Pipe coupling with built-in grip

Pipe joints or couplings – Clamp – Wedge

Reexamination Certificate

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Details

C285S343000, C285S373000, C285S323000

Reexamination Certificate

active

07837239

ABSTRACT:
A pipe coupling including an annular clamp having an opening at least one end of its axial length for inserting therein a pipe, the annular clamp including two clamp members, an annular inclined surface extending axially from each of the clamp members, a wedge-shaped gripper arranged for sliding and abutting against the annular inclined surface, and a fastener that fastens the clamp members towards each other in a direction transverse to the axial length so as to apply a radially-inward clamping force on the pipe inserted in the opening and a radially-inward clamping force on the annular inclined surface that moves and wedges the wedge-shaped gripper in an axial direction between the annular inclined surface and the pipe.

REFERENCES:
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patent: 3432189 (1969-03-01), Buller
patent: 3499667 (1970-03-01), Preuffer
patent: 3724878 (1973-04-01), Ford
patent: 4807912 (1989-02-01), Maier
patent: 5941576 (1999-08-01), Krausz
patent: 6053504 (2000-04-01), Winterhoff et al.
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patent: 6129391 (2000-10-01), Rakieski
patent: 6328352 (2001-12-01), Geppert et al.
patent: 6565125 (2003-05-01), Robison, Jr.
patent: 6843514 (2005-01-01), Rex et al.
patent: 6851728 (2005-02-01), Minami
patent: 7571940 (2009-08-01), Krausz et al.

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