WO2000043263A1 - A device for the extension of the pedals of a bicycle during the pushing phase - Google Patents

A device for the extension of the pedals of a bicycle during the pushing phase Download PDF

Info

Publication number
WO2000043263A1
WO2000043263A1 PCT/IT1999/000097 IT9900097W WO0043263A1 WO 2000043263 A1 WO2000043263 A1 WO 2000043263A1 IT 9900097 W IT9900097 W IT 9900097W WO 0043263 A1 WO0043263 A1 WO 0043263A1
Authority
WO
WIPO (PCT)
Prior art keywords
pedals
pedal
increase
extension
determines
Prior art date
Application number
PCT/IT1999/000097
Other languages
French (fr)
Inventor
Bruno Peddis
Original Assignee
Bruno Peddis
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 Bruno Peddis filed Critical Bruno Peddis
Publication of WO2000043263A1 publication Critical patent/WO2000043263A1/en

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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

Definitions

  • the present invention concerns a device for the extension of the pedals, particularly for racing bicycles, and that will determine an increase of the power applied to the pedals and consequently an increase of the moment transmitted to the wheels, for increasing the efficiency of the push of the pedal.
  • the invention arose from the need to automatically vary only in the active phase of the push of the pedal the moment of the applied force.
  • the aimset forth is reached by meas of the device according to the present invention, comprising two pedal cranks provided with grooved guides for the passage of blocking pins inserted in passing through holes on the pedals, which thus are made sliding, and with bearings for receiving said pins mounted onto a support that is crossed in eccentric way by the shaft to which said pedal cranks are connected, so that the eccentric feature of the rotation centres of said pedal cranks around the axis, and of the pins inside said bearings, determines, in the pushing phase, an extension of said pedals that may assure an increase of the power applied to the pedals and a consequent increase of the moment transmitted to the wheels.
  • the device according to the present invention will be described hereinbelow relating to the enclosed drawings in which an embodiment is shown.
  • Figure 1 shows a lateral view of a device for extending the pedals, applied to a racing bicycle.
  • Figures 2, 3 and 4 show a scheme of the different extension and reduction positions of the pedals during rotation.
  • the enclosed figures show a device for the extension of the pedals during the pushing phase, according to the present invention, comprising:

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Control Devices (AREA)
  • Mechanical Operated Clutches (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
  • Transmission Devices (AREA)

Abstract

The device according to the present invention for the extension of the pedals, particularly for racing bicycles, and that will determine an increase of the power applied to the pedals and consequently an increase of the moment transmitted to the wheels, for increasing the efficiency of the push of the pedal, comprises two pedal cranks (1) provided with grooved guides (2) for the passage of blocking pins (3) inserted in passing through holes (5) on the pedals (4), which thus are made sliding, and with bearings (6) for receiving said pins mounted onto a support (7) that is crossed in eccentric way by the shaft (A) to which said pedal cranks are connected, so that the eccentric feature of the rotation centres of said pedal cranks around the axis, and of the pins inside said bearings, determines, in the pushing phase, an extension of said pedals that may assure an increase of the power applied to the pedals and a consequent increase of the moment transmitted to the wheels.

Description

"A DEVICE FOR THE EXTENSION OF THE PEDALS OF A BICYCLE DURING THE PUSHING PHASE"
The present invention concerns a device for the extension of the pedals, particularly for racing bicycles, and that will determine an increase of the power applied to the pedals and consequently an increase of the moment transmitted to the wheels, for increasing the efficiency of the push of the pedal.
The invention arose from the need to automatically vary only in the active phase of the push of the pedal the moment of the applied force.
The aimset forth is reached by meas of the device according to the present invention, comprising two pedal cranks provided with grooved guides for the passage of blocking pins inserted in passing through holes on the pedals, which thus are made sliding, and with bearings for receiving said pins mounted onto a support that is crossed in eccentric way by the shaft to which said pedal cranks are connected, so that the eccentric feature of the rotation centres of said pedal cranks around the axis, and of the pins inside said bearings, determines, in the pushing phase, an extension of said pedals that may assure an increase of the power applied to the pedals and a consequent increase of the moment transmitted to the wheels. The device according to the present invention will be described hereinbelow relating to the enclosed drawings in which an embodiment is shown.
Figure 1 shows a lateral view of a device for extending the pedals, applied to a racing bicycle.
Figures 2, 3 and 4 show a scheme of the different extension and reduction positions of the pedals during rotation.
The enclosed figures show a device for the extension of the pedals during the pushing phase, according to the present invention, comprising:
- pedal cranks 1, linked to a crown C and having their fulcrum with said crown in a shaft A, provided with grooved guides 2 for the passage of blocking pins 3;
- pedals 4 carrying pedals P, made sliging along said grooved guides 2 of said pedal cranks 1 by said blocking pins 3 inserted in passing through holes 5 on said pedals P;
- bearings 6 for receiving said blocking pins 3 mounted on a special support 7 crossed in eccentric manner by said shaft A, to which said pedal cranks 1 are connected.
The functioning of the device according to the present invention may be explained as follows:
- the rotation of said pedal crank 1 around said shaft A determines a linear sliding of said blocking pin 3 in said grooved guide 2 of said pedal crank 1, following to the contemporary rotating movement of the same inside said bearing 6 to which it is restrained;
- the movement of said pin 3, connected to said pedals 4 through said passing through holes 5, allows the sliding of sad pedal 4 on said pedal crank 1;
- the ecentric feature of the rotation centres of said pedal crank 1 around said axis A, and of said pin 3 inside said bearing 6, determines - during the pushing phase - an extesion of said pedals 4 which assures an increase of the power applied to said pedals P and a consequent increase of the moment transmitted to the wheels.
On the contrary, in the resting phase the pedal crank 1 undergoes a reduction of its length.

