Joints and connections – Branched – Three or more radiating members
Patent
1990-05-10
1992-07-07
Kundrat, Andrew V.
Joints and connections
Branched
Three or more radiating members
403176, 403174, F16D 100
Patent
active
051277581
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a pipe joint for forming a junction composed of several pipes equipped with a central, longitudinally extending channel.
Pipe joints are already known in many shapes and are employed for the construction of exhibition stands, scaffolding, shelving and the like. For example, DE-OS 2,950,742 discloses a pipe joint composed of a connector and at least one pipe in which an arm of the connector can be inserted into a pipe and can there be pressed to the interior wall of the pipe by means of a screw. The connector arm is here equipped with a clamping member which is disposed and guided in a receptacle in the connector and whose clamping face can be moved by means of a screw beyond the periphery of the connector arm. In order to be able to produce different connection structures for forming a junction of several pipes, the connector arm is fixed, or connected in an angularly displaceable manner, to a T-shaped, angle, cross or star element or the like. Aside from the necessity to provide a special connector arm with an associated clamping member for each individual pipe connection of such pipe joints, it is additionally necessary to employ special connecting members for each separate type of pipe junction, which is relatively expensive.
SUMMARY OF THE INVENTION
It is the object of the invention to provide a pipe joint of the above-mentioned type which is structurally simple, can be employed for pipe joints at any desired angle and is, at the same time, reliably fixable and easily releasable.
This is accomplished according to the invention in that each pipe is connected with the continuous or discontinuous peripheral extension of a connecting element by way of a connecting member inserted into the channel from the frontal face and a clamping device composed of two oppositely disposed clamping jaws which are held together by a screw connection.
The inventive configuration of the pipe joint composed of few, simply configured individual components permits, without problems, the establishment of the most varied shapes of pipe joints, i.e. the most varied angular positions between several pipes that are connected at their front ends. It is merely necessary, after insertion of the connecting members into the pipes and insertion of the clamping devices between these connecting members and the peripheral extension of the connecting element, to bring the pipes into the desired angular position relative to one another and then tighten the screw connection of the clamping devices, thus bringing the pipes in firm contact with the frontal faces of the clamping jaws of the associated clamping device and bringing the interior faces of the clamping jaws of the clamping device in firm contact with the peripheral extension of the connecting element. To adjust the pipe connection, it is merely necessary to loosen the screw connections of the clamping devices until the clamping devices can be pivoted on the peripheral extension of the connecting element into the new, desired position and then to tighten the screw connections again.
In order to permit an infinite displacement of the pipes relative to one another over the largest possible angular range, a feature of the invention provides that the connecting element is configured as a disc-shaped semicircular or fully circular connecting element in which the extension in each case extends peripherally over the circular arc.
According to an advantageous feature of the invention, it is provided that the free end of the connecting member is equipped with two superposed, continuous detent tabs which engage in correspondingly shaped, continuous grooves in the oppositely disposed interior faces of the clamping jaws of the clamping device; the arcuate extension of the semicircular and the fully circular connecting element is provided on each longitudinal side with continuous toothing composed of two teeth which engage in corresponding, continuous recesses in the interior faces of the clamping jaws of the clamping device; and the clamping
REFERENCES:
patent: 3356394 (1967-12-01), Chamayou
patent: 4273463 (1981-06-01), Dobersch
patent: 4669908 (1987-06-01), Simone et al.
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