealing band and the piston is provided with a sealing cuff at each end. According to the invention the slot has a width which is greater on the outside of the cylinder than on the inside thereof.

Abstract: Device at such pneumatic cylinders where the piston is provided with a lateral carrier means (2) extending through a slot in the cylinder wall, said slot being sealed by means of a sealing band (3). On the outside of the cylinder (1) there is provided at least one undercut groove (4) extending along the cylinder and in parallel with its axis. A strip (6) corresponding to the length of the cylinder is further arranged to comprise at least two profiles (8) lying in a common plane, turned in opposite directions and having a cross-sectional form corresponding to that of the undercut groove (4).

Abstract: Brake means at devices for converting a rotary motion into a linear one by means of a threaded spindle (1) and a member (4) arranged in engagement with the threads thereof, and moving along this at the rotation of the spindle (1). The brake means consists of a ring (7) arranged at one end of the spindle and operable in one direction with the spindle (1) as well as a collar (14) arranged at the member (4) coaxially with the ring (7) and projecting from said member (4), the collar (14) coacting telescopically with the ring (7) and the surfaces of collar (14) and ring (7) engaging each other and producing a braking moment sufficient to stop the spindle (1).

Abstract: A device for translating a rotary motion to a linear one consisting of a first elongate body (1) provided with screw threads extending along the body and a second body (5) rotatable coaxially with the first body. A number of rollers (3) are arranged between the first and the second body with the axes of the rollers parallel to the axes of the bodies and provided with threads meshing with the screw threads of the first body, the first body being provided with teeth extending substantially along the entire body. Moreover, the rollers have teeth cooperating with the teeth of the first body, one body being displaced relative to the other at the turning of the bodies relative to one another. The second body (5) has threads (6) cooperating with the threads (4) of the rollers (3), and teeth (11) cooperating with the teeth (9) of the rollers.

Abstract: An improved sealing structure for a pressure fluid cylinder of the type comprising a cylinder, a longitudinal slot in the cylinder, and a driver attached to a piston movable in the cylinder, the driver extending through the slot. The sealing structure includes a strip positioned to overlie the slot in the sealing relation, the strip extending into sealing contact with the inside surface of the cylinder on opposite sides of the slot. That inside surface area of the cylinder which the strip overlies in sealing relation is provided with a cross-sectional radius greater than the cross-sectional radius of that cylinder surface area not in contact with the strip. Preferably the strip is chamfered on its inside surface toward its edges so that the height of the opposed strip edges is no greater than 0.1 mm.