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FR838660A - Improvements to automatic extension cranks for bicycles - Google Patents

Improvements to automatic extension cranks for bicycles

Info

Publication number
FR838660A
FR838660A FR838660DA FR838660A FR 838660 A FR838660 A FR 838660A FR 838660D A FR838660D A FR 838660DA FR 838660 A FR838660 A FR 838660A
Authority
FR
France
Prior art keywords
cranks
bicycles
automatic extension
extension
automatic
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
Francois Leopold Auguste Danel
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 FR838660A publication Critical patent/FR838660A/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)
FR838660D 1937-11-22 1937-11-22 Improvements to automatic extension cranks for bicycles Expired FR838660A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR838660T 1937-11-22

Publications (1)

Publication Number Publication Date
FR838660A true FR838660A (en) 1939-03-13

Family

ID=9299159

Family Applications (1)

Application Number Title Priority Date Filing Date
FR838660D Expired FR838660A (en) 1937-11-22 1937-11-22 Improvements to automatic extension cranks for bicycles

Country Status (1)

Country Link
FR (1) FR838660A (en)

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