Pipe joints or couplings – End to side or plate – Saddle-type clamp
Reexamination Certificate
2006-07-20
2008-03-04
Hewitt, James M. (Department: 3679)
Pipe joints or couplings
End to side or plate
Saddle-type clamp
C137S317000, C137S318000, C137S015090, C137S015140
Reexamination Certificate
active
07338089
ABSTRACT:
A pipe interruption fitting having a flange is removable after pipe maintenance work has been completed. The fitting includes an upper reinforcing plate, an inner surface of which has a curvature corresponding to an outer surface of the pipe, and a vertical pipe welded to the upper reinforcing plate. The fitting further includes an adaptor welded to the vertical pipe. Bolt holes are formed in an upper surface of the adaptor. A through hole is formed through the adaptor. An annular groove is formed in an inner surface of the through hole. The flange is removably coupled to the adaptor. Coupling holes are formed in the flange for installation of a boring machine or a stopple machine. The fitting further includes a plug fitted into the through hole of the adaptor and having an expansion plate to be inserted into the annular groove. A cover is adapted to be inserted into the through hole of the adaptor and to be welded thereto.
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Becker Robert W.
Hewitt James M.
Robert W. Becker & Associates
LandOfFree
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