Pipe joints or couplings – Having plural independent paths – Allowing relative motion of pipes
Reexamination Certificate
2004-05-14
2008-10-21
Hewitt, James M (Department: 3679)
Pipe joints or couplings
Having plural independent paths
Allowing relative motion of pipes
C285S096000, C285S106000, C285S121300, C285S121600, C285S122100
Reexamination Certificate
active
07438325
ABSTRACT:
A rotating passage feed system for admitting pressure means into two machine parts (hub part (2), shaft (3)) which rotate relative to one another about a common axis. Conduits (17) that convey the pressure means are located in the shaft (3) and are joined to pressure means connections (6) via tapped holes while a connecting part (5) in which ring channels (8) are provided is also joined thereto. A central sleeve (9) is joined to the connecting part (5) in a non-rotatable manner. The connecting part (5) and the central sleeve (9) are produced in an inexpensive manner as lightweight structure formed from sheet metal through a shaping process.
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Metten Norbert
Rocca Umberto
Hewitt James M
Schaeffler KG
Volpe and Koenig P.C.
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