Static structures (e.g. – buildings) – With piercing or expanding earth anchor – Auger-type penetrator
Reexamination Certificate
2001-04-06
2004-11-23
Friedman, Carl D. (Department: 3635)
Static structures (e.g., buildings)
With piercing or expanding earth anchor
Auger-type penetrator
C052S299000, C052S741100, C052S365000, C052S366000, C052S372000, C052S126500, C052S126600, C312S351100, C108S156000, C248S156000, C248S545000, C248S530000, C248S188800, C405S229000, C405S230000, C405S231000
Reexamination Certificate
active
06820379
ABSTRACT:
The invention relates to a method for positioning and fixing beams with ground dowels and to an apparatus for implementing the method.
In the erection and positioning of beams or the like, for example in the construction of beam foundations for summerhouses or sheds, the problem always arises, in addition to the necessary horizontal or vertical alignment, of positioning the beam or beams used in their respective positions and also fixing them in those positions. Customarily, securing devices which can be anchored in the soil are used for fixing to the ground, these supporting the beam at their free upper end. The fixing of the beam to the securing device takes place after the securing device has been anchored in the soil, conventionally by the direct screwing, nailing or similar fixing of the positioned beam to the free upper end of the securing device. Direct fixing to the ground dowel has the disadvantage, when positioning or removing and when precisely aligning the beam, that, in each case, all fixing connections have to be made very accurately with a great expense of labor and time.
In practice, ground dowels that can be screwed into the soil in a corkscrew manner and on which the beam is directly fixed have proven their value; in principle, however, securing means that are anchored by being concreted in or driven in may also be used.
If, then, a beam is to be fixed in a desired position in the ground by means of a plurality of these ground dowels, it is necessary for the ground dowels, when anchored in the soil, to be aligned exactly at the desired height and in the desired position. Otherwise, the beam as a whole cannot be fixed in the predetermined position because of the possible positional inaccuracy of the individual ground dowels resulting from the positioning of the fixing securing members, defined before the ground dowel is driven in on the beam. During the driving-in operation, therefore, the position of each individual ground dowel has to be constantly rechecked and any deviation, for example resulting from stones in the soil or the like, subsequently corrected in order to ensure the fixing of the beam in the defined position. Even a slight deviation in the position of a ground dowel can only be corrected by altering the positioning of the corresponding ground dowel. This may, however, result in the loosening of the ground dowel in the soil.
Additional, movable positioning devices as inserts between beam and ground dowel are admittedly known from the prior art, but their design is elaborate and costly: in addition, even if these devices are used, positioning has to take place individually at each ground dowel.
The same applicant's WO 97/08409 has disclosed an apparatus for the vertical arrangement of an object in the shape of a pillar or pole. In this case, the object and the shape of a pillar or pole is provided with a receiving hole which can be pushed over a retaining mandrel of a securing device, especially a ground dowel, in the ground and so fixed. The retaining mandrel can be pressed into the object. As a result of axial play between the retaining mandrel and the receiving hole, vertical and, in principle, horizontal positioning of the object are possible.
The apparatus according to WO 97/08409 has proven its value in practice; even so, it suffers from the disadvantages that, first, the securing devices in the ground require specially molded-on retaining mandrels and, secondly, the objects in pole or post form have to be provided with corresponding receiving holes. This restricts the flexibility of the device in use, because of the necessary preliminary work on the objects to be fixed, and entails additional costs, especially since no securing devices in the ground with standardized receiving sections can be used.
It is an object of the present invention to provide a cost-effective and simple device and a secure and rapid method of positioning and fixing beams which permit positional deviations of the ground dowels within certain limits and nevertheless enable exact positioning without preliminary work and with a low level of effort to position the individual ground dowels.
This object is achieved, according to the invention, by a method having the features according to claim
1
and by an apparatus having the features according to claim
5
.
Advantageous further developments are defined in the respective dependent claims.
The method according to the invention offers the advantage that, when a ground dowel to be set to the desired height is placed at the desired position, the positioning of the ground dowel need not, as is customary, be exact in order to achieve exact positioning of a beam. Rather, the exact positioning takes place in the second stage of the method according to the invention as a result of the pressing of the beam into the desired exact position and alignment with a suitable retaining means of a ground dowel insert part, which is inserted into a retaining section of the ground dowel. The positioning of the retaining means relative to the pressed-on beam determines exactly the desired position of the beam as a whole relative to the ground dowel insert part inserted into the retaining section. After the beam is pressed on, the ground dowel insert part adheres permanently thereto. The ground dowel insert part can then be fixed on the beam in accordance with the positioning defined by the pressed-on retaining means. The vertical and/or horizontal position and alignment of the beam is thus defined when the positioned ground dowel insert part is inserted into the retaining section of the ground dowel, without elaborate changes and adjustments of the position of the ground dowel itself having to be undertaken. Also, as a result of the method according to the invention, no elaborate additional positioning devices are necessary between the ground dowel and the ground dowel insert part or between the ground dowel insert part and the beam, since the position of the beam is defined in a simple manner, essentially by it being pushed onto the retaining means.
In a preferred embodiment, the ground dowel insert part, fixed on the beam and inserted into the retaining section of the ground dowel, is additionally fixed in the retaining section of the ground dowel, as a result of which the beam can be secured particularly quickly, simply and securely on the ground dowel, so that, for example, the erection and dismantling of, for example, a temporary beam foundation can take place rapidly.
Preferably, the ground dowel insert part can be fixed on the beam by screwing, in the method according to the invention, which results in particularly secure fixing.
In a further embodiment, the defining of the positioning and/or the fixing of the ground dowel insert part on the beam can also be undertaken by adhesive bonding, which enables a particularly simple and rapid operation.
As a result of a baseplate of the ground dowel insert with a retaining means attached thereto, the apparatus according to the invention for the positioning and fixing of beams has the advantage, by comparison with the prior art, that the position of the beam is fixed in a simple manner in that, after being pressed on, the retaining means fixed on the baseplate of the ground dowel insert part adheres at least to the beam. No complicated and hence costly conventional positioning devices are needed in order to correct deviations of the positioned ground dowel from the exactly desired position.
Also, in the positioning of the beam on a plurality of ground dowels, such as for example in the alignment of a beam foundation, by the corresponding pressing of the beam onto the retaining means of the respective baseplates of all ground dowel insert parts, the problem does not arise that all ground dowels have to be individually exactly positioned. Therefore, the exact position of the beam is reliably defined by the retaining means of the ground dowel insert parts positioned in the retaining sections of the ground dowels and adhering to the beam or connected to the beam.
The arrangement of the retaini
Krinner Klaus
Thurner Guenther
Thurner Martin
Friedman Carl D.
Jordan and Hamburg LLP
Krinner Klaus
Varner Steve
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