Static structures (e.g. – buildings) – Rigid barrier cantilevered from vertical support
Patent
1993-05-20
1994-12-06
Ridgill, Jr., James L.
Static structures (e.g., buildings)
Rigid barrier cantilevered from vertical support
52 74, 160 22, 160 70, E04F 1006
Patent
active
053699190
DESCRIPTION:
BRIEF SUMMARY
The invention relates to an articulated arm awning.
Such awnings have been known for a long time and in a wide variety of designs.
All previously known articulated arm awnings possess at least two articulated arms with at least two elements which are connected with each other at the center pivot and are connected at their other ends in an articulated manner with a bracket or similar at the wall or ceiling attachment point as well as being connected with the fall bar or drop bar. At least the center pivot is equipped with a spring device which spans the joint and generates an expanding or elongating force. For example, DE-A 32 43 025 describes an articulated arm awning with several articulated arms, where gas pressure springs are located between a transverse tube secured to the building and the inner elements of the articulated arms or/and between the outer elements of the articulated arms and the fall bar, whereby the spring tension increases constantly during extension of the awning.
This type of articulated arm awning is normally suitable for use for large widths and awnings with a large overhang. However, if it is wished to construct especially narrow awnings which still have a large overhang, it is not possible to achieve smaller width dimensions beyond a certain minimum width, since the two articulated arms would impair each other.
A solution suggested for slightly narrower awnings is described in DE 29 04 884 C 2. In the case of the articulated arm awning described here, the articulated arms are arranged in superposed planes, so that they do not hinder each other during retraction of the awning. However, this has the disadvantage that the overall height of the awning is considerably increased.
A different solution is described in DE 27 43 748. There, an articulated arm awning is described where the swivel pin of an articulated arm is mounted on the drop bar under spring tension so that it can be moved and laterally displaced. In this solution, the reduction in width is often insufficient.
The task of the invention is to create an articulated arm awning of the type mentioned at the start which allows considerably reduced width dimensions to be achieved without increasing the overall height.
The task of the invention is solved by the characteristics of appended claims.
Further embodiments of the invention are contained in the other patent claims.
The invention will now be described in more detail on the basis of an example embodiment in conjunction with the enclosed drawing.
The drawing shows a housing 1, which contains a pivoted cloth shaft 2 which can be driven in the normal way by a (not shown) drive for extension and retraction of the awning. The awning cloth 3 which can be wound onto this cloth shaft is secured in the usual way to a fall bar 4 at its outer end. The articulated arm 5, which consists here of two parts, namely the first and second articulated arm elements 6 and 7, is attached to a main bar M of the housing at the top by a pivot joint 8 forming a first hinge, possesses a center pivot 9 forming a second hinge and is connected with the fall bar 4 by the fall bar joint 10 forming a third hinge.
Such an articulated arm can naturally also consist of more than two elements, particularly in the case of articulated arm awnings with a large overhang. In addition, it is by no means necessary that the arms are of the same length.
The drive systems required for the extension and retraction movements are naturally also provided. An important feature of this new design is that there is only one articulated arm.
In order to permit this, there is a further arm element section 11 connected to the fall bar joint 10, whereby this section can also be integrated in the fall bar itself.
As is known, spring devices are available for articulated arms of this kind which generate an elongating force so that the articulated arm is extended or folded in during extension or retraction of the articulated arm awning.
Up to now, however, it was not possible to produce a single-arm articulated arm awning. This diffic
REFERENCES:
patent: 2038259 (1936-04-01), Anton
patent: 3782443 (1974-01-01), Clauss et al.
patent: 5232036 (1993-08-01), Brutsaert
Ridgill, Jr. James L.
Technolizenz Est.
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