Driving gear for vehicles particularly for bicycles

Details Driving gear for vehicles particularly for bicycles Driving gear for vehicles particularly for bicycles

1986-12-19

1988-09-20

Novosad, Stephen J.

Endless belt power transmission systems or components

Means for adjusting belt tension or for shifting belt,...

Pulley or guide roll has eccentric mount for shifting or...

74 69, F16H 710

Patent

active

047722525

ABSTRACT:
The invention realizes fluent drive without dead points by continuously cging the angle between the levers (13,14) of the pedals (1). The two pedal levers (13,14) are fixed to two separate shafts (15,16) with common axis (3). The driving shaft (18) is eccentric to this axis (3) and the mechanical connection between the driving shaft (18) and the shafts (15,16) of the pedal levers (13,14) is realized by eccentrics (19,20). With this construction the pedals move faster when coming upwards and slower when going downwards, so when the depressed pedal reaches its lowest point, the other one has already passed its highest point.

REFERENCES:
patent: 599445 (1898-02-01), Freeman

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