Patent EP-0040409-A2 (EP)
Inventor: MAIER GEORG
IPC: H02B15/04
Filed: 1981-05-14
Abstract: 1. A mosaic board with a closed front face, formed without a bearing grid from blank modules (1, 2) of two different types in an alternating arrangement lined up closely to one another so as to be detachable, which modules mutually support one another without the use of additional fixing means, where the blank modules (1, 2) possess moulded-on square front plates (1C, 2C) and are open at the rear, and where the blank modules (1) of the first type possess on all the side walls (1A) moulded-on support strips (1B) which run at right angles to the front plate (1C) and are undercut on both sides, and the blank modules (2) of the second type possess on all the side walls (2A) corresponding support grooves (2B), and the support strips (1B) can be inserted into the support grooves (2B) until a stop means is reached, in such manner as to produce an aligned position of the front plates (1C, 2C), and where all the side walls (2A) of the blank modules (2) having support grooves (2B) are provided with lowered, front-parallel engaging edges (2E), and the side walls (1A) of the blank modules (1) having support strips (1B) are provided with engaging lugs which detachably engage the aforementioned engaging edges (2E), characterised by the following design : on each side wall (1A, 1B) the blank modules (1, 2) each possess two undercut support strips (1B) or support grooves (2B), as the case may be, between which are arranged the engaging lugs (1E) or the engaging edges (2E) respectively, as the case may be, the stop means which delimits the mutual displacement of the blank modules (1, 2) is formed in that the support strips (1B) or support grooves (2B), as the case may be, each terminate at the same distance from the related front plate (1C, 2C), the front plates (1C, 2C) are all equal in size and do not project beyond the side walls (1A, 2A), engaging lugs are provided on all the side walls (1A) of the blank modules (1) of the first type, at identical locations in all the side walls (1A, 2A) between the support strips or support grooves (1B, 2B), as the case may be, rectangular openings (1D, 2D) having front-parallel support edges are provided for elastic support lugs (3B) which project at right angles at the rear at opposite sides of the square front surfaces (3A) of active modules (3) which can be inserted from the front into the mosaic board in place of blank modules (1, 2), when the blank modules (1, 2) are removed, filler components (4, 5) can be inserted which serve to level the free side walls (1A, 2A) of the adjacent blank modules and which form bearing surfaces, arranged at parallel intervals from the front plate (1C, 2C), for the rear of the front face (3A) of an active module (3) which is to be inserted, which filler components are designed as T-shaped flat filler components (4) with oblique side edges (4A) of a first type which can be inserted at the front side between the two support strips (1B) of a side wall (1A) of the blank modules (1) of the first type, or else are designed as filler components (5) of a second type which can be inserted into the support grooves (2B) of a side wall (2A) of the blank modules (2) of the second type from the rear and which possess moulded-on, undercut strips (5A), and each of the filler components (4, 5) possesses, at the same locations as the side walls (1A, 2A) of the blank module (1, 2), corresponding rectangular openings (4D, 5D) with front-parallel support edges for the support lugs (3B) of the active modules (3), and the filler components (4) of the first type possess lowered engaging edges (4E), whereas the filler components (5) of the second type possess projecting engaging lugs (5E) for engagement with the engaging lugs (1E) or engaging edges (2E) respectively, as the case may be, in the side walls (1A, 2A) of the corresponding blank modules (1, 2).