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1. WO1990003303 - BELT DRIVE SYSTEMS FOR BICYCLES

Publication Number WO/1990/003303
Publication Date 05.04.1990
International Application No. PCT/US1989/004172
International Filing Date 26.09.1989
Chapter 2 Demand Filed 16.01.1990
IPC
B62M 9/12 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
9Transmissions characterised by use of an endless chain, belt, or the like
04of changeable ratio
06using a single chain, belt, or the like
10involving different-sized wheels selectively engaged by the chain, belt, or the like
12the chain, belt, or the like being laterally shiftable
B62M 9/16 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
9Transmissions characterised by use of an endless chain, belt, or the like
16Tensioning or adjusting equipment for chains, belts, or the like
CPC
B62M 9/12
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR ; SINGLE-TRACK; CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
9Transmissions characterised by use of an endless chain, belt, or the like
04of changeable ratio
06using a single chain, belt, or the like
10involving different-sized wheels, ; e.g. rear sprocket chain wheels; selectively engaged by the chain, belt, or the like
12the chain, belt, or the like being laterally shiftable ; , e.g. using a rear derailleur
B62M 9/16
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR ; SINGLE-TRACK; CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
9Transmissions characterised by use of an endless chain, belt, or the like
16Tensioning or adjusting equipment for chains, belts or the like
Applicants
  • MAQUIRE, Lowell, L. [US]/[US]
Inventors
  • MAQUIRE, Lowell, L.
Agents
  • HALL, William, D.
  • HALL, William, D.
Priority Data
250,44428.09.1988US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) BELT DRIVE SYSTEMS FOR BICYCLES
(FR) SYSTEME D'ENTRAINEMENT A COURROIE POUR BICYCLETTES
Abstract
(EN)
A bicycle has a belt (1600) and pulleys (1400, 1500) in place of the usual chain and sprockets. Each pulley (1400, 1500) has three (more or less) raceways (1400a, 1400b, 1400c, 1500a, 1500b, 1500c) that have openings (1430) that permit the belt (1600) to be shifted. A rotatable arm (1800) pivoted to the frame (1000) of the bicycle controls the shifting of the belt (1600) to the desired raceway. One end of the arm (1800) applies lateral pressure to the belt (1600) just before it arrives at the pulley (1400) associated with the driving pedals (1300) of the bicycle, to shift raceways of the driving pulley (1400). Similarly the other end of the arm (1800) applies lateral pressure to the belt (1600) just before it enters the driven pulley (1500) to shift raceways of that pulley (1500). Each end of the arm (1800) is biased by a main spring (1810) to apply vertical pressure to the belt (1600) to maintain it tight.
(FR)
Une bicyclette comporte une courroie (1600) ainsi que des poulies (1400, 1500) à la place de la chaîne et des roues dentées habituelles. Chaque poulie (1400, 1500) comporte trois pistes (plus ou moins) (1400a, 1400b), 1400c, 1500a, 1500b, 1500c) dotées d'ouvertures (1430) permettant de décaler la courroie (1600). Un bras rotatif (1800) pivotant par rapport au cadre (100) de ladite bicyclette commande le décalage de la courroie (1600) jusqu'à la piste désirée. Une extrémité du bras (1800) applique une pression latérale à la courroie (1600) juste avant qu'elle n'arrive à la poulie (1400) associée aux pédales d'entraînement (1300) de la bicyclette, afin de décaler les pistes de la poulie d'entraînement (1400). De même l'autre extrémité du bras (1800) applique une pression latérale sur la courroie (1600) juste avant qu'elle ne pénètre dans la poulie entraînée (1500) afin de décaler les pistes de cette poulie (1500). Chaque extrémité du bras (1800) est sollicitée par un ressort principal (1810) afin d'appliquer une pression verticale sur la courroie (1600) pour la maintenir tendue.
Also published as
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