Pipe joints or couplings – With fluid pressure seal – With external pressure supply
Patent
1989-02-27
1990-09-11
Reese, Randolph A.
Pipe joints or couplings
With fluid pressure seal
With external pressure supply
285237, F16L 1700
Patent
active
049556410
ABSTRACT:
For use in underground sealed liquid distribution systems, embodiments of pipe seals are used to seal between various components used, such as pipes to manholes, pipes to reservoirs, pipes to pipes, repair couplings to pipes, couplings to corrugated pipe and between corrugated pipes, and tee connections to sewer pipes. In each embodiment of a pipe seal, a circumferential seal is initially substantially inserted in a circular receiving volume of a circular positioner. In some embodiments of these pipe seals, each circular positioner has two circular receiving volumes, each one receiving a circumferential seal. After the prepositioning of these pipe seals, a solidifiable liquid is directed under pressure through an opening or openings in a circular positioner to radially move a seal or seals into sealing contacts, as the solidifiable liquid increases in quantity within the circular receiving volume or volumes to move the circumferential seal or seals, in part, out of their respective circular receiving volumes and into sealing contact with a component or components of the underground sealed liquid distribution system.
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Bordas Carol I.
Mattern Jr. Roy E.
Reese Randolph A.
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