Sewer tapping apparatus

Details Sewer tapping apparatus Sewer tapping apparatus

1979-09-04

1982-12-28

Arola, Dave W.

Pipe joints or couplings

With fluid pressure seal

With separate, encased pipe-gripping means

285236, 285237, F16L 304

Patent

active

043658296

ABSTRACT:
A tap is established in a sewer main by drilling an aperture in the sewer main and locating a rubber cylinder into said aperture wherein the end of said rubber cylinder is provided with toroidal protuberances immediately adjacent the exterior wall and interior wall of the sewer main. The rubber cylinder is thicker in the region between the protuberances, and an interior branch pipe is driven into the rubber cylinder for forcing the cylinder outwardly against the interior edge of the aperture in the sewer main while substantially locking the aforementioned protuberances in position. A branch pipe extension is connected either to the rubber cylinder or to the interior branch pipe.

REFERENCES:
patent: 3406988 (1968-10-01), Jones
patent: 3663042 (1972-05-01), Fowler
patent: 3879069 (1975-04-01), Oostenbrink
patent: 3953555 (1976-04-01), Gley
patent: 3958313 (1976-05-01), Rossborough
patent: 4009545 (1977-03-01), Rossborough
patent: 4019760 (1977-04-01), Streit
patent: 4155572 (1979-05-01), Bretone
Dukor Company brochure: 2 pp.

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