GB2422359A - Reciprocatory power transmission system - Google Patents

Reciprocatory power transmission system Download PDF

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Publication number
GB2422359A
GB2422359A GB0501492A GB0501492A GB2422359A GB 2422359 A GB2422359 A GB 2422359A GB 0501492 A GB0501492 A GB 0501492A GB 0501492 A GB0501492 A GB 0501492A GB 2422359 A GB2422359 A GB 2422359A
Authority
GB
United Kingdom
Prior art keywords
pedal
wheel
free
gearing
power transmission
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.)
Withdrawn
Application number
GB0501492A
Other versions
GB0501492D0 (en
Inventor
David Peter Singleton
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 GB0501492A priority Critical patent/GB2422359A/en
Publication of GB0501492D0 publication Critical patent/GB0501492D0/en
Publication of GB2422359A publication Critical patent/GB2422359A/en
Withdrawn legal-status Critical Current

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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
    • B62M1/00—Rider propulsion of wheeled vehicles
    • B62M1/24—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers
    • B62M1/30—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers characterised by the use of intermediate gears

Abstract

The present invention comprises an arrangement to limit the movement of each pedal (A) to a high torque sector of the power stroke of a conventional bicycle. Each pedal (A) directly drives a bevel gear wheel (B) engaged transversely via an idler pinion wheel (C). A twin drive freewheel (F) is used to enable each pedal (A) to provide power, and further the outer cage of the free-wheel (F) has more teeth than the driven cage thus allowing direct engagement of teeth and reduced free-play at the beginning of each stroke.

Description

Page 1
Description
Title (for reference.) Tormax Classification Gearing for bicycles This device is intended to improve the efficiency of power transmission for bicycles or similar vehicles.
Bicycles are propelled by the repeated rotation of foot pedals moved in a circular motion.
When the pedals are positioned near the top and bottom of their power stroke the torque produced is very small. This can result in stalling, forcing a dismount on long steep inclines even in the lowest gears.
With this proposed arrangement the pedals do not move in a complete circle but are confined to the higher torque sectors of the power stroke. The pedals each move in opposite directions of rotation. Both pedals in mid-stroke position point in the same direction, depression of one causing the return of the other. The length of stroke is determined by the rider, up to a maximum of about 160 degrees whenever high torque levels are not needed.
Each pedal directly drives a gear wheel, or a sector of a gear wheel. These two bevel gears engage a transverse idler pinion which, when driven, returns the deactivated pedal.
The pedals, with attached gear wheels are free to rotate on a common axle but they are also fixed to tubular sleeves fitted over the axle for power transmission.
The longer left sleeve and the pinion gear are supported by the bicycle framework, in bush or roller bearings.
The two sleeves do not meet but each terminates on the driving gear of a double-drive free wheel which forms the centre of the chain wheel. This free wheel can be driven from either side and behaves like two free wheels with a common output; in this case the drive is from the centre of the wheel with the outer cage fixed to the chain wheel.
In order to minimise free play backlash for the uptake of transmission the driving gears of the freewheel have less teeth than the driven cage but they engage at several points in vernier fashion at intervals of a few degrees.
A protective case is added to prevent the ingression of foreign substances or particles.
Page 2
Description
Fitle (for reference.) Tormax Classification Gearing for bicycles Identification of components on drawing sheet 1.1 Tormax 1.1 L. Left. R. Right.
A. Foot pedal crank B. Bevel gear wheel.
C. Idler pinion wheel.
D. Transmission sleeve.
E. Mounting axle.
F. Twin-drive freewheel.
G. Chain wheel.
H. Gear housing.
I. Chain ports.
J. Drain hole.

