Derailleur for a bicycle

Details Derailleur for a bicycle Derailleur for a bicycle

1985-05-20

1986-10-21

Leppink, James A.

Endless belt power transmission systems or components

Control for variable input to output speed-ratio

Including belt shiftable axially from one to another surface...

474 82, F16H 900

Patent

active

046183337

ABSTRACT:
A bicycle derailleur is provided which has a pair of linkage members interposed between a base and a movable member. At least one of the linkage members is connected to a least one of the base member and the movable member such that one of (i) the at least one linkage member and (ii) the aforesaid at least one of the base member and the movable member comprises an insertion region having a pair of mounting walls and the other of (i) the at least one linkage member and (ii) the aforesaid at least one of the base member and the movable member comprises an insertion portion inserted between the mounting walls. A link pin is disposed between the mounting walls and passes through the insertion portion. One of (i) both the mounting walls and (ii) opposite surfaces of the insertion portion opposite to the mounting walls includes an annular recess surrounding the link pin. A sealing member is disposed in each annular recess to prevent water, mud, and debris from entering into a space surrounding the link pin.

REFERENCES:
patent: 4226131 (1980-10-01), Yamasaki
patent: 4259873 (1981-04-01), Nagano et al.
patent: 4348198 (1982-09-01), Shimano

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