FR2441534A1 - Torque multiplier for bicycle - uses pivotable extension arm on cranks to vary effective radius as pedals are driven - Google Patents

Torque multiplier for bicycle - uses pivotable extension arm on cranks to vary effective radius as pedals are driven

Info

Publication number
FR2441534A1
FR2441534A1 FR7832869A FR7832869A FR2441534A1 FR 2441534 A1 FR2441534 A1 FR 2441534A1 FR 7832869 A FR7832869 A FR 7832869A FR 7832869 A FR7832869 A FR 7832869A FR 2441534 A1 FR2441534 A1 FR 2441534A1
Authority
FR
France
Prior art keywords
pedals
cranks
bicycle
driven
short arm
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.)
Pending
Application number
FR7832869A
Other languages
French (fr)
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.)
PENLOUP EUGENE
Original Assignee
PENLOUP EUGENE
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 PENLOUP EUGENE filed Critical PENLOUP EUGENE
Priority to FR7832869A priority Critical patent/FR2441534A1/en
Publication of FR2441534A1 publication Critical patent/FR2441534A1/en
Pending 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

Abstract

The torque multiplier comprises a short arm (2), fitted to the original pedal arm. The orginal pedals are removed and a pin (1) and a ball bearing (3) is fitted in place of each, forming a pivot for the new short arm. A pedal (4, 5, 6) is refitted to the end of each short arm in the normal way. When pedalling, the short arm pivots outwards to form an extension and multiply (A+X) the torque applied in the pushing downwards position. In the opposing position, the torque is reduced (A-X as the short arm decreases the pedal arm distance.
FR7832869A 1978-11-16 1978-11-16 Torque multiplier for bicycle - uses pivotable extension arm on cranks to vary effective radius as pedals are driven Pending FR2441534A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7832869A FR2441534A1 (en) 1978-11-16 1978-11-16 Torque multiplier for bicycle - uses pivotable extension arm on cranks to vary effective radius as pedals are driven

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7832869A FR2441534A1 (en) 1978-11-16 1978-11-16 Torque multiplier for bicycle - uses pivotable extension arm on cranks to vary effective radius as pedals are driven

Publications (1)

Publication Number Publication Date
FR2441534A1 true FR2441534A1 (en) 1980-06-13

Family

ID=9215158

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7832869A Pending FR2441534A1 (en) 1978-11-16 1978-11-16 Torque multiplier for bicycle - uses pivotable extension arm on cranks to vary effective radius as pedals are driven

Country Status (1)

Country Link
FR (1) FR2441534A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2462331A1 (en) * 1979-07-27 1981-02-13 Penloup Eugene PEDAL
WO1997036779A1 (en) * 1996-03-29 1997-10-09 Javier Moresco Suarez Semi-articulated crank pedal for bicycles
WO1999026836A1 (en) * 1997-11-21 1999-06-03 Technovalley Co., Ltd. Eccentric type crank
WO2007045731A1 (en) * 2005-10-20 2007-04-26 Serge Gary System for transforming a bicycle pedal
ITMI20092169A1 (en) * 2009-12-10 2011-06-11 Ghermot Gian Giulio Guglielminotti PEDAL EQUIPPED WITH EXTENSION OF THE CRANKCASE

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR838745A (en) * 1938-06-01 1939-03-14 Elimination of neutral and automatic lengthening of a crank
FR1014960A (en) * 1950-03-23 1952-08-26 Device to improve pedaling efficiency and facilitate shifting from neutral in cycle cranksets and the like
FR2283042A1 (en) * 1974-08-28 1976-03-26 Pedrali Dominique Varying effective length bicycle pedal assembly - has pedal on spring loaded intermediate crank pivotal on main crank

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR838745A (en) * 1938-06-01 1939-03-14 Elimination of neutral and automatic lengthening of a crank
FR1014960A (en) * 1950-03-23 1952-08-26 Device to improve pedaling efficiency and facilitate shifting from neutral in cycle cranksets and the like
FR2283042A1 (en) * 1974-08-28 1976-03-26 Pedrali Dominique Varying effective length bicycle pedal assembly - has pedal on spring loaded intermediate crank pivotal on main crank

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2462331A1 (en) * 1979-07-27 1981-02-13 Penloup Eugene PEDAL
WO1997036779A1 (en) * 1996-03-29 1997-10-09 Javier Moresco Suarez Semi-articulated crank pedal for bicycles
WO1999026836A1 (en) * 1997-11-21 1999-06-03 Technovalley Co., Ltd. Eccentric type crank
WO2007045731A1 (en) * 2005-10-20 2007-04-26 Serge Gary System for transforming a bicycle pedal
FR2892374A1 (en) * 2005-10-20 2007-04-27 Gary Serge SYSTEM FOR TRANSFORMING A BIKE PEDAL
ITMI20092169A1 (en) * 2009-12-10 2011-06-11 Ghermot Gian Giulio Guglielminotti PEDAL EQUIPPED WITH EXTENSION OF THE CRANKCASE

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