Static structures (e.g. – buildings) – With means for split-prevention or damaged part repair
Patent
1994-06-16
1997-04-29
Friedman, Carl D.
Static structures (e.g., buildings)
With means for split-prevention or damaged part repair
52511, 522208, 52DIG4, 49463, 2482065, E04F 1908
Patent
active
056238010
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND AND SUMMARY OF THE INVENTION
The invention relates to a device for covering a wall opening, for example a breaking-through or a niche, in a wall having a tile or plate cladding on its surface.
It is already known to cover wall openings by a cover having on its outer side at least one tile or plate and consisting on its inner side at least partially of a ferromagnetic material and being held by permanent magnets cooperating with the ferromagnetic material and being provided on support members fixed on the edge of the wall opening. In such a manner a practically invisible covering of the opening is obtained because the cover member is provided on its outside with the same tiles or plates as the wall, in particular, if the joints of the tile cladding corresponds to the edge of the opening.
It is already known from the AT-PS 325,283 to dispose a frame consisting of elbows connected by connection elements within the area of the edge of the wall opening, the size of this frame being changeable and adaptable to the corresponding tile size. Permanent magnets are fixed to the elbows and cooperate with a ferromagnetic element provided on the backside of a plate-shaped cover member. Such a covering device has been shown very suitable in practice, because the frame due to its variability can be disposed exactly within the joints of the tiles and provides the covering device with the necessary stability so that it is avoided that the cover falls out in an undesired manner if it is subjected to an unintentional pressure.
However, difficulties arise if tiles or plates of big size are used, because in such a case the connection pieces connecting the elbows must be so long that the stability of the frame is no more given. Such tiles or plates of big size, for example of natural marble stone, are more and more used.
Further, it has been already proposed to fix holding elements for permanent magnets only on certain places of the edge of the wall opening, for example in the area of the corners of this wall opening. For example, it is known to anchor separate elbow elements in the wall which are provided with fixing tongues and carry the permanent magnets, or to provide separate L-shaped or S-shaped bent sheet metal strips on the side edges of the openings, which strips with their one leg are fixed to a tile confining the opening and on their other leg extending into the opening carry a permanent magnet ( AT-PS 375,128, AT-PS 355,281, FR-PS 2,364,320). Such covering devices can be used for openings of any size and for any desired size of the tiles or plates, however they show the disadvantage that they are difficult to mount and that a very exact and careful work is necessary because each elbow element or each sheet metal strip must be anchored separately, no closed frame being provided that can be inserted as a whole. Because no such closed frame is present, also the stability of this known covering devices is decreased.
From the AT-PS 375,128 it is further known to dispose the permanent magnets separately in a box-shaped seat of a carrier element consisting of a bent sheet metal strip and to fix them by means of inwardly bent brackets.
Lastly, magnetic door closures are known per se, for example for furniture pieces, refrigerators Or the like, which closures consist of a permanent magnet and a ferromagnetic element cooperating with this permanent magnet.
The present invention has at its object to provide for a device for covering a wall opening that combines the advantages of the known devices and can be used for smaller openings or tile or plate sizes as well as for bigger openings or tile or plate sizes. To solve this problem, the invention proposes a device of the initially described kind which is characterized by the combination of the following features known per se: plate and on its inner side with at least one ferromagnetic element: anchorable in the masonry; member; connection with the frame; the masonry.
By the inventive embodiment it is possible to connect the holding members for the permanent magnets a
REFERENCES:
patent: 3245165 (1966-04-01), Podoloff
patent: 3982370 (1976-09-01), Buffington
patent: 4077169 (1978-03-01), Thaw et al.
patent: 4250596 (1981-02-01), Hara et al.
patent: 4592180 (1986-06-01), Gerritsen
patent: 4910937 (1990-03-01), Sperling
Friedman Carl D.
Yip Winnie
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