Pipe joints or couplings – With casing – lining or protector – Insulated
Patent
1976-02-06
1978-01-03
Arola, Dave W.
Pipe joints or couplings
With casing, lining or protector
Insulated
285369, 285379, 285383, F16L 1112
Patent
active
040662837
ABSTRACT:
To join two pipe sections carrying fluids that may be at relatively high pressures, a coupling body into which the ends of the pipe sections are inserted has a gasket seal at each end thereof. In order to electrically insulate the sections of pipe from one another, an insulating sleeve is located along a length of the internal surface of the coupling body. An insulating stop member is slidable within the sleeve to separate the ends of the sections of pipe, the stop member being prevented from entering the length of the coupling body that does not have an insulating sleeve. Threads for coupling nuts utilized in achieving the fluid tight seal are formed in the outer surface of the coupling body at each end thereof.
REFERENCES:
patent: 848549 (1907-03-01), Howley et al.
patent: 1536785 (1925-05-01), Gold
patent: 2269695 (1942-01-01), Scharf
patent: 3632141 (1972-01-01), Larsson
patent: 3700266 (1972-10-01), Glehn
patent: 3944262 (1976-03-01), Stiner et al.
Tec-Line advertising brochure; series 101 Insulated Coupling, 2 pages, Tec-Line Products, 4975 Starr St., SE. Grand Rapids, MI 49506, Tele. 616-949-4530.
Arola Dave W.
Chicago Fittings Corporation
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