Pipe joints or couplings – Flange – Clamped
Reexamination Certificate
2004-04-27
2008-12-30
Dunwoody, Aaron M (Department: 3679)
Pipe joints or couplings
Flange
Clamped
C285S406000, C285S419000, C285S420000
Reexamination Certificate
active
07469939
ABSTRACT:
A muff coupling intended for vehicle couplers includes two components formed with ring-shaped flanges, as well as a muff consisting of at least two arch parts tightenable against each other, each having an inner flute formed between two inwardly turned bulges, which flute is delimited by obliquely inclined side surfaces to, upon radial tightening of the arch parts against each other, be pressed against analogously obliquely inclined shoulder surfaces on the flanges and thereby, by wedge action, transfer axial component forces to the same, pressing the ends of the components in close contact against each other. The arch parts are formed with double sets of bulges for cooperation with double flanges on the respective component, whereby forces that are transferred between the components via the muff are distributed to a plurality of axially spaced-apart pairs of contact surfaces in an axial train of forces near the outside of the components.
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Eriksson Mats
Jernberg Gunnar
Westman Anders
Dellner Couplers AB
Dunwoody Aaron M
Kee Fannie
Young & Thompson
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