Derailleur mechanism for a bicycle
Patent 4486182 Issued on December 4, 1984. Estimated Expiration Date: 
June 14, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 14, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 967877 2104301 3453899 3730012 Method and apparatus for machining components for stairs Front derailleur for a bicycle Bicycle derailleur having an improved mechanism for swinging a chain guide Patent #: 4286953 InventorAssigneeApplicationNo. 06/388208 filed on 06/14/1982US Classes:474/80, And including belt-shifter mechanism474/78Including belt shiftable axially from one to another surface of stepped pulley or coaxial pulleys of different diameterExaminersPrimary: Braun, Leslie A.Assistant: Diehl, Dwight G. Attorney, Agent or FirmInternational ClassesB62M 9/12 (20060101)B62M 9/00 (20060101) Foreign Application Priority Data1981-06-17 FRAbstractThe invention provides a mechanism which is simpler in construction, cheaper and easier to assemble. The derailleur mechanism is of the type comprising a movable device for guiding or shifting the chain connected to a support in such manner as to be displaced in translation with respect to the support by means of an actuating device. The movable device is connected to the support, on one hand, by a link and, on the other hand, by a pin-and-slot connection. The slot has the shape of an arc of a circle whose radius is equal to the distance between the two pivot pins of the link. | |
