Pipe joints or couplings – Connector for conduit housing electromagnetic line: – Having box and connector
Patent
1989-02-02
1990-06-05
Arola, Dave W.
Pipe joints or couplings
Connector for conduit housing electromagnetic line:
Having box and connector
285331, 285424, 285915, 285906, F16L 304
Patent
active
049308157
ABSTRACT:
Ring collar for use in connecting a side branch line to a main header air duct, the ring collar having a tubular sheet metal body with an inlet, an outlet end which is tapered for easy insertion into a tubular member, and a U-shaped channel ring around the body with the open side of the channel facing the outlet end of the body; and a process for connecting the ring collar to the main header.
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Crown Products Company, Inc. Brochure--Double-Sided--on Sale, Jan. 1980.
Arola Dave W.
Crown Products Company, Inc.
Yeager Arthur G.
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