Claims

1. A device for the extensio of pedals, in particular for racing bicycles, that determines an increase of the power applied to the pedals ad a consequent increase of the moment transmitted to the wheels, for increasing the efficiency of the push of the pedal, characterized in:
- pedal cranks (1), linked to a crown (C) and having their fulcrum with said crown in a shaft (A), provided with grooved guides (2) for the passage of blocking pins (3); - pedals (4) carrying pedals (P), made sliging along said grooved guides (2) of said pedal cranks (1) by said blocking pins (3) inserted in passing through holes (5) on said pedals (P);
- bearings (6) for receiving said blocking pins (3) mounted on a special support (7) crossed in eccentric manner by said shaft (A), to which said pedal cranks (1) are connected.
2. A device according to claim 1, characterized in that the rotation of said pedal crank (1) around said shaft (A) determines a linear sliding of said blocking pin (3) inside said grooved guide (2) of said pedal crank (1) following to the contemporary rotating movement of the same inside said bearing (6) to which it is restrained.
3. A device according to claim 1, characterized in that the movement of said pin (3), connected to said pedals (4) through said passing through holes (5), allows the sliding of the same onto said pedal crank (1). device according to claim 1, characterized in that the eccentric feature of the rotation centres of said pedal crank (1) around said axis (A), and of said pin (3) inside said bearing (6), determines - during the pishing phase an extension of said pedals (4) that assure an increase of the power applied onto said pedals (P), and a consequent increase of the moment transmitted to the wheels.
PCT/IT1999/000097 1999-01-22 1999-04-19 A device for the extension of the pedals of a bicycle during the pushing phase WO2000043263A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1999RM000041 IT1306763B1 (en) 1999-01-22 1999-01-22 EXTENSION DEVICE OF THE CYCLING PEDALS IN THE PAINTED PHASE.
ITRM99A000041 1999-01-22

Publications (1)

Publication Number Publication Date
WO2000043263A1 true WO2000043263A1 (en) 2000-07-27

Family

ID=11406361

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT1999/000097 WO2000043263A1 (en) 1999-01-22 1999-04-19 A device for the extension of the pedals of a bicycle during the pushing phase

Country Status (2)

Country Link
IT (1) IT1306763B1 (en)
WO (1) WO2000043263A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001060686A1 (en) 2000-02-18 2001-08-23 Bruno Peddis Extension of a bicycle crank during the pushing phase
WO2002092418A1 (en) 2001-05-15 2002-11-21 Bruno Peddis A device for prolonging the pedal cranks of a bicycle during the pushing phase

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0093201A2 (en) * 1982-04-30 1983-11-09 Freder Stuckenbrok Driving means for bicycles and the like
US4807491A (en) * 1985-03-29 1989-02-28 Freder Stuckenbrok Pedal crank as well as a pedal crank drive for bicycles or the like and a mounting for such a pedal crank drive
EP0482246A1 (en) * 1990-07-30 1992-04-29 Ching-Jung Wu Structure of bicycle chain transmission
WO1993019976A1 (en) * 1992-03-31 1993-10-14 Powerbike Fahrräder & Komponenten Gmbh & Co. Kg Pedal crank drive for bicycles or the like

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0093201A2 (en) * 1982-04-30 1983-11-09 Freder Stuckenbrok Driving means for bicycles and the like
US4807491A (en) * 1985-03-29 1989-02-28 Freder Stuckenbrok Pedal crank as well as a pedal crank drive for bicycles or the like and a mounting for such a pedal crank drive
EP0482246A1 (en) * 1990-07-30 1992-04-29 Ching-Jung Wu Structure of bicycle chain transmission
WO1993019976A1 (en) * 1992-03-31 1993-10-14 Powerbike Fahrräder & Komponenten Gmbh & Co. Kg Pedal crank drive for bicycles or the like

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001060686A1 (en) 2000-02-18 2001-08-23 Bruno Peddis Extension of a bicycle crank during the pushing phase
WO2002092418A1 (en) 2001-05-15 2002-11-21 Bruno Peddis A device for prolonging the pedal cranks of a bicycle during the pushing phase

Also Published As

Publication number Publication date
ITRM990041A1 (en) 2000-07-22
IT1306763B1 (en) 2001-10-02

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