PEDAL CRANK TELESCOPING BICYCLE

PEDAL CRANK TELESCOPING BICYCLE

Each of pedal cranks (4) and (4) of a bicycle, comprising a main crank (41) of which base end is fixed to a crank pin (31) which passes through the center of a large gear (3) around which a chain (32) is passed and an auxiliary crank (42) which is close-fitted longitudinally slidably to the main cra...

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1. Verfasser: SUMITOMO, YOSHIYUKI
Format: Patent
Sprache:eng ; fre ; jpn
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CYCLES
LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
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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creator SUMITOMO, YOSHIYUKI
description Each of pedal cranks (4) and (4) of a bicycle, comprising a main crank (41) of which base end is fixed to a crank pin (31) which passes through the center of a large gear (3) around which a chain (32) is passed and an auxiliary crank (42) which is close-fitted longitudinally slidably to the main crank (41) and provided with a pedal (5) at its tip part, wherein a cam roller (43) is installed projectedly from the side surface of the auxiliary crank (42), a cam (6) guiding the cam roller (43) is installed on a bicycle frame (1) in parallel with the pedal crank (4) rotating plane, and the cam (6) guides the cam roller (43) so as to extend the auxiliary crank (42) gradually as the pedal crank (4) rotates from a just upright direction to a forward direction and retract the auxiliary crank (42) gradually as it rotates from a forward direction to a downward direction. Chaque manivelle (4) et (4) du pédalier d'une bicyclette comprend une manivelle principale (41), dont l'extrémité de base est fixée sur un maneton de manivelle (31) passant à travers le centre d'un grand plateau cranté (3) autour duquel passe une chaîne (32), ainsi qu'une manivelle auxiliaire (42), étroitement ajustée et coulissante longitudinalement dans la manivelle principale (41), et pourvue d'une pédale (5) au niveau de sa partie d'extrémité ; un galet de came (43) monté saillant à partir de la surface latérale de la pédale auxiliaire (42), ainsi qu'une came (6), montée sur le cadre (1) de la bicyclette et qui guide le galet de came (43) parallèlement au plan de rotation de la manivelle (4) du pédalier, de manière à déployer graduellement la manivelle auxiliaire (42), lorsque le pédalier (4) tourne pour passer d'un sens vertical vers un sens avant, et à rétracter graduellement cette manivelle (42), lorsque le pédalier tourne pour passer du sens avant vers le bas.
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Chaque manivelle (4) et (4) du pédalier d'une bicyclette comprend une manivelle principale (41), dont l'extrémité de base est fixée sur un maneton de manivelle (31) passant à travers le centre d'un grand plateau cranté (3) autour duquel passe une chaîne (32), ainsi qu'une manivelle auxiliaire (42), étroitement ajustée et coulissante longitudinalement dans la manivelle principale (41), et pourvue d'une pédale (5) au niveau de sa partie d'extrémité ; un galet de came (43) monté saillant à partir de la surface latérale de la pédale auxiliaire (42), ainsi qu'une came (6), montée sur le cadre (1) de la bicyclette et qui guide le galet de came (43) parallèlement au plan de rotation de la manivelle (4) du pédalier, de manière à déployer graduellement la manivelle auxiliaire (42), lorsque le pédalier (4) tourne pour passer d'un sens vertical vers un sens avant, et à rétracter graduellement cette manivelle (42), lorsque le pédalier tourne pour passer du sens avant vers le bas.</description><edition>7</edition><language>eng ; fre ; jpn</language><subject>CYCLES ; LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS ; PERFORMING OPERATIONS ; POWERED PROPULSION OF SLEDGES OR ; RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES ; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES ; TRANSPORTING</subject><creationdate>2000</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20000511&amp;DB=EPODOC&amp;CC=WO&amp;NR=0026080A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25555,76308</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20000511&amp;DB=EPODOC&amp;CC=WO&amp;NR=0026080A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SUMITOMO, YOSHIYUKI</creatorcontrib><title>PEDAL CRANK TELESCOPING BICYCLE</title><description>Each of pedal cranks (4) and (4) of a bicycle, comprising a main crank (41) of which base end is fixed to a crank pin (31) which passes through the center of a large gear (3) around which a chain (32) is passed and an auxiliary crank (42) which is close-fitted longitudinally slidably to the main crank (41) and provided with a pedal (5) at its tip part, wherein a cam roller (43) is installed projectedly from the side surface of the auxiliary crank (42), a cam (6) guiding the cam roller (43) is installed on a bicycle frame (1) in parallel with the pedal crank (4) rotating plane, and the cam (6) guides the cam roller (43) so as to extend the auxiliary crank (42) gradually as the pedal crank (4) rotates from a just upright direction to a forward direction and retract the auxiliary crank (42) gradually as it rotates from a forward direction to a downward direction. 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Chaque manivelle (4) et (4) du pédalier d'une bicyclette comprend une manivelle principale (41), dont l'extrémité de base est fixée sur un maneton de manivelle (31) passant à travers le centre d'un grand plateau cranté (3) autour duquel passe une chaîne (32), ainsi qu'une manivelle auxiliaire (42), étroitement ajustée et coulissante longitudinalement dans la manivelle principale (41), et pourvue d'une pédale (5) au niveau de sa partie d'extrémité ; un galet de came (43) monté saillant à partir de la surface latérale de la pédale auxiliaire (42), ainsi qu'une came (6), montée sur le cadre (1) de la bicyclette et qui guide le galet de came (43) parallèlement au plan de rotation de la manivelle (4) du pédalier, de manière à déployer graduellement la manivelle auxiliaire (42), lorsque le pédalier (4) tourne pour passer d'un sens vertical vers un sens avant, et à rétracter graduellement cette manivelle (42), lorsque le pédalier tourne pour passer du sens avant vers le bas.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record>
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subjects CYCLES
LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
PERFORMING OPERATIONS
POWERED PROPULSION OF SLEDGES OR
RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES
TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
TRANSPORTING
title PEDAL CRANK TELESCOPING BICYCLE
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