Static structures (e.g. – buildings) – Footing or foundation type – Concrete type
Patent
1985-10-15
1986-08-05
Bell, J. Karl
Static structures (e.g., buildings)
Footing or foundation type
Concrete type
5216913, 403 86, E02D 2742
Patent
active
046035265
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a base support for fastening a pole standing off from a foundation, provided with a base member to be anchored in the foundation which shows below a base wall being attachable in relation to the foundation by a central anchor bolt and rotatable around a first rotation axis which is substantially perpendicular to the foundation, with or without an axially insert-connectable anchor body, above it an all around running side wall, and on the top an access opening surrounded by a circular, ring-shaped bearing surface which proceeds transversely to the base wall and has such a dimension that through the access opening the anchor bolt is insertable and accessible, and provided with a pole supporting member showing above a connecting area for the pole, below an all around running side wall, and at the bottom a mounting wall having a circular supporting surface which is complementary to the bearing surface, whereby the mounting wall is provided with a central boring for permitting a rotation around a second rotation axis proceeding perpendicular to the bearing or supporting surface, whereby the central boring serves for passing through a stud bolt which has a perpendicular position to the bearing or supporting surface and secures the mounting wall to the base wall, thus establishing a firm axial clamp joint between the bearing and the supporting surface, the stud bolt being axially braced towards the mounting wall and accessible by an access opening in the upper region of the pole supporting member. A pole, within the meaning of the invention, is any oblong structural member which shall be secured with one end to the base. Profiles of any type which particularly also include hollow sections, may be concerned herewith. The definition of the term base support for pole means, in the most far-reaching understanding, that it not only applies to horizontal and inclined floors but also to perpendicular or even salient walls.
According to a prior known base support for pole of the type (CH-PS No. 622 845), the pole supporting member has to be attached to the base member by a relatively complicated construction of a bayonet catch-type connecting arrangement the loading capacity of which is not very high, so that only relatively lightweight, oblong structural members can be disposed at the pole supporting member which are not subjected to great lateral stress. On the other hand, however, the bayonet catch-type connecting arrangement can not be omitted since the pole supporting member has to be open on top for operating the central anchor bolt as well as for its insertion or removal.
A further base support for fastening a pole standing off from a foundation and having a base member to be fixed at the foundation is already known (FR-OS No. 23 13 525), whereby axially salient projections jutting from the mounting wall of the pole supporting member engage into corresponding annular recesses of the base member in order to provide an insert connection assuring an aligned fit between the base member and the pole supporting member. The axial bracing of the two members is effected by several screws disposed around the perimeter of the second rotation axis. It is a drawback of this heretofore known base support that the fixing screws respectively their co-operating nuts and counter-spanners have to be accessible from the side of the base member turned towards the foundation and that peripheral holes must be provided for passing through the screws, so that the design of the base member in the shape of a cylinder being laterally closed by a smooth wall proves to be impossible, mounting expensive and the angle of rotation of the pole supporting member is limited. This base support turns out to be unfit for high stress.
The object of this invention is to obtain a base support for fastening a pole of the type described at the outset which is also suitable for securely maintaining heavy-weight poles which are exposed to great lateral stress, i.e. in general for oblong structures which, however, are at the same time
REFERENCES:
patent: 656314 (1900-08-01), Beerbower
patent: 3289369 (1966-12-01), Marcus
patent: 4154037 (1979-05-01), Anderson
patent: 4279107 (1981-07-01), Bollmann
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