Pipe joints or couplings – Clamp
Reexamination Certificate
2005-01-18
2005-01-18
Nicholson, Eric K. (Department: 3679)
Pipe joints or couplings
Clamp
C285S322000, C285S382000, C285S111000, C277S605000, C277S645000, C277S626000
Reexamination Certificate
active
06843516
ABSTRACT:
A coupler for a low pressure piping system has a hollow metal tube terminating in a pair of end portions defining open ends for slidably receiving and joining together sections of other metal tubes in a substantially air tight relationship. Slots are formed in at least one of the end portions to aid in the crimping of the hollow metal tube by an annular clamp. A radial flange is formed adjacent the end portion and receives an annular seal therein. A stop for limiting the insertion of a tube section into the end of the hollow metal tube is formed on the inside of the coupler adjacent the radial flange opposite the slots. The annular clamp encircles the slots and is tightened to clamp the end portions to form metal to metal contact between the metal tubes and to form a seal between the annular seal and both metal tubes.
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Bishop John P.
Calderone Gregory A.
Dick Leland J.
Smith James F.
H-P Products, Inc.
Nicholson Eric K.
Sand & Sebolt
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