Pipe joints or couplings – Connector for conduit housing electromagnetic line: – Having box and connector
Patent
1989-08-10
1992-04-28
Arola, Dave W.
Pipe joints or couplings
Connector for conduit housing electromagnetic line:
Having box and connector
2853827, F16L 4100
Patent
active
051081342
DESCRIPTION:
BRIEF SUMMARY
This invention relates to pipe connections of a type not requiring the use of solder or other flowable sealant and not requiring the use of flux.
Heretofore, there have been two types of pipe connections, known as capilliary joints and as compression joints. The capilliary joint is made by heating a close fitting pipe connection between two pipes, the connection containing an internal ring of solder, whereby the solder, which is a lead alloy, melts and flows between the wall interstices thereafter cooling to solidify and make a fluid-tight connection. The forming of this type of connection has disadvantages in that it requires heat, normally in the form of a blow lamp or torch, to melt the solder. This operation is a fire hazard. Also, the solder since it contains lead has health hazards. Further, to make the connection, it is necessary to use flux which is corrosive to metal and damaging to the hands of the user, and if the flux is not fully used up during the heating process, it remains in the connection and, like the solder, has health hazards. A pre-requisite for the success of this type of connection is that the wall surfaces at the interstices are to be clean, and no water has to be flowing in the pipe. The compression joint consists of a ring or olive of brass or copper being compressed between a threaded part of a connection housing and a compression nut which shrouds the threaded part of the housing. Under compression the olive which can have a chamfered cross-section, deforms to bite into the pipe so that a fluid-tight connection is formed. This connection while it has not the disadvantages of the capilliary joint does have its own disadvantages which have in fact caused the capilliary joint, despite its disadvantages, to become the more popular and widely used. The disadvantages of the compression joint are ones of costs to produce and labour costs to fit, apart from the fact that it is bulkier and therefore more noticable than the capilliary joint. Also, there is the problem that, at least for domestic requirements, the pipes to be aesthetically pleasing have to be fitted near to walls or in corners. This means that there is limited access for a spanner or like tool to turn the nuts onto the threaded parts of the housings, and therefore it takes longer to tighten and form each connection.
An object of the present invention is to provide means to make pipe connections which obviate or mitigate the aforesaid disadvantages.
Accordingly, a first aspect of the present invention is a method of connecting two pipes together in end-to-end relationship comprising forming one pipe with a socket end and the other pipe with a spigot end, the socket end being provided with an annular portion of increased diameter and being of a malleable material, providing an annular element in the connection between the two mated pipes and crimping the socket end around the element and the spigot end to form a fluid-tight connection.
Also accordingly, a second aspect of the present invention is means to make pipe-to-pipe connections comprising a pipe for use with others of its kind, the pipe having a socket end to receive a spigot end of the pipe to be connected therewith, the socket end being provided with an annular portion of increased diameter and being of a malleable material capable of being crimped around said spigot end of the mated pipe, there being an annular element provided within the connection.
Further accordingly, a third aspect of the present invention is a pipe assembly formed from a plurality of pipes fitted in end-to-end relationship with means to make pipe-to-pipe connections each comprising a pipe being provided with a socket end to receive a spigot end of the pipe to be connected therewith, the socket end being provided with an annular portion of increased diameter and being of a malleable material capable of being crimped around the spigot end of the mated pipe, there being an annular element of complementary shape provided within the connection to seat inside of the annular portion of the socket, e
REFERENCES:
patent: 347947 (1886-08-01), Miles
patent: 1042262 (1977-08-01), Mooney et al.
patent: 3149861 (1964-09-01), Larsson
patent: 3632141 (1972-01-01), Larsson
patent: 3675949 (1972-07-01), Dawson
patent: 4103937 (1978-08-01), Wakefield
patent: 4850096 (1989-01-01), Gotoh et al.
LandOfFree
Pipe connections does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pipe connections, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pipe connections will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1242769