Pipe joints or couplings – Packed – Sleeve
Reexamination Certificate
2002-03-25
2004-04-27
Browne, Lynne H. (Department: 3752)
Pipe joints or couplings
Packed
Sleeve
C403S301000, C403S310000
Reexamination Certificate
active
06726255
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a splice joint for elongated tubes and more particularly relates to a joint connection for two elongated tubes using a smaller tube inside the two elongated tubes as the means for splicing the two elongated tubes together.
In the assembling of structures which are comprised of a plurality of elongated tubes, it is common practice to use different types of splices to join the tubes together in an assembly. For example, the tubes may contain female or male threadings on each end and couplings having male or female threads are mated with adjacent ends of two elongated tubes. In the case of tubes of rectangular configuration, it is not feasible to use threaded connections and therefore other devices must be used to make these spliced connections.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a tube-in-tube joint for joining tubes of a rectangular configuration.
It is also an object of the present invention to provide a tube-in-tube joint connection which requires no special tools for assembling.
It is a further object of the present invention to provide a tube-in-tube joint that makes a rigid alignment between the two tubes to be joined.
It is even another further object of the present invention to provide a tube-in-tube joint for rectangular shaped tubes which are easy to install and easy to take apart.
More particularly, the present invention provides for a coupling member for use in a tube-in-tube joint wherein the coupling member is of rectangular configuration with a slot extending the entire length of the coupling member. The coupling member is sized to fit within opposed ends of two elongated rectangular tubes.
Even more particularly, the present invention provides for a tube-in-tube joint which includes a first elongated tube having a first bolt opening at a preselected location adjacent one end of the first tube, a second elongated tube having a second bolt opening at a preselected location adjacent one end of said second tube which is opposed to the one end of said first elongated tube and a coupling member which is relatively short fits within the opposed ends of the first and second tubes and is provided with a slot which extends the length of the coupling member. A first bolt extends through the slot of the coupling member in the first bolt opening and a second bolt extends through the slot of the coupling member and said second bolt opening with mating nuts on each of the bolts holding the bolts in place and completing the connection of the tube-in-tube joint.
Additional objects, features and advantages of the present invention will become apparent to those skilled in the art upon consideration of the following detailed description of the preferred embodiment exemplifying the best modes of carrying out the invention as presently perceived. The detailed description particularly refers to the accompanying figures in which:
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Browne Lynne H.
Dunwoody Aaron
Lamb Charles G.
Middleton & Reutlinger
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