Multiple speed bicycle drive

Details Multiple speed bicycle drive Multiple speed bicycle drive

1980-02-08

1981-08-11

Pekar, John A.

Land vehicles

Wheeled

Occupant propelled type

474 72, B62M 912, B62M 1114

Patent

active

042830699

ABSTRACT:
In combination with a conventional multiple speed bicycle wherein a series of innerconnected sprockets, which connect with the driving chain from the bicycle pedal assembly, are mounted exteriorly of the hub of the driving wheel. These multiple sprockets are part of what is termed as a derailleur mechanism (gear changing mechanism). This derailleur mechanism functions such that the operator can more easily pedal the bicycle at lower speeds and at higher speeds. This derailleur mechanism is only changeable when the bicycle is moving. The second type of gear changing mechanism is to be incorporated with the hub of the driving wheel and is operable primarily when the bicycle is at rest. The second gear changing permits a change of gears when the bicycle is stopped so as to make it easier to accelerate the bicycle from the at-rest position.

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