Abstract: An adjusting device for automatically actuating a vehicle door of a motor vehicle includes first and second tubular housings connected between a body of the vehicle and the door. A spindle drive includes a spindle driven by an electric-motor drive, a spindle nut threaded on the spindle, a push rod that bears the spindle nut, and a tubular guide part enclosing the push rod and the spindle nut. The tubular guide part is provided with a shape complementary to a shape of the spindle nut and secures the spindle nut against rotation. The tubular guide part is produced by a plastic forming process on a suitable metal tube. A cylindrical spring assists the spindle drive enclosing the tubular guide part. Spacers are provided over an outer circumference of the tubular guide part to reduce friction between the cylindrical spring and the tubular guide part.

Abstract: The invention relates to a jack (4) for moving a movable panel of a vehicle, including: a endless screw and nut assembly (14) defining an axis (22); a bearing (20) in which an element (14) selected from the nut and the screw, for example the latter, is rotatably mounted; and a tensioner (60) which is force-tilted onto the element or onto the hearing and which biases the latter by means of mutual axial bearing when the jack is inoperative.

Abstract: The invention relates to an adjusting device (5) for automatically actuating the vehicle door (3) of a motor vehicle, said device (5) having:—a first tubular housing (15) connected to the body (9) of the vehicle (1) and a second tubular housing (25) connected to the vehicle door (3) to be adjusted, the second tubular housing (25) can be moved telescopically relative to the first housing (15), and—a spindle drive (21) comprising: •a spindle (27), which can be rotated by an electric-motor drive arranged in the first tubular housing (15), • a spindle nut (31) threaded with the spindle (27), which when the spindle (27) is rotated, is displaced along the longitudinal axis (A) of the spindle (27), from a retracted rest position into an extended position, • a push rod (33) bearing the spindle nut (31), which extends in the direction of the longitudinal axis (A) of the spindle (27), said push rod (33) being coupled to the second tubular housing (25), • and a tubular guide part (39) enclosing the push rod (33) and the

Abstract: A device for automatically actuating a vehicle door (1), in particular a side door or a tailgate of the motor vehicle, including: A control device (12) and a drive (4;4?) having a motor (5) with a gearing (6) connected downstream and at least one transmission element (8;20) located between the gearing 6 (6) and thevehicle door (1). The invention facilitates the manual actuation of an automatically actuated vehicle door (1) that is in an open position. To achieve this, a load sensor (10) is mounted on the drive (4). When a predetermined load on the open vehicle door (1) has been reached, the sensor generates a control signal, which is fed to the control device (12) for activating the motor (5), or for decoupling a coupling (18) that is located between the gearing (6) and the transmission element (8;20), the load on the open vehicle door (1) being produced e.g. by a corresponding manual pressure on the vehicle door (1).

Abstract: The invention relates to a device for automatically actuating a vehicle door (1), in particular a side door or a tailgate of the motor vehicle. Said device comprises a control device (12) and a drive (4;4′) that consists of a motor (5) with a gearing (6) connected downstream and at least one transmission element (8;20) located between the gearing (6) and the vehicle door (1). The aim of the invention is to facilitate the manual actuation of an automatically actuated vehicle door (1) that is in an open position. To achieve this, a load sensor (10) is mounted on the drive (4). When a predetermined load on the open vehicle door (1) has been reached, said sensor generates a control signal, which is fed to the control device (12) for activating the motor (5), or for decoupling a coupling (18) that is located between the gearing (6) and the transmission element (8;20), the load on the open vehicle door (1) being produced e.g. by a corresponding manual pressure on said vehicle door (1).

Abstract: A drive includes a motor (5) and at least one gear assembly (7) that is connected downstream of the motor (5) for vehicles comprising a door (1) that can be closed automatically. The output shaft (28) of the gear assembly (7) is disengaged from the drive shaft (27) in such a way that during the manual actuation of the units connected to the output shaft (28), (e.g. tailgate of the vehicle,) their displacement is not restricted by the units connected to the drive shaft (27) of the coupling (e.g. electromotor (5) or intermediate gear (6)), thus preventing wear of the units. The gear assembly (7) can be disengaged and comprises a gear-assembly housing (21) with a cylindrical cavity (22), in which a planetary gear (23;38), provided with a housing (26;39) and concentric drive and output shafts (27,28), is rotatably mounted.

Abstract: The invention relates to a method for the automatic operation of a vehicle door (1), in particular a side door, or a rear hatch of a motor vehicle, from a first to a second position, by means of a drive (5; 26), connected to a controller (6), which acts on the vehicle door (1), by means of at last one transfer element (12; 30). The invention further relates to a device for carrying out said method. According to the invention, an automatically operated vehicle door (1) in the first position thereof, may be simply swung into the second position thereof at the same speed, even with differing street inclinations where the vehicle is standing, whereby, after activating the drive (5), the speed of the relevant vehicle door (1) is measured within a given angular range and compared with a set value curve. So long as the measured actual value for speed of the vehicle differs from the given set value curve, the speed of the door is changed until the speed as given by the set value curve is achieved.

Abstract: Machinery for welding helical-seam pipe from metal strip. It includes a strip feed, a strip shaper, a seam welder, a pipe output, and a downstream pipe sectioner. The pipe sectioner has a cutter that moves back and forth axially, trimming sections of different lengths from the pipe as it rotates around its axis and leaves the machinery. The machinery also has controls that determine the welding gap between the section of the strip and the beginning of the pipe and how rapidly the pipe cutter moves along the pipe. How rapidly (v) the pipe cutter (47) moves along the pipe is controlled by three detectors. One detector (60 determines how rapidly (v.sub.b) the strip is traveling. Another detector (62) determines the strip-infeed angle (.alpha.) between the section (9) of strip and the axis of the pipe. A third detector, a camera (53), determines the axial deviation of the incision (54) over an angle (.beta.) to the pipe cutter at the circumference of the pipe.

Abstract: To permit gripping of tacky prepreg blanks with stepped surface in an apparatus for the transport of tacky prepreg blanks comprising a suction head, a suction head suspension, a suction pump and a drive generating the movement of the suction head in the vertical and horizontal direction, the suction head (1) comprises a plurality of individually sprung suction tubes (12).

Abstract: An arrangement for manufacturing pressed shapes and similar structures in which loading and unloading arms are driven by displacement drive mechanisms. These displacement drive mechanisms have at least two displacement cylinders with strokes that are shorter than either the displacement path of the loading arm or the displacement path of the unloading arm. There is no force transmission from the cylinders to the loading and unloading arms to provide for minimum use of driving power during acceleration intervals when the loading and unloading arms move from a stationary position to a displacement speed.

Abstract: In a machine for manufacturing spiral seam piping from strip metal, using a set of three forming rolls consisting of a large number of individual bending rollers, the bending rollers acting on the inside of the pipe being arranged on a roller carrier which is capable of adjustment, the roller carrier (22) is controlled and driven in order to tilt it laterally by the use of a parallelogram control arm system (23) with two control arms (25, 26) arranged in a first control circle plane (24a) and one control arm (27) arranged in a second control circle plane (24b), at least one control circle adjuster (28, 29) associated with a control circle plane (24a, 24b), a link rod (31) acting in the direction of the pipe centerline (30), a lifting device (33) pivoted at the end (32) of the roller carrier (22), and a height-adjustable mounting (34) with a joint plate (36) carried in a bearing in the central portion of the roller carrier (22), a double lever (37) and a lifting device (38).