Pipe joints or couplings – Essential catch – Leaf spring
Reexamination Certificate
2011-07-26
2011-07-26
Hewitt, James M (Department: 3679)
Pipe joints or couplings
Essential catch
Leaf spring
C285S308000, C285S331000, C285S921000, C138S109000
Reexamination Certificate
active
07984931
ABSTRACT:
A fluid line of thermoplastic material includes a first end section integral with a principal part of the fluid line which is at least partially undulated. A first holding rib engages behind at least one locking projection of a connecting ring. The ring engages behind a second holding rib on a second end section of the pipe. The first end section has an essentially conical initial section located adjacent the principal part of the fluid line. The initial section has an outer diameter which increases in a direction toward the free end of the first end section. The initial section is adjacent to an intermediate section whose outer diameter decreases from the greatest diameter of the initial section to the smallest diameter of a locking groove for the engagement of a first locking projection.
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Chateau Jerome
Kertesz Janos
Wickel Uwe
Hewitt James M
Lucas & Mercanti LLP
NORMA Germany GmbH
Ripley Jay R
Stoffel Klaus P.
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