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WO2008031135A1 - Ensemble pour faire varier la longueur d'une manivelle - Google Patents

Ensemble pour faire varier la longueur d'une manivelle Download PDF

Info

Publication number
WO2008031135A1
WO2008031135A1 PCT/AU2006/001626 AU2006001626W WO2008031135A1 WO 2008031135 A1 WO2008031135 A1 WO 2008031135A1 AU 2006001626 W AU2006001626 W AU 2006001626W WO 2008031135 A1 WO2008031135 A1 WO 2008031135A1
Authority
WO
WIPO (PCT)
Prior art keywords
crank
pedal
equivalent
length
variocrank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/AU2006/001626
Other languages
English (en)
Inventor
Cornelis J. J. Scheepmaker
Lauren Patricia Hoy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2006905049A external-priority patent/AU2006905049A0/en
Application filed by Individual filed Critical Individual
Publication of WO2008031135A1 publication Critical patent/WO2008031135A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M3/00—Construction of cranks operated by hand or foot
    • B62M3/02—Construction of cranks operated by hand or foot of adjustable length
    • B62M3/04—Construction of cranks operated by hand or foot of adjustable length automatically adjusting

Definitions

  • the innovation technology is applied to the drive train of a bicycle in place of a conventional crank and pedal arrangement, and will comprise of:
  • crank arms mounted to the crank shaft on a sliding mechanism so as to allow the radial length of the cranks to be alternately increased and decreased
  • the sliding cranks will be each fitted with a follower, which runs in a cam fixed to, and is part of, the bicycle frame.
  • the cam causes the crank's length to extend beyond a 'standard' length on the down or power stroke and reduces the length of the cranks on the up or return stroke.
  • the path of the bicycle pedal will be circular, about a point forward and slightly upward of the crankshaft.
  • the design can be significantly improved when commercial production is realized.
  • the OFF-SIDE cam can be part of an aerodynamically streamlined design so as to offer minimal air resistance. This part can align and be locked to the NEAR-SIDE cam of similar streamlining.
  • crankshaft housing can be integrated into a two part die- cast component.
  • cranks outside the bicycle might provide equivalent advantage in many mechanisms utilizing a crank, such as piston engines, particularly the slower cathedral type engines as used in shipping, as these are less weight conscious applications.
  • Part G slides and clips into place.
  • a similar gate can be placed in the OFF-SIDE cam.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Transmission Devices (AREA)

Abstract

L'invention concerne la longueur de chaque manivelle de pédale (2) d'une bicyclette qui varie de façon à s'allonger lors de la course descendante (donnant ainsi au cycliste un avantage mécanique plus important) et à se raccourcir lors de la course ascendante. L'extension/la rétraction de la manivelle (2) résulte du mouvement alternatif de broches (10) maintenues dans des alésages dans la manivelle (2). Des changements de la longueur de la manivelle (2) se produisent automatiquement pendant sa rotation en raison d'un galet de came (5) sur la manivelle (2) qui est contraint à suivre une rainure de came circulaire (4) qui est décalée vers l'avant et quelque peu vers le haut par rapport au vilebrequin (1), et fixe par rapport au cadre de la bicyclette (7).
PCT/AU2006/001626 2006-09-13 2006-11-01 Ensemble pour faire varier la longueur d'une manivelle Ceased WO2008031135A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2006905049A AU2006905049A0 (en) 2006-09-13 Variocrank
AU2006905049 2006-09-13

Publications (1)

Publication Number Publication Date
WO2008031135A1 true WO2008031135A1 (fr) 2008-03-20

Family

ID=39183250

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2006/001626 Ceased WO2008031135A1 (fr) 2006-09-13 2006-11-01 Ensemble pour faire varier la longueur d'une manivelle

Country Status (1)

Country Link
WO (1) WO2008031135A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202100025721A1 (it) * 2021-10-07 2023-04-07 T Quadre S R L Gruppo di spinta per un veicolo includente almeno una ruota.
WO2025163611A1 (fr) 2024-02-02 2025-08-07 Precision-Engineer Ltd Ensemble manivelle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US571793A (en) * 1896-11-24 Bicycle
US623863A (en) * 1899-04-25 Crank mechanism for bicycles
US653873A (en) * 1897-08-24 1900-07-17 W D Malone Propelling-gear.
FR929797A (fr) * 1946-06-26 1948-01-07 Pédalier
US4960013A (en) * 1989-12-04 1990-10-02 Sander Keith D Bicycle crank assembly
US5879017A (en) * 1998-05-14 1999-03-09 Debruin; Jeffery N. Pedaling efficiency

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US571793A (en) * 1896-11-24 Bicycle
US623863A (en) * 1899-04-25 Crank mechanism for bicycles
US653873A (en) * 1897-08-24 1900-07-17 W D Malone Propelling-gear.
FR929797A (fr) * 1946-06-26 1948-01-07 Pédalier
US4960013A (en) * 1989-12-04 1990-10-02 Sander Keith D Bicycle crank assembly
US5879017A (en) * 1998-05-14 1999-03-09 Debruin; Jeffery N. Pedaling efficiency

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202100025721A1 (it) * 2021-10-07 2023-04-07 T Quadre S R L Gruppo di spinta per un veicolo includente almeno una ruota.
WO2025163611A1 (fr) 2024-02-02 2025-08-07 Precision-Engineer Ltd Ensemble manivelle

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