Driving apparatus with a speed changer for a bicycle

Details Driving apparatus with a speed changer for a bicycle Driving apparatus with a speed changer for a bicycle

1990-08-27

1992-09-01

Luong, Vinh T.

Machine element or mechanism

Elements

Cranks and pedals

74437, G05G 114, F16H 5517

Patent

active

051429373

ABSTRACT:
A driving apparatus with a speed changer for a bicycle using a pair of non-circular gears for performing an exponential function angular velocity modulation for the speed changer. The driving apparatus is provided with a primary angular velocity modulating mechanism having a first non-circular gear fixed to a first rotary shaft receiving driving power and a second non-circular gear supported to a second rotary shaft, a secondary angular velocity modulating mechanism having the second non-circular gear and a third non-circular gear supported to a third rotary shaft generating driving power through a one-way clutch, and a spring for increasing a relative angle between the first and the third rotary shafts around the second rotary shaft. The driving apparatus performs an exponential function continuous increasing mode or an exponential function continuous decreasing mode using the primary and secondary angular velocity modulating mechanisms and transmits only one-directional rotation to the third rotary shaft (output shaft) through interposition of the one-way clutch. The driving apparatus continuously changes the angular velocity ratio of a rear wheel shaft with respect to a pedal crank shaft in a substantially stepless manner.

REFERENCES:
patent: 515421 (1894-02-01), Chadbourne
patent: 589728 (1897-09-01), James
patent: 613456 (1898-11-01), Meier
patent: 1126947 (1915-02-01), Boyd
patent: 4036073 (1977-07-01), Kitano
patent: 4685348 (1987-08-01), Takami
patent: 4732054 (1988-03-01), Takamiya et al.
patent: 4765195 (1988-08-01), Takami
patent: 4781663 (1988-11-01), Reswick
patent: 4865145 (1989-09-01), Ijiri et al.
patent: 4912993 (1990-04-01), Konishi et al.

Affiliated with

Also associated with

Rating

Driving apparatus with a speed changer for a bicycle does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Driving apparatus with a speed changer for a bicycle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Driving apparatus with a speed changer for a bicycle will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-760457