Abstract: A rotational construction laser includes a housing (17) a laser unit (4) located in the laser housing (17), a device (5) for rotating, at least segmentwise, a laser beam (2) of the laser unit (4) within a rotational plane (R) of a rotational member (6) in which the rotating device (5) is supported for rotational about a rotational axis (A) that intersects a beam axis (S) of the rotatable laser beam (2), and an arrangement for inclinably supporting the rotation axis (A) in at least one pivot plane (E1) and including a mounting frame (3) and a universal ball joint support (7) arranged in the mounting frame (3), with the rotating device (5) being located in a central point (M) of a universal ball joint (8) supported in the universal ball joint support (7).

Abstract: A rotational construction laser includes a housing (17) a laser unit (4) located in the laser housing (17), a device (5) for rotating, at least segmentwise, a laser beam (2) of the laser unit (4) within a rotational plane (R) of a rotational member (6) in which the rotating device (5) is supported for rotational about a rotational axis (A) that intersects a beam axis (S) of the rotatable laser beam (2), and an arrangement for inclinably supporting the rotation axis (A) in at least one pivot plane (E1) and including a mounting frame (3) and a universal ball joint support (7) arranged in the mounting frame (3), with the rotating device (5) being located in a central point (M) of a universal ball joint (8) supported in the universal ball joint support (7).

Abstract: A receiver serves to determine a position in relation to a surveying leveling instrument emitting at least two light beams, one light beam rotating at least partially about an approximately horizontal axis and the other light beam rotating at least partially about an approximately vertical axis. The receiver has two receiving regions, i.e. one for each of the two light beams. The receiving regions preferably consist of two rows of light-sensitive elements, for example photocells, intersecting at a center. An additional element in each case is provided upstream of the receiving regions in the direction of passage of the light beam. As a result of this, one of the two receiving regions can either be switched on or off in each case, so in each case only the light beam associated with a receiving region is detected and/or displayed. The receiving device has LED displays arranged in accordance with the receiving regions of the receiver.

Abstract: A receiver serves to determine a position in relation to a surveying leveling instrument emitting at least two light beams, one light beam rotating at least partially about an approximately horizontal axis and the other light beam rotating at least partially about an approximately vertical axis. The receiver has two receiving regions, i.e. one for each of the two light beams. The receiving regions preferably consist of two rows of light-sensitive elements, for example photocells, intersecting at a center. An additional element in each case is provided upstream of the receiving regions in the direction of passage of the light beam. As a result of this, one of the two receiving regions can either be switched on or off in each case, so in each case only the light beam associated with a receiving region is detected and/or displayed. The receiving device has LED displays arranged in accordance with the receiving regions of the receiver.

Abstract: The present invention provides a laser beam levelling device which is provided with two rotatable heads wherein a horizontal laser plane can be emitted from the first head which is rotatable round a vertical axis and a vertical laser plane can be emitted from the second head which is rotatable round a horizontal axis. An apparatus consisting of two separate pendulums is provided for self-levelling of the two laser planes. One pendulum is mounted substantially in the lower extension of the axis of rotation of the first head. The other pendulum is arranged to the side of it in its own vertical axis. The first pendulum is pivotal about a substantially horizontal axis and the second pendulum about an axis which is also horizontal and at right angles thereto. A laser beam produced by a laser light source is guided by reflectors such that it is deflected from one pendulum to the other pendulum and from there into the rotating heads.

Abstract: The present invention relates to a laser beam levelling device which has a rotating frame which is rotatable round a vertical axis and an inclining arrangement which is pivotal round a horizontal axis. Means connected to a controller are also provided to enable the rotated and inclined position to be monitored. One inclining arrangement can be orientated and inclined by the controller such that the laser plane formed by a rotating laser beam is inclined in a specific direction by a specific angle. This inclination is an auxiliary inclination by means of which the laser plane is simultaneously inclined in a longitudinal and transverse gradient differing from this auxiliary direction of inclination in each case. The auxiliary direction and the auxiliary inclination are calculated automatically by the controller on the basis of the desired longitudinal and transverse gradient of the laser plane and are converted into corresponding control commands.

