Rigid metal conduit union

Metal working – Method of mechanical manufacture – With separating – localizing – or eliminating of as-cast...

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Details

285175, 285404, 285417, 174 84S, B23P 1900, F16L 5500

Patent

active

040915239

ABSTRACT:
A sleeve having first and second interior surface portions. The first surface portion is threaded and communicates with one open end of the sleeve, and the second surface portion is smooth and communicates with the opposite open end of the sleeve. A bore is formed through the sleeve and the second surface portion thereof, and a set screw is threaded into the bore. The sleeve is first slipped, and then threaded, onto a first conduit, the conduit being first received by the smooth interior surface and then by the threaded interior surface. The end of a second conduit is then disposed adjacent the sleeve, and the sleeve is screwed back off the first conduit onto the second conduit until the first conduit is received by the smooth interior surface and the second conduit by the threaded interior surface. The set screw is threaded against the first conduit.

REFERENCES:
patent: 499815 (1893-06-01), Williams
patent: 1000043 (1911-08-01), Scism
patent: 1113520 (1914-10-01), Ward
patent: 1308853 (1919-07-01), McVoy
patent: 1956713 (1934-05-01), Fischer
patent: 2472307 (1949-06-01), Nagel

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