Corrosion protective band for underground pipe joints with metal

Details Corrosion protective band for underground pipe joints with metal Corrosion protective band for underground pipe joints with metal

1976-02-02

1977-09-13

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277DIG2, 285288, F16J 1538

Patent

active

RE0293946

ABSTRACT:
A system of protecting pipes with bell and spigot joints (having metal parts) from corrosion [be] by fitting between the spigot and bell at least one dry band of open celled material (preferably reticulated polyurethane foam) having a hydratable cement (preferably Portland cement) impregnated therein and engaging the band between the bell and the spigot. On wetting of the band, the cement is hydrated to form a water impervious hard sealant in the joint which releases alkalinity to protect the metal.

REFERENCES:
patent: 1662603 (1928-03-01), Ferguson
patent: 2051557 (1936-08-01), Hunzker
patent: 2140672 (1938-12-01), Gray et al.
patent: 2309658 (1943-02-01), Miller
patent: 2662555 (1953-12-01), Hirsh
patent: 3095619 (1963-09-01), Peterson
patent: 3243388 (1966-03-01), Ulfstedt
patent: 3354099 (1967-11-01), Stegeman
patent: 3729205 (1973-04-01), Kwok
patent: 3771175 (1973-11-01), Goettl
patent: 3912285 (1975-10-01), Swanson et al.

Affiliated with

Also associated with

Rating

Corrosion protective band for underground pipe joints with metal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Corrosion protective band for underground pipe joints with metal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Corrosion protective band for underground pipe joints with metal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-264605