Abstract: A laser beam receiver including a transparent disc and a mirror arrangement which are fastened on a base element. A light spot formed on the disc by a laser beam may only be seen optimally, particularly if the distance between the laser device and the laser beam receiver is so great that the laser beam arrives only faintly, if the observer's angle of view lies in the axial extension of the laser beam. The mirror is so arranged that this angle of view lies exactly in the axial extension of the laser beam. The range of action of the laser device is thus expanded in a simple and inexpensive manner.

Abstract: A conduit construction laser system comprises a light source producing the laser beam which is pivotally mounted in its front region emitting the laser beam in its longitudinal and transverse axes. The rear region of this light source is articulated to an adjusting device which is horizontally displaceable transversely to the axis of the light source for lateral alignment of the laser beam. The adjusting device has a vertical spindle on which the rear end of the light source is mounted upwardly and downwardly movably so that the laser beam can be levelled. Owing to a second spindle, the inclination of the laser beam can be adjusted on the basis of the levelling. A laser beam receiver has photocells which are arranged in the form of a target cross on the side facing the laser beam and are connected to similarly arranged light-emitting diodes on the side remote-from the laser beam. The corresponding light-emitting diode lights up when the laser beam impinges on a photocell.

Abstract: An arrangement comprising a laser beam receiver and a canal building laser device is intended to be disposed in a pipeline. The canal building laser device is located in a shaft at the beginning of the pipeline and the laser beam receiver is located at the end of the portion of the pipeline produced, for example, the previous day, in the region of a still open pit. Owing to the distance from the laser beam receiver and the unevenness of the pipe, it should be assumed, even with careful locating of the canal building laser device, that a laser beam from the laser device does not impinge exactly on the laser beam receiver. The laser beam receiver has an infrared light source for transmitting a control signal to an infrared light receiver on the canal building laser device. The angle of emergence of the laser beam emitted by the canal building laser may be remotely controlled via control buttons on the laser beam receiver.

Abstract: The laser beam levelling device has a vessel (1) with a U-shaped cross section filled with a dark liquid. A respective photoelectric sensor (2) is located on the exterior of the two free arms of the U. The two sensors (2) are connected to an evaluating device (3). As a respective light source (4) is provided opposite the sensors (2), a clear bright/dark distinction emerges in the region of the liquid surface level. This transition from the dark part into the bright part therefore indicates exactly the height of the liquid level. By comparing the height of the liquid level in the two arms of the U, the inclination of the axis X-X can be calculated in the evaluating device (3), or it can be determined whether the vessel (1) is located in the horizontal. The respective inclination can therefore be defined with high precision. The laser beam levelling device can accordingly be erected on a site on any uneven ground.

Abstract: A laser beam levelling instrument, which is not only intended to level but in which the laser beam is inclinable in two axes facing away from one another at right angles, has a self-levelling surveying plate at the lower end of a rotational shaft of the instrument. Disposed on the surveying plate are two spindles, facing away from one another at right angles, at the point of intersection of which there is a joint. At the ends of the two spindles remote from the joint, screw-threaded rods are disposed on the surveying plate on which rods the ends of the spindles can travel vertically. The joint has a center member which is connected to the rotational shaft by means of a pivot and an intermediate member and which is surrounded by a casing which is ball-bearing mounted on the surveying plate on vertical arms. Further disposed on the surveying plate are two spirit levels which are at right angles to one another, each level controlling an electric motor for the self-levelling of the surveying plate.

Abstract: A laser beam levelling instrument has a pipe length which is vertically and centrally mounted in the cover of a casing. The ends of this pipe length are pivotable, so that it can always be held in the vertical position. For this purpose two spirit levels are arranged at right angles to one another on a plate fixed to the lower end of the pipe length. The fluid in these levels is electrically conducting and the levels have electric contact points for operating a respective electric motor. The electric motors are provided with eccentric shafts which come into contact with the circumferential surface of the pipe length. If the pipe length diverges from the vertical, then the current from batteries ensures that it is brought back into the vertical position by means of the eccentric shafts. A laser light source is located in the lower part of the pipe length and a further pipe length is inserted in the upper end of the pipe length and can be rotated by a third electric motor.