FR2295867A1 - Sprocket for bicycle pedal - is elliptical with minor axis nearly in line with pedal arms - Google Patents

Sprocket for bicycle pedal - is elliptical with minor axis nearly in line with pedal arms

Info

Publication number
FR2295867A1
FR2295867A1 FR7442984A FR7442984A FR2295867A1 FR 2295867 A1 FR2295867 A1 FR 2295867A1 FR 7442984 A FR7442984 A FR 7442984A FR 7442984 A FR7442984 A FR 7442984A FR 2295867 A1 FR2295867 A1 FR 2295867A1
Authority
FR
France
Prior art keywords
pedal
sprocket
elliptical
line
minor axis
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
FR7442984A
Other languages
French (fr)
Other versions
FR2295867B3 (en
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 FR7442984A priority Critical patent/FR2295867A1/en
Publication of FR2295867A1 publication Critical patent/FR2295867A1/en
Application granted granted Critical
Publication of FR2295867B3 publication Critical patent/FR2295867B3/fr
Granted 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
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/08—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving eccentrically- mounted or elliptically-shaped driving or driven wheel; with expansible driving or driven wheel
    • 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
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M2009/002—Non-circular chain rings or sprockets

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Gears, Cams (AREA)

Abstract

The bicycle pedal sprocket is elliptical in shape, keyed onto its shaft so that the minor axis of the ellipse extends nearly in line with the pedal arms. The design increases the effectiveness of the activity of the legs as compared with a sprocket which is completely round.
FR7442984A 1974-12-27 1974-12-27 Sprocket for bicycle pedal - is elliptical with minor axis nearly in line with pedal arms Granted FR2295867A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7442984A FR2295867A1 (en) 1974-12-27 1974-12-27 Sprocket for bicycle pedal - is elliptical with minor axis nearly in line with pedal arms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7442984A FR2295867A1 (en) 1974-12-27 1974-12-27 Sprocket for bicycle pedal - is elliptical with minor axis nearly in line with pedal arms

Publications (2)

Publication Number Publication Date
FR2295867A1 true FR2295867A1 (en) 1976-07-23
FR2295867B3 FR2295867B3 (en) 1977-09-23

Family

ID=9146683

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7442984A Granted FR2295867A1 (en) 1974-12-27 1974-12-27 Sprocket for bicycle pedal - is elliptical with minor axis nearly in line with pedal arms

Country Status (1)

Country Link
FR (1) FR2295867A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4193324A (en) * 1977-12-27 1980-03-18 Clint, Inc. Bicycle sprocket drive apparatus with elliptical pedal path
WO2012010257A1 (en) * 2010-07-23 2012-01-26 Rotor Componentes Tecnológicos S.L. Attachment of an ovoid chainring
WO2013104663A1 (en) 2012-01-11 2013-07-18 Rotor Componentes Tecnológicos S.L Crank arm spider improvement for attaching ovoid chainrings

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4193324A (en) * 1977-12-27 1980-03-18 Clint, Inc. Bicycle sprocket drive apparatus with elliptical pedal path
WO2012010257A1 (en) * 2010-07-23 2012-01-26 Rotor Componentes Tecnológicos S.L. Attachment of an ovoid chainring
US9005062B2 (en) 2010-07-23 2015-04-14 Rotor Componentes Technologicos S.L. Attachment of an ovoid chainring
WO2013104663A1 (en) 2012-01-11 2013-07-18 Rotor Componentes Tecnológicos S.L Crank arm spider improvement for attaching ovoid chainrings

Also Published As

Publication number Publication date
FR2295867B3 (en) 1977-09-23

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Legal Events

Date Code Title Description
ST Notification of lapse