Protector for threaded connections

Details Protector for threaded connections Protector for threaded connections

1986-12-10

1988-03-29

Callaghan, Thomas F.

Pipe joints or couplings

Frangible element

Score line or groove

285 45, 285 93, 285355, 285901, 138 89, 138 96T, F16L 5700

Patent

active

047338881

ABSTRACT:
An improved pipe coupling protector including a thread protector with sleeve is disclosed. Moreover, a method of installation is also set forth. When manufactured, the sleeve is sized to fit over the threads on the exterior of a pipe end and has a surrounding end shoulder with a transverse cap. An undercut defines the cap for removal by puncturing action to enable the sleeve to move up the threads. At the time of installation, the pipe is threaded to a coupling. A lubricant or sealant is applied to the threads. The coupling and the sleeve of the present disclosure completely cover over the threads and they are sealed against atmospheric intrusion and capillary fluid flow along threads and at the coupling face by the sleeve with an underlying layer of sealant or lubricant.

REFERENCES:
patent: 1168196 (1916-01-01), Hall
patent: 1646736 (1927-10-01), Mills
patent: 1692710 (1928-11-01), Spahn
patent: 2101514 (1937-12-01), Schmaus
patent: 2121436 (1938-06-01), Lytle
patent: 2784865 (1957-03-01), Rieke
patent: 3869393 (1975-03-01), Booker
patent: 4033380 (1977-07-01), Weber
patent: 4399092 (1983-08-01), Snow, Sr. et al.

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