Endless belt power transmission systems or components – Control for variable input to output speed-ratio – Including belt shiftable axially from one to another surface...
Reexamination Certificate
2005-01-04
2005-01-04
Bucci, David A. (Department: 3682)
Endless belt power transmission systems or components
Control for variable input to output speed-ratio
Including belt shiftable axially from one to another surface...
Reexamination Certificate
active
06837815
ABSTRACT:
A rear derailleur for bicycle gear changes, comprising a top body or hanger bracket (12) and a bottom body or pulley-cage bracket (14) connected together by means of an articulated-parallelogram mechanism (16) which comprises a pair of links (26, 28) articulated to the hanger bracket (12) and to the pulley-cage bracket (14) by means of pins (30, 32) defining the axes of articulation of the articulated-parallelogram mechanism. Each of the aforesaid pins (30, 32) engages aligned holes (48, 50) of one of the brackets (12, 14) and one of the links (26, 28) and is constrained against sliding out in the direction of its own axis. The axial constraint of each pin (30, 32) is obtained by means of at least one washer (34) having snap-action engagement portions (40) which co-operate with an annular groove (36) of the pin (30, 32).
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Bucci David A.
Campagnolo S.r.l.
Johnson Vicky A.
Volpe and Koenig P.C.
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