Supports – Brackets – Specially mounted or attached
Patent
1993-03-23
1995-07-04
Ramirez, Ramon O.
Supports
Brackets
Specially mounted or attached
2482057, A45D 4214
Patent
active
054293332
DESCRIPTION:
BRIEF SUMMARY
CROSS REFERENCE TO RELATED APPLICATIONS
This is a national phase application corresponding to PCT/DE 92/00425 filed May 21, 1992 and based in turn upon the German application P 41 25 889.4 filed Aug. 5, 1991 under the International Convention.
The invention relates to a device as well as a method for temporary attachment of holding or fastening means to a surface having irregularities, whereby the vacuum principle used in suction attachments is applied.
BACKGROUND OF THE INVENTION
There are known devices having a suction attachment connected to a vacuum pump and which is applied to workpiece in order to be used as load hook. Further known are suction attachments in connection with drilling devices, whereby these suction attachments serve as equipment holders (DE 35 01 753, DOS 27 44 463). From French Patent 1 595 727 a suction cup with a compressible pad made of porous rubber is known.
Finally, vacuum holding devices are known which work with plate-shaped or cup-shaped suction elements, which on the side facing away from the workpiece to be held are provided with sealing lips or a sealing ring, whereby the latter is made of a very soft, elastically deformable material and is designed as special, separate part and connected with the suction element (DE-AS 27 23 16).
The task of these known devices is to hold or to transport loads, such as drilling equipment. A precondition for the acceptable operation of these devices is a basically even, smooth, dense and homogeneous surface of the load to be transported. The suction elements known from DE-AS 27 23 616 and French Patent 1 595 727 can also be used on a substrate which is not completely even, but provided a predetermined negative pressure is constantly maintained.
OBJECTS OF THE INVENTION
It is the object of the invention to provide a device based on the vacuum principle for the temporary attachment of holding or fastening means which can be affixed to a surface having irregularities and/or which is inclined;
Still another object is to provide such device that continues to have sufficient holding power after the negative pressure has been reduced or eliminated; and
Yet another object is to provide a method for mounting the device according to the invention.
SUMMARY OF THE INVENTION
Such tasks have to be frequently performed not only in industry, trades, but also in private life. For instance, in construction it is a matter of creating support for a concrete encasing, of fastening scaffolding, of affixing a mounting on an inclined roof surface or simply of securing a freely set cable in several points at a corresponding height.
In order to solve this problem, the invention stems out from such a known device as described in French Patent 15 95 727. The device consists of a mounting plate traversed by vacuum passages and bearing on one side the holding or fastening element, and of other side of the plate which serves sealing purposes and is provided with a closed roll of compressible material.
According to the invention, the mounting plate is designed as a plane-parallel and stiff holding plate, on whose sealing side a roll is applied as a plastically deformable sealing mass.
Thereby it is advantageous to use a corrosion-resistant plastic material with surface adhesion for the holding plate, whereby polypropylene proves to be particularly suitable as a plastic material.
This holding plate can have one or more vacuum connections running in the plane of the plate or vertically to the plate plane. In the first instance they run as channels ending in suction openings. Several vacuum connections in such the plate offer the possibility to create several vacuum chambers by mounting several closed rolls of a plastically deformable sealing mass, therefore limiting the unsealed areas of the substrate.
In order to maintain a sufficient volume of vacuum when the holding plate is affixed to an uneven surface, it is advisable to insert one or more limiters in the sealing side of the holding plate as spacers with its length suitably adjustable. For this purpose it i
REFERENCES:
patent: 2749097 (1956-06-01), Billner
patent: 3028131 (1962-04-01), Beck et al.
patent: 4012007 (1977-03-01), Cunningham
patent: 4356989 (1982-11-01), Ireland
patent: 5014946 (1991-05-01), Gruber
Chan Korie
Dubno Herbert
Ramirez Ramon O.
Wilhelm Klein GmbH
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