Metal working – Method of mechanical manufacture – With testing or indicating
Patent
1987-05-21
1988-09-13
Eley, Timothy V.
Metal working
Method of mechanical manufacture
With testing or indicating
29521, 29525, B23Q 1700
Patent
active
047698926
ABSTRACT:
There is disclosed a method of joining pipe sections of a given outside diameter, comprising the steps of providing a sleeve of a predetermined length and having an inside diameter slightly less than the outside diameter of the pipe section, forcing the end of one pipe section into one end of the sleeve to a distance approximately one half the length of the sleeve, to distend the one end of the sleeve radially to an extent slightly beyond the elastic limit of the material from which the sleeve is formed, forcing the end of the other pipe section into the second end of the sleeve to distend the second end of the sleeve radially to an extent slightly beyond its elastic limit while monitoring the force required to do so, and terminating forcing of the second pipe section into the second end of the sleeve when the required force as monitored starts to increase, indicating meeting of the ends of the pipe sections, whereby the contact pressure of the pipe ends is precisely regulated to ensure a correct contact pressure between the pipe ends and thus effective sealing of the pipe joint so formed.
REFERENCES:
patent: 3451119 (1969-06-01), Coberly et al.
patent: 4328983 (1982-05-01), Gibson
patent: 4550937 (1985-11-01), Duret
patent: 4581816 (1986-04-01), Klufas et al.
Eley Timothy V.
United Corrosion Consultants Ltd.
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