Abstract: A screwing device on a cantilever arm of a construction vehicle for screwing foundation installations into the ground has a suspension, a screw head, and an actuator. The actuator can be pivoted about two axes extending parallel to one another and transversely with respect to the longitudinal axis of the screw head. The articulation point on the screw head follows the motion of the pivoting lever on the longitudinal axis due to a migration of the articulation point from the longitudinal axis of the screw head occurring due to pivoting of the pivoting lever about the axes while screwing the foundation installation into the ground. The axes extend transverse to the longitudinal direction of the cantilever arm and are supplemented by at least one additional axis supported transversely with respect to said axes. This compensates for a migration of the articulation point in each direction.

Abstract: A holding device for rod-shaped components comprising holding elements that move through a series of positions. To hold a component the holding elements move in sequence from open releasing positions, to contacting positions, to aligning positions and finally to fully closed positions. Holding elements in aligning positions permit the held component to be moved and aligned even though the holding elements are more firmly in contact with the component than in their contacting positions. Slide-resistant surfaces formed on the holding elements are made in such a way that in the case of the movement of a misaligned component, sliding resistance is intensified in one direction while sliding resistance is reduced in another direction to permit movement of the component in that direction into the desired alignment. The holding elements are moved in the opposite sequence to release a component.

Abstract: Tree stand in which a tensioning device can move a plurality of retaining elements that are arranged about the axis of the receiving area of the stand, by means of a flexible force transmission element that can be loaded with tension, out of a loose position in which the trunk can be adjusted into a support position in which the retaining elements are positioned largely force-free on the trunk, then into an alignment position in which the retaining elements hold the trunk so that it can be aligned, finally into a retaining position in which the trunk is clamped upright, whereby the lower retaining force of the plurality of retaining elements, which force is required in the alignment position, is produced by an elastic buffer element allocated to the force transmission element.

Abstract: In a rotary drive for rotating a panel-shaped solar module, rotary pulses with a limited rotational path are introduced from outside only by step. A rotatable gear disk in the rotary drive has a regularly ratcheted control contour with ratchet units like teeth. In cooperation with a control member, what this attains is that the rotatable gear disk returns to a defined stable starting/center position when rotating up to a limiting angle, but when the limiting angle is exceeded advances at least one ratchet unit. The solar module is connected rotation-fast to the gear disk. What this embodiment attains is that the positioning accuracy of the solar module is largely independent of the rotary pulse introduced from outside. This means that a group of rotary drives can be rotated jointly with a central drive via mechanical coupling links, and despite the inaccuracies of a mechanical coupling there is good and uniform positioning accuracy for the individual solar modules.

Abstract: A holding device with a receiving part 2 arranged on the foot part 1 for rod-shaped components, said holding device comprising several holding elements 5, which can be pivoted towards the axis of symmetry 4 of the receiving part and which can be moved by means of a tensioning device 7 and a connecting element 8 out of the releasing position over a contacting position and an aligning position into the holding position. Each holding element has a contacting region 6, which is placed in contact with the component when the holding elements are tensioned. The contacting regions have faces, which are arched convexly towards the axis of symmetry and which have a slide-resistant surface. The slide-resistant surfaces of the mounting holding elements 5 are made in such a roughened up, toothed, ribbed, scaled, or similar manner that the rod-shaped component can be fixed in the holding position sufficiently and can glide on them during alignment.

Abstract: Tree stand in which a tensioning device can move a plurality of retaining elements that are arranged about the axis of the receiving area of the stand, by means of a flexible force transmission element that can be loaded with tension, out of a loose position in which the trunk can be adjusted into a support position in which the retaining elements are positioned largely force-free on the trunk, then into an alignment position in which the retaining elements hold the trunk so that it can be aligned, finally into a retaining position in which the trunk is clamped upright, whereby the lower retaining force of the plurality of retaining elements, which force is required in the alignment position, is produced by an elastic buffer element allocated to the force transmission element.

Abstract: A method for manufacturing a device for fastening poles, posts, masts or the like in the ground and a fastening device with a basic body are described, it being possible, but not essential, for at least one part portion of the basic body to be provided with a screw-like or spiral-like thread, and the basic body essentially having a cone-shaped basic shape with at least one conical part portion. According to the method of the present invention, the basic body is hammered into the basic shape from an essentially cylindrical tube. The fastening device has a holding portion, and an anchoring portion designed in one piece which, if provided with a thread, has at least two part portions of different conicity. The holding portion and essentially the anchoring portion are hollow throughout.

Abstract: A method and an apparatus are described for positioning and fixing beams, in particular made from wood, in particular for the construction of ground foundations, by means of at least one ground dowel. The ground dowel receives, in a retaining part, a ground dowel insert part which can be fixed therein and which possesses a retaining means, attached to a baseplate, for determining the position of the beam relative to the ground dowel insert part, the ground dowel insert part being fixed at least adhesively on the pressed-on beam. After the ground dowel, placed at the desired position and provided with the ground dowel insert part, has been adjusted to the desired height, the beam is pressed on to the retaining means in the desired position. The ground dowel insert part is fixed on the removed beam in accordance with the position determined by the retaining means, and the beam thus positioned, with the ground dowel insert part fixed thereon, is inserted into the retaining section of the ground dowel.

