Apparatus and methods for forming lateral openings in main pipel

Details Apparatus and methods for forming lateral openings in main pipel Apparatus and methods for forming lateral openings in main pipel

1998-05-07

2000-01-25

Arola, Dave W.

Pipe joints or couplings

With assembly means or feature

Molded joint facilitator

285114, 28513321, 2851333, 285197, 285423, F16L 1302

Patent

active

060170646

ABSTRACT:
In a piping system having a main pipe or fitting joined to a lateral pipe, a restraint body or sling extends about the fitting or main pipe and is secured at opposite ends to the lateral pipe. The lateral pipe, main pipe or fitting and restraint body are formed of plastic material. The restraint body includes a bend intermediate its ends for wrapping about the fitting or main pipe and has arcuate sections at its ends for solvent-welding to the lateral pipe. Any tendency toward separation of the lateral pipe and the main fitting or main pipe is resisted in tension by the restraint body and the joint is stress-relieved.

REFERENCES:
patent: 389180 (1888-09-01), Wiggins
patent: 2387154 (1945-10-01), Kalwitz
patent: 3649055 (1972-03-01), Nilsen
patent: 4135258 (1979-01-01), Braga et al.
patent: 4761024 (1988-08-01), Ewen
patent: 5199749 (1993-04-01), Corcoran
patent: 5257739 (1993-11-01), Pascaru
"Introducing Harco Push-On Joint Ductile Iron Fittings" brochure, The Harrington Corp.

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