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FR2471907A1 - MOvable drive plates for bicycle - are fitted on either side of sprocket to drive it via cranks - Google Patents

MOvable drive plates for bicycle - are fitted on either side of sprocket to drive it via cranks Download PDF

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Publication number
FR2471907A1
FR2471907A1 FR7931558A FR7931558A FR2471907A1 FR 2471907 A1 FR2471907 A1 FR 2471907A1 FR 7931558 A FR7931558 A FR 7931558A FR 7931558 A FR7931558 A FR 7931558A FR 2471907 A1 FR2471907 A1 FR 2471907A1
Authority
FR
France
Prior art keywords
bicycle
drive
sprocket
fitted
cranks
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
FR7931558A
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.)
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 FR7931558A priority Critical patent/FR2471907A1/en
Publication of FR2471907A1 publication Critical patent/FR2471907A1/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
    • B62M3/06—Construction of cranks operated by hand or foot with elliptical or other non-circular rotary movement

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Gears, Cams (AREA)

Abstract

The pressure plate is for a bicycle which can take on its upper part a crank. This is placed on the other side of the crank wheel. The ends of the plate can be pushed and not just on the pedal pivots as normal. A second flat plate, similar to the first, but without teeth, is placed on the other side of the crank wheel. This gives coordination of the two cranks, which are retained on the plates by bolts passing through aligned holes in both.

Description

DESCRIPTIN DE L'INVENTION
La présente invention concerne les plateaux de bicyclette dits "translatifs". Dans cette optique, elle peut intéresser l'industrie de la bicyclette en général et les courses cyclistes en particulier.DESCRIPTION OF THE INVENTION
The present invention relates to so-called "translational" bicycle chainrings. With this in mind, it can interest the bicycle industry in general and bicycle racing in particular.

Le but de l'invention est de réduire lgeffort musculaire des jambes à exercer sur les pédales d'un vélo tout en produisant un développement plus grand. The object of the invention is to reduce the muscular effort of the legs to exert on the pedals of a bicycle while producing greater development.

-En effet, la particularité de 1'invention consiste en un plateau équipé d'une manivelle elle-même fixée sur la partie supé- rieure du plateau. Ce dispositif permet donc de forcer sur les extrémités du plateau et non plus sur l'axe du pédalier comme dans les modèles connus. -Indeed, the particularity of the invention consists of a plate equipped with a crank itself fixed on the upper part of the plate. This device therefore makes it possible to force on the ends of the chainring and no longer on the axle of the crankset as in the known models.

Un second plateau, semblable au premier dans sa conception, mais sans dents, équipé également d'une manivelle, est placé de 11 autre côté du pédalier pour assurer la coordination des deux manivelles. A second chainring, similar to the first in design, but without teeth, also equipped with a crank, is placed on the other side of the crankset to ensure the coordination of the two cranks.

Les plateaux sont conçus avec quatre trous filetés borgnes à leur partie supérieure pour recevoir les manivelles ellesmimes percées de quatre trous filetés. Ces manivelles viennent se fixer sur les plateaux par l'intermédiairede quatre boulons. The trays are designed with four blind threaded holes in their upper part to receive the Ellesmimes cranks drilled with four threaded holes. These cranks are fixed to the plates by means of four bolts.

tes manivelles de forme trapézoidale, aux angles arrondis, ont une largeur de 8 cm à leur base de façon à transmettre aux plateaux une meilleure répartition de 11 effort exercé sur les pédales.  your trapezoidal cranks, with rounded corners, have a width of 8 cm at their base so as to transmit to the chainrings a better distribution of the force exerted on the pedals.

Claims (3)

REVENDICATIONS 1. Un plateau de bicyclette caractérisé par le fait outil peut recevoir sur sa partie supérieure une manivelle pour mieux développer ses possibilités. 1. A bicycle tray characterized by the tool can receive on its upper part a crank to better develop its possibilities. 2. Un plateau de bicyclette sans dent selon la revendication (1) et caractérisé par le fait qu'il est placé de ltautre côté du pédalier. 2. A toothless bicycle chainring according to claim (1) and characterized in that it is placed on the other side of the crankset. 3. Deux manivelles caractérisées par le fait qu'elles sont conçues pour stadapter aux plateaux selon les revendications 1 et 2.  3. Two cranks characterized in that they are designed to stadapter to the plates according to claims 1 and 2.
FR7931558A 1979-12-18 1979-12-18 MOvable drive plates for bicycle - are fitted on either side of sprocket to drive it via cranks Pending FR2471907A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7931558A FR2471907A1 (en) 1979-12-18 1979-12-18 MOvable drive plates for bicycle - are fitted on either side of sprocket to drive it via cranks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7931558A FR2471907A1 (en) 1979-12-18 1979-12-18 MOvable drive plates for bicycle - are fitted on either side of sprocket to drive it via cranks

Publications (1)

Publication Number Publication Date
FR2471907A1 true FR2471907A1 (en) 1981-06-26

Family

ID=9233120

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7931558A Pending FR2471907A1 (en) 1979-12-18 1979-12-18 MOvable drive plates for bicycle - are fitted on either side of sprocket to drive it via cranks

Country Status (1)

Country Link
FR (1) FR2471907A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7124826B2 (en) 1998-12-22 2006-10-24 Weatherford/Lamb, Inc. Procedures and equipment for profiling and jointing of pipes
US7174764B2 (en) 2001-08-16 2007-02-13 E2 Tech Limited Apparatus for and a method of expanding tubulars

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE452839C (en) * 1927-11-21 Max Spengler Pedal crank for bicycles
FR630877A (en) * 1927-02-05 1927-12-10 New pedals for velocipedes
FR697361A (en) * 1930-06-14 1931-01-16 Crank system for cycle crankset
FR762762A (en) * 1933-08-22 1934-04-18 Special cranks integral with a toothed wheel and a flywheel for bicycles or other applications
FR1151725A (en) * 1956-06-20 1958-02-05 New assembly of the cranks of the cycle pedals

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE452839C (en) * 1927-11-21 Max Spengler Pedal crank for bicycles
FR630877A (en) * 1927-02-05 1927-12-10 New pedals for velocipedes
FR697361A (en) * 1930-06-14 1931-01-16 Crank system for cycle crankset
FR762762A (en) * 1933-08-22 1934-04-18 Special cranks integral with a toothed wheel and a flywheel for bicycles or other applications
FR1151725A (en) * 1956-06-20 1958-02-05 New assembly of the cranks of the cycle pedals

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7124826B2 (en) 1998-12-22 2006-10-24 Weatherford/Lamb, Inc. Procedures and equipment for profiling and jointing of pipes
US7174764B2 (en) 2001-08-16 2007-02-13 E2 Tech Limited Apparatus for and a method of expanding tubulars

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