FLERTRINS-TRANSMISSION TIL CYKLER

A multi-speed bicycle transmission located in the pedal hub and actuable through the drive pedals. Drive gears (92, 94, 96) are rotatable about the pedal shaft (32) and can be selectively brought into driving engagement with the shaft by means of a mechanism including a shiftcollar (312), the axial...

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Bibliographic Details
Main Author LAPEYRE, FERNAND S
Format Patent
LanguageDanish
Published 20.02.1989
Edition4
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
CYCLES
LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
POWERED PROPULSION OF SLEDGES OR
RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES
TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
TRANSPORTING
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Summary:A multi-speed bicycle transmission located in the pedal hub and actuable through the drive pedals. Drive gears (92, 94, 96) are rotatable about the pedal shaft (32) and can be selectively brought into driving engagement with the shaft by means of a mechanism including a shiftcollar (312), the axial position of the collar along the pedal shaft determining which drive gear is engaged. A shift pin (308) extends into the hub from a tubular frame member and is displaceable radially against a spring (310). Inclined camming channels (320,322) in the shift collar (312) cooperate with the shift pin and are shaped to effect longitudinal displacement of the collar upon reverse rotation of the pedal shaft. On forward rotation of the pedal shaft, the shift pin (308) is forced radially outwardly and no longitudinal displacement of the collar is effected.
Bibliography:Application Number: DK19790005280