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ES2061367A2 - Mechanism for actuating the sprocket (gearwheel) of bicycles - Google Patents

Mechanism for actuating the sprocket (gearwheel) of bicycles

Info

Publication number
ES2061367A2
ES2061367A2 ES09201712A ES9201712A ES2061367A2 ES 2061367 A2 ES2061367 A2 ES 2061367A2 ES 09201712 A ES09201712 A ES 09201712A ES 9201712 A ES9201712 A ES 9201712A ES 2061367 A2 ES2061367 A2 ES 2061367A2
Authority
ES
Spain
Prior art keywords
path
connecting rods
fact
piece
shaft
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.)
Granted
Application number
ES09201712A
Other languages
Spanish (es)
Other versions
ES2061367R (en
ES2061367B1 (en
Inventor
Urquiza D Pedro M Barroeta
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
Application filed by Individual filed Critical Individual
Priority to ES9201712A priority Critical patent/ES2061367B1/en
Publication of ES2061367A2 publication Critical patent/ES2061367A2/en
Publication of ES2061367R publication Critical patent/ES2061367R/es
Application granted granted Critical
Publication of ES2061367B1 publication Critical patent/ES2061367B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Pivots And Pivotal Connections (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)

Abstract

The mechanism is provided to enable the connecting rods of the pedals and bottom bracket bearing assembly of a bicycle to lengthen and/or shorten during the downward and/or upward, respectively, rotational paths of the actual actuating pedals, giving rise to the fact that, during the path of greater force, which is the downward path, the connecting rod lengthens and acquires greater leverage, whilst in the ascending path, where the force is practically zero, the connecting rod shortens, thereby reducing the circumferential path of the actual pedal. The mechanism is based on the fact that the shaft 3 on which the connecting rods are mounted is fixed and is secured eccentrically inside a hollow cylinder 2 which, on its periphery, has individual bearings 5 to which are secured the bushes 13 in which there are freely rotating rollers 12 emerging from the inner face of the arms 7 which constitute the connecting rods together with the pieces 6 mounted precisely at the ends of the shaft 3, the arm 7 being linked to the piece 6 with the possibility of axial displacement with respect to said piece 6.
ES9201712A 1992-08-14 1992-08-14 "DRIVE MECHANISM OF THE CATALINA OF BICYCLES" Expired - Lifetime ES2061367B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES9201712A ES2061367B1 (en) 1992-08-14 1992-08-14 "DRIVE MECHANISM OF THE CATALINA OF BICYCLES"

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES9201712A ES2061367B1 (en) 1992-08-14 1992-08-14 "DRIVE MECHANISM OF THE CATALINA OF BICYCLES"

Publications (3)

Publication Number Publication Date
ES2061367A2 true ES2061367A2 (en) 1994-12-01
ES2061367R ES2061367R (en) 1996-08-01
ES2061367B1 ES2061367B1 (en) 1997-02-16

Family

ID=8277987

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9201712A Expired - Lifetime ES2061367B1 (en) 1992-08-14 1992-08-14 "DRIVE MECHANISM OF THE CATALINA OF BICYCLES"

Country Status (1)

Country Link
ES (1) ES2061367B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2159222A1 (en) * 1998-10-27 2001-09-16 Martinez Victor Garcia System to improve the efficiency of motion transmission mechanisms of the rod-crank and similar types.
GB2512204A (en) * 2014-02-28 2014-09-24 Alan John Robinson A cycling aid

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR973667A (en) * 1941-10-31 1951-02-13 Variable cranks for bicycles or other gear
WO1981001620A1 (en) * 1979-12-05 1981-06-11 J Chattin Pedal telescoping device
FR2498715A2 (en) * 1981-01-27 1982-07-30 Leroy Ernest Variable length pedal crank for bicycle - has crank arm fixed to roller bearing travelling in oval channel cut into crank shaft casing
US4706516A (en) * 1985-04-24 1987-11-17 La Xi Pedal mechanism for a bicycle having the pedal crank radially movable therein
ES2009316A6 (en) * 1988-07-04 1989-09-16 Larrauri Urrutia Luis Pedalier group for bikes. (Machine-translation by Google Translate, not legally binding)
US4960013A (en) * 1989-12-04 1990-10-02 Sander Keith D Bicycle crank assembly
US5070744A (en) * 1990-07-30 1991-12-10 Wu Ching Jung Structure of bicycle chain transmission

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR973667A (en) * 1941-10-31 1951-02-13 Variable cranks for bicycles or other gear
WO1981001620A1 (en) * 1979-12-05 1981-06-11 J Chattin Pedal telescoping device
FR2498715A2 (en) * 1981-01-27 1982-07-30 Leroy Ernest Variable length pedal crank for bicycle - has crank arm fixed to roller bearing travelling in oval channel cut into crank shaft casing
US4706516A (en) * 1985-04-24 1987-11-17 La Xi Pedal mechanism for a bicycle having the pedal crank radially movable therein
ES2009316A6 (en) * 1988-07-04 1989-09-16 Larrauri Urrutia Luis Pedalier group for bikes. (Machine-translation by Google Translate, not legally binding)
US4960013A (en) * 1989-12-04 1990-10-02 Sander Keith D Bicycle crank assembly
US5070744A (en) * 1990-07-30 1991-12-10 Wu Ching Jung Structure of bicycle chain transmission

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2159222A1 (en) * 1998-10-27 2001-09-16 Martinez Victor Garcia System to improve the efficiency of motion transmission mechanisms of the rod-crank and similar types.
GB2512204A (en) * 2014-02-28 2014-09-24 Alan John Robinson A cycling aid
GB2512204B (en) * 2014-02-28 2015-02-25 Alan John Robinson A cycling aid
US10259525B2 (en) 2014-02-28 2019-04-16 Alan John Robinson Cycling aid

Also Published As

Publication number Publication date
ES2061367R (en) 1996-08-01
ES2061367B1 (en) 1997-02-16

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