Pipe joints or couplings – Flexible joint – rigid members – Resilient sleeve type
Reexamination Certificate
2008-01-22
2010-06-08
Hewitt, James M (Department: 3679)
Pipe joints or couplings
Flexible joint, rigid members
Resilient sleeve type
C285S406000, C285S420000, C285S917000, C137S315290, C138S094300, C138S099000, C251S326000
Reexamination Certificate
active
07731242
ABSTRACT:
A pipe clamp includes a deformable cylindrical sealing sleeve having a continuous side wall with a slotted opening extending 180 degrees around the circumference of the side wall adapted to receive a gate valve plate. The slotted opening has protruding lips bordered by clamping wedges. Clamps are provided for clamping the sealing sleeve to a pipe. Pressure members are provided. A clamping force with pressure members upon the clamping wedges to clamp the lips into a closed position thereby creating a fluid tight seal when the gate valve plate is removed.
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Christensen O'Connor Johnson & Kindness PLLC
Fournet Gwendolyn D
Hewitt James M
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