FR974821A - Compass system for varying the length of the bicycle crank arm by a continuous mechanism - Google Patents

Compass system for varying the length of the bicycle crank arm by a continuous mechanism

Info

Publication number
FR974821A
FR974821A FR974821DA FR974821A FR 974821 A FR974821 A FR 974821A FR 974821D A FR974821D A FR 974821DA FR 974821 A FR974821 A FR 974821A
Authority
FR
France
Prior art keywords
varying
length
crank arm
bicycle crank
compass system
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.)
Expired
Application number
Other languages
French (fr)
Inventor
Jean Billault
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 filed Critical
Application granted granted Critical
Publication of FR974821A publication Critical patent/FR974821A/en
Expired 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
FR974821D 1948-11-12 1948-11-12 Compass system for varying the length of the bicycle crank arm by a continuous mechanism Expired FR974821A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR974821T 1948-11-12

Publications (1)

Publication Number Publication Date
FR974821A true FR974821A (en) 1951-02-26

Family

ID=9517698

Family Applications (1)

Application Number Title Priority Date Filing Date
FR974821D Expired FR974821A (en) 1948-11-12 1948-11-12 Compass system for varying the length of the bicycle crank arm by a continuous mechanism

Country Status (1)

Country Link
FR (1) FR974821A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564796A1 (en) * 1984-05-23 1985-11-29 Bourgouin Bernard Pedal box with cranks of variable geometry.
WO2003104074A1 (en) * 2002-05-06 2003-12-18 Bojan Boncelj Fast bicycle with two-fold pedals
FR2889158A1 (en) * 2005-07-28 2007-02-02 Andre Farison Pedal assembly e.g. for a bicycle has cranks with pivoted extensions and additional chainwheel to reduce effort
AT526263A1 (en) * 2022-07-11 2024-01-15 Ritzinger Otto Crank drive with cable arm extension for bicycles and the like

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564796A1 (en) * 1984-05-23 1985-11-29 Bourgouin Bernard Pedal box with cranks of variable geometry.
WO2003104074A1 (en) * 2002-05-06 2003-12-18 Bojan Boncelj Fast bicycle with two-fold pedals
FR2889158A1 (en) * 2005-07-28 2007-02-02 Andre Farison Pedal assembly e.g. for a bicycle has cranks with pivoted extensions and additional chainwheel to reduce effort
AT526263A1 (en) * 2022-07-11 2024-01-15 Ritzinger Otto Crank drive with cable arm extension for bicycles and the like

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