NL7806268A - Bicycle crank drive mechanism - has each crank pivoted to lever secured on crankshaft and has roller on each crank guided in enclosed curved track - Google Patents

Bicycle crank drive mechanism - has each crank pivoted to lever secured on crankshaft and has roller on each crank guided in enclosed curved track

Info

Publication number
NL7806268A
NL7806268A NL7806268A NL7806268A NL7806268A NL 7806268 A NL7806268 A NL 7806268A NL 7806268 A NL7806268 A NL 7806268A NL 7806268 A NL7806268 A NL 7806268A NL 7806268 A NL7806268 A NL 7806268A
Authority
NL
Netherlands
Prior art keywords
crank
crankshaft
roller
curved track
guided
Prior art date
Application number
NL7806268A
Other languages
Dutch (nl)
Original Assignee
Geert Spakman
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 Geert Spakman filed Critical Geert Spakman
Priority to NL7806268A priority Critical patent/NL7806268A/en
Publication of NL7806268A publication Critical patent/NL7806268A/en

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
    • B62M3/06—Construction of cranks operated by hand or foot with elliptical or other non-circular rotary movement

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

The bicycle crank mechanism has a crank (13) with pedal (14) on each side, pivotably (3) connected to a lever (15) which is firmly secured to the crank shaft (7). A roller (12) on the crank is guided along a curved track (11) around the crankshaft. The arrangement is such that, when the pedal travels through 180 deg. the crankshaft rotates through an angle >= than 180 deg. The curved track may be a circle which is eccentric relative to the crankshaft, or it may be an ellipse or a combination of different curves. The eccentricity of the track may be adjustable between a number of selectable positions.
NL7806268A 1978-06-08 1978-06-08 Bicycle crank drive mechanism - has each crank pivoted to lever secured on crankshaft and has roller on each crank guided in enclosed curved track NL7806268A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7806268A NL7806268A (en) 1978-06-08 1978-06-08 Bicycle crank drive mechanism - has each crank pivoted to lever secured on crankshaft and has roller on each crank guided in enclosed curved track

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7806268A NL7806268A (en) 1978-06-08 1978-06-08 Bicycle crank drive mechanism - has each crank pivoted to lever secured on crankshaft and has roller on each crank guided in enclosed curved track

Publications (1)

Publication Number Publication Date
NL7806268A true NL7806268A (en) 1979-12-11

Family

ID=19831009

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7806268A NL7806268A (en) 1978-06-08 1978-06-08 Bicycle crank drive mechanism - has each crank pivoted to lever secured on crankshaft and has roller on each crank guided in enclosed curved track

Country Status (1)

Country Link
NL (1) NL7806268A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995019909A1 (en) * 1994-01-19 1995-07-27 Virgilio Vardanega Device for increasing efficiency of the thrust made by means of pedal cranks on bicycles and the like
FR2917060A1 (en) * 2007-06-05 2008-12-12 Jacques Cerdan Bicycle's crankset, has connection elements formed of driving cranks of driving pedals and rod, which is articulated on rotating plate of movement transmission mechanisms and on driving cranks
GR1008975B (en) * 2015-08-31 2017-03-10 Αντωνιος Κωνσταντινου Μαστροκαλος Converter converting the dynamic motion of a horizontally-positioned chain-tied bell crank into rotary motion
FR3139112A1 (en) * 2022-08-28 2024-03-01 Jacques Cerdan Cycle crankset with independent cranks.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995019909A1 (en) * 1994-01-19 1995-07-27 Virgilio Vardanega Device for increasing efficiency of the thrust made by means of pedal cranks on bicycles and the like
FR2917060A1 (en) * 2007-06-05 2008-12-12 Jacques Cerdan Bicycle's crankset, has connection elements formed of driving cranks of driving pedals and rod, which is articulated on rotating plate of movement transmission mechanisms and on driving cranks
GR1008975B (en) * 2015-08-31 2017-03-10 Αντωνιος Κωνσταντινου Μαστροκαλος Converter converting the dynamic motion of a horizontally-positioned chain-tied bell crank into rotary motion
GR20150100380A (en) * 2015-08-31 2017-04-10 Αντωνιος Κωνσταντινου Μαστροκαλος Converter converting the dynamic motion of a horizontally-positioned chain-tied bell crank into rotary motion
FR3139112A1 (en) * 2022-08-28 2024-03-01 Jacques Cerdan Cycle crankset with independent cranks.

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Legal Events

Date Code Title Description
BV The patent application has lapsed