Supports – Props and braces – Adjustable length
Patent
1994-09-30
1997-08-05
Chan, Korie
Supports
Props and braces
Adjustable length
33493, A47F 500
Patent
active
056534159
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention concerns an adjustable-height support for shuttering in the building trade, in particular a ceiling support, consisting of an outer tube within which an inner tube is guided in a translatable fashion and which is capable of being fixed to the outer tube in a detachable fashion with, by way of example pins, threaded joints or the like.
A ceiling support of this type is, for example, known in the art as "Peri" (trademark) ceiling support HL 500.
With adjustable-length ceiling supports of prior art, a tape measure, a graduated ruler, or a yard stick is necessary when erecting the support in order to adjust the desired length of the support. The measurement of the support length requires a certain amount of time and measurement errors cannot be completely ruled out.
It is therefore the purpose of the invention to improve an adjustable-length support of the known kind in such a fashion that it is adjustable to the desired height in a rapid and precise fashion without having additional auxiliary means necessary therefor.
SUMMARY OF THE INVENTION
The purpose is achieved in accordance with the invention in that a measurement scale is provided over at least a portion of the outer periphery of the inner pipe in the longitudinal direction.
This has the advantage that the support in accordance with the invention can be adjusted to the desired length in a simple manner without additional auxiliary means.
The measurement scale is arranged in the direction of the longitudinal axis of the inner tube over a portion of the outer periphery of the inner tube. In particular embodiments, the measurement scale extends largely over the entire length of the inner tube. The measurement scale is thereby printed, stamped, riveted or glued in a clear and distinct fashion to the outer periphery of the inner tube so that it indicates, in a non-displaceable fashion, the current overall length of the adjusted support. The measurement scale units expressed, for example, in terms of numerals or other symbols, take into consideration the thickness of possible cover plates brought onto the ends of the outer or inner pipes.
The measurement scale is rigidly attached to the outer periphery of the inner pipe or integrated into the outer periphery in such a fashion that it is flush with the outer surface of the inner tube.
In particular, permanent and scratch-resistant materials are utilized for labelling the measurement scale to withstand the rough construction environment. A particularly sturdy kind of measurement scale is achieved by stamping the necessary markings into the outer periphery of the inner tube.
In a further embodiment of the invention, the measurement scale can be configured as a tape measure in a groove on the outer periphery of the inner tube. In this configuration of the measurement scale, it is possible for the tape measure to be exchanged with other tape measures having different labelling units (metric, English, inch, Japanese, Chinese and the like).
Fluorescent materials can also be utilized for labelling the measurement scale so that the measurement scale on the supports in accordance with the invention can also be clearly discernable in dark areas or under, poor visual conditions. With this type of labelling, measurements errors are largely eliminated.
In an additional embodiment of the support in accordance with the invention a plurality of measurement scales are located along the outer periphery of the inner tube. In this fashion it is possible for the length of the current support to be immediately and uniquely recognized from different perspectives so that a support suitable for a particular job can be chosen rapidly and without error.
Should the ceiling support in accordance with the invention be galvanized or made from a aluminium and exhibit appropriate scales, then the ceiling support of this kind represents a valuable tool for construction sites which can be utilized in a rapid, simple and reliable fashion.
Should adjustable-height supports be utilized which exhibit t
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patent: 4249578 (1981-02-01), Freeman
patent: 4899452 (1990-02-01), Schafer
patent: 5038493 (1991-08-01), Stabs
'Peri GmbH
Chan Korie
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