Abstract: A backing plate unit for a rotary grinding machine includes a backing plate with a front face for mounting a grinding disc and a back face opposite the front face, a drive shaft that can be attached to the tool adaptor of the rotary grinding machine, and a suction hood that is rotatably fixed to the drive shaft. The backing plate 10 includes suction openings that penetrate the backing plate so that the suction hood 30 vacuums dust through the backing plate to the back face of the backing plate.

Abstract: The present invention relates a grinding device 1 for the machine-based grinding of rotor blades 100 for wind energy systems, comprising a belt grinding unit 10 with a circulating grinding belt 12.

Abstract: A grinding and cleaning fleece 1, for the machine-based grinding and machine-based cleaning of structured surfaces, consists of a fleece body 10, which includes a processing surface 11 with a plurality of burls 14. A method of manufacturing and use of the cleaning fleece is also disclosed.

Abstract: A sieving device with a vibratory supporting frame and a vibration frame which is held against said supporting frame so as to be able to vibrate freely. A simple, compact design which provides good sieving and conveying performance is achieved in that the vibration frame is spring-elastically coupled to the supporting frame by torsion-bar-like spring elements.

Abstract: A sieving device and the operation of a sieving device are proposed. The sieving device has a supporting frame which can be made to vibrate and a vibration frame which is held so as to be able to vibrate freely in relation to said supporting frame. A simple, compact design which provides good sieving and conveying performance is achieved in that the vibration frame is spring-elastically coupled to the supporting frame by helical springs, with the main spring axes of the spring elements extending in the direction of vibration of the tension waves. Furthermore, guiding elements for movable bearing arrangement of the vibration frame on the supporting frame are provided. The sieving device is operated in particular at a vibration frequency of at least 850 vibrations per minute at an average speed of approx. 11 m/s and at an average acceleration of the vibration frame relative to the supporting frame of approx. 2.2 m/s2.

Abstract: A device for heating or cooling of bulk material including two pairs of vibrating chutes, with each pair being formed of two oppositely inclined chutes mounted one above the other and with each pair being equipped with a unidirectional vibrator, and with vibrating chutes of each pair being connected with a plurality of pairs of oppositely inclined articulated bars, and with vibrating chutes being equipped with flow ducts connected with each other in such a way that heating or cooling medium flows in the flow ducts of the vibrating chutes of each pair in the same direction so that in one chute the directions of flow of the heating or cooling material coincide with the flow of bulk material, and in the other chute they flow in opposite directions.

Abstract: The holder serves for fixing sheet-like picture material between a back wall (1) and a transparent front pane, which together with the picture material can be exchanged towards the front side. The back wall (1) is designed as one piece with a frame (2) extending around the inserted picture material and the front pane and projecting towards the face side. Frame segments disposed on opposing sides (3, 4) of the frame each support at least one holding attachment (5, 6) and each are cut free by a through-extending opening (12, 13) disposed adjacent the holding attachment, wherein in each case one of said openings is aligned with a holding attachment, exposing an area in the back wall (1) which is larger than the parallel projection of the projecting holding attachment. One (13) of the through-extending openings is shaped in a way such that it can be penetrated by the user with the end of a finger in order to lift out the picture material and front pane for exchanging the picture.

Abstract: The film (3) is introduced prior cutting in an open frame (1) arranged in a seizing position until the portion of film to be framed (3a) has reached its final position within the frame. Thereafter, the film portion is secured in its final position and then cut by an appropriate device arranged at the vicinity of the frame opening. The cutting device (5) is then removed by displacement with respect to the frame (1) held in a fixed position, the film portion is maintained within the frame and the latter is finally closed. Hence, the seizing devices are avoided; furthermore, the film portion (3a) is placed in its correct position within the frame (1). An auxiliary guiding device (8) removed from the film guide (4), arranged on the side opposite to the cutting device (5), provides for the positioning of the film portion, said portion should present the last image of the film without being guided in the guiding conduit (4).

Abstract: The frame is provided with several, at least partially straight sides and outwardly projecting locking elements formed on all sides, which are of such a complementary configuration that each side of a frame can be coupled with one side of another frame through the locking elements and several frames can be united in one plane to form a frame panel. The frame bodies can be injection molded from plastic in one piece with the locking elements. In another frame embodiment, each frame has a base plate and a frame overlay which can be fixed on the latter by fastening means, the outwardly projecting locking elements being formed on the outside margin of the base plate. The locking elements have preferably identical profiles and interspacing on all frames, so that frames of different frame sizes can be combined without problems.

Abstract: A container for containing photographs and associated strips of negatives formed from a plastics material housing having one rectangular compartment for containing photographs and a second compartment for accommodating strips of negatives. The container is a flat container having a pivotally mounted lid which constitutes substantially all of one flat side of the container, and the lid may be opened to provide access to at least one compartment. The lid is formed at least partially from a transparent material so that a photograph located behind the transparent part of the lid may be seen. The two compartments are separated by a flange which projects into the interior of the container when the container is closed and the flange forms a stop abutment for photographs located in the appropriate commpartment.