Abstract: The invention relates to a stand for mounting bar-shaped parts (1) that comprises a stand element (2), which holds the bar-shaped part (1) upright, and a holding element (3) that can be tensioned via a tensioning device (4) for holding the bar-shaped part (1). Said stand also comprises and abutment (6) against which, for the purpose of mounting, the bar-shaped part (1) can be squeezed by the holding element (3). To this end, the abutment (6) has at least two bearing points (9, 10), which are interspaced in a vertical direction and against which the bar-shaped part (1) is placed. By placing, for example, against a U-profile (7), the abutment (6), which is provided in the form of a tubular segment, can be turned at least about an essentially horizontal axis. The tensioning device is connected to the stand element (2) via a base part (5).

Abstract: The invention relates to a stand for clamping rod-shaped structures, in particular Christmas trees. The stand has a tensioning and holding device, a housing, and a water container. The tensioning and holding device can be moved from a first position to a second position, the rod-shaped structure being held in the first position, and the tensioning and holding device, in the second position, being lowered into the water container. The width to height ratio of the water container is greater than 2.5:1, and the width to height ratio of the housing corresponds substantially to that of the water container.

Abstract: The invention relates to a stand for gripping rod-shaped components, in particular Christmas trees. The stand is formed in two pieces from a housing cover and a housing base. A recess for a holding region and for a clamping and retaining device is provided in the housing cover. With the housing cover placed onto it, the housing base forms a chamber for holding a hardening filling material which can be poured into it.

Abstract: Disclosed is a device for the vertical arrangement of a pole or post-like object (4) on a fixing device (6) located in the ground, comprising a substantially cylindrical, longitudinally extended holding drift (10) which protrudes upwards from the free upper side of the fixing device (6) and which can be inserted into a receiving bore hole (12) on the lower front face (14) of the pole or post-like object (4). Also provided is a support plate (16) which is separate from the fixing device (6) and can be fixed onto the lower front face (14) of the pole or post-like object (4). At least one fixing attachment (18) protrudes upwards therefrom. In the middle of the support plate (16) there is an orifice (24) which is at least partially adapted to the cross-section of the holding drift (10). The support plate (16) also has a clamping section (26) which borders on the central orifice (24) and which is oriented in the same direction as the at least one attachment (18).

Abstract: An apparatus for laying sheet material securely over a ground surface. The apparatus includes a first device configured to roll along the material. The first device creates a groove in the ground and simultaneously presses the material into the groove. A second device follows the first device and presses the ground together on opposite sides of the groove to secure the material into the groove.

Abstract: An anchoring apparatus for securing a pole into ground, which includes a tubular section being retained in the ground for supporting the pole. A support element is disposed on the open end of the tubular member, for supporting the pole proximate to the open end. The support element includes an annular outer member, which is rotatably disposed on the tubular section, and includes a support aperture eccentrically offset with respect to the center of the outer member. An annular inner member is rotatably disposed within the support aperture, and includes a receiving aperture eccentrically offset with respect to the center of the inner member, for supporting the pole. The outer member and inner member are respectively rotatable to vary the positions of the support aperture and the receiving aperture, so as to selectively tilt the poles longitudinal axis to a desired position with respect to the direction of the longitudinal axis of the tubular section.

Abstract: A device for the vertical arrangement of a pole or post-like object is disclosed. A securing device is disposed at the ground end and includes a substantially cylindrical, elongated mounting mandrel which projects upwards from the free upper side of the securing device. This mandrel can be inserted into an accommodating bore in the underside of the pole or post-like object. A support plate on which the underside of the pole or post-like object rests, has at least one securing projection that protrudes upwards from the support plate and penetrates the material of the pole or post-like object. The mounting mandrel is substantially thinner than the accommodating bore in the underside of the pole or post-like object such that a play is provided between the outer periphery of the mounting mandrel and the inner circumferential area of the accommodating bore seen substantially over the entire axial extension of the mounting mandrel.

Abstract: A tree stand featuring a plurality of retaining elements and a single clamping element which acts upon all of the retaining elements via a load transmission element. The load transmission element comprises a flexible, substantially inextensible connecting part having tensile strength which initially moves all of the retaining elements essentially free of a retaining force into contact with the trunk of the tree, and then presses all of the retaining elements against the tree trunk with an essentially identical retaining force.

Abstract: A Christmas-tree stand (2) essentially consists of a housing (6) in which two clamping bars (18, 20) are rotatably supported so as to allow a swivelling movement around two support pins (22, 24). The activation of the clamping straps (18, 20) takes place via a central clamping device which essentially consists of a threaded rod (26) with two inversely threaded sections (32, 34) constructed thereon. When rotating the threaded rod (26), the free ends of the clamping bars (18, 20) are moved along by the nuts (30, 30') running along with the threaded sections (32, 34), so that a Christmas-tree trunk can be fixed or fastened between the clamping bars (18, 20).