Pipe joints or couplings – Screw
Reexamination Certificate
2006-03-28
2006-03-28
Hewitt, James M. (Department: 3679)
Pipe joints or couplings
Screw
C285S333000, C285S423000
Reexamination Certificate
active
07017951
ABSTRACT:
A strengthened pipe fitting has an internally threaded surface and a compression band. The compression band is sized to compress the internally threaded surface sufficiently so that the pipe fitting is subjected to a compressive preload. The compression band is covered with a non-corrosive material.
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Anderson Denton L.
Hewitt James M.
Sheldon & Mak
Spears Manufacturing Co.
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