Claims (1)

  1. Page 3 Claims.
    Title (for reference) Tormax.
    Classification Gearing for bicycles.
    The proposed mechanism has advantages for cyclists involved in hill climbing or cross-country riding as well as for those who lack the necessary strength or fitness for rigorous cycling.
    The reciprocating movement of the pedals allows high torque force to be applied at all times by transferring effort to the higher pedal.
    The vernier scaled gears in the twin drive freewheel reduce free-play backlash within the gearing to a minimum level.
GB0501492A 2005-01-25 2005-01-25 Reciprocatory power transmission system Withdrawn GB2422359A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0501492A GB2422359A (en) 2005-01-25 2005-01-25 Reciprocatory power transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0501492A GB2422359A (en) 2005-01-25 2005-01-25 Reciprocatory power transmission system

Publications (2)

Publication Number Publication Date
GB0501492D0 GB0501492D0 (en) 2005-03-02
GB2422359A true GB2422359A (en) 2006-07-26

Family

ID=34259621

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0501492A Withdrawn GB2422359A (en) 2005-01-25 2005-01-25 Reciprocatory power transmission system

Country Status (1)

Country Link
GB (1) GB2422359A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITRM20110695A1 (en) * 2011-12-29 2013-06-30 Gianni Cilli DEVICE TO MAXIMIZE THE EFFECTIVENESS OF USING THE MUSCULAR FORCE, IN PARTICULAR FOR BICYCLES, WHEELCHAIRS FOR DISABLED OR SIMILAR
CN104326052A (en) * 2013-07-22 2015-02-04 赵广胜 Sleeve spindle dual-transmission-rod driving device and manufacturing method thereof
WO2023167604A1 (en) * 2022-03-02 2023-09-07 Begovic Predrag Mechanical drive system with long levers
WO2023235914A1 (en) * 2022-06-06 2023-12-14 Bennett Angus Ruston Pedal assembly for a bicycle

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191327109A (en) * 1913-11-25 1915-07-15 Emil Merten Improved Hand-operated Driving-mechanism.
US4019230A (en) * 1975-06-30 1977-04-26 Pollard Melville R Reciprocating powered bicycle
GB2021235A (en) * 1978-05-17 1979-11-28 Cam Gears Ltd Oscillating transmission mechanisms
GB2086320A (en) * 1980-03-07 1982-05-12 Shelly Jacques Improvements to bicycles with a reciprocating pedalling motion
US4467668A (en) * 1982-11-30 1984-08-28 Tatch Fred G Reciprocating arc-drive mechanism
GB2153761A (en) * 1984-02-06 1985-08-29 Edward Millar Dimock Pedal cycle
GB2219261A (en) * 1988-06-03 1989-12-06 Alan David Ferrie Reciprocating human drive mechanism
GB2349125A (en) * 1999-04-24 2000-10-25 Josef Petr Prokopius Bicycle gearbox providing oscillating movement of pedals
GB2407305A (en) * 2003-10-24 2005-04-27 Frederick John Adams Reciprocatory twin lever power transmission system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191327109A (en) * 1913-11-25 1915-07-15 Emil Merten Improved Hand-operated Driving-mechanism.
US4019230A (en) * 1975-06-30 1977-04-26 Pollard Melville R Reciprocating powered bicycle
GB2021235A (en) * 1978-05-17 1979-11-28 Cam Gears Ltd Oscillating transmission mechanisms
GB2086320A (en) * 1980-03-07 1982-05-12 Shelly Jacques Improvements to bicycles with a reciprocating pedalling motion
US4467668A (en) * 1982-11-30 1984-08-28 Tatch Fred G Reciprocating arc-drive mechanism
GB2153761A (en) * 1984-02-06 1985-08-29 Edward Millar Dimock Pedal cycle
GB2219261A (en) * 1988-06-03 1989-12-06 Alan David Ferrie Reciprocating human drive mechanism
GB2349125A (en) * 1999-04-24 2000-10-25 Josef Petr Prokopius Bicycle gearbox providing oscillating movement of pedals
GB2407305A (en) * 2003-10-24 2005-04-27 Frederick John Adams Reciprocatory twin lever power transmission system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITRM20110695A1 (en) * 2011-12-29 2013-06-30 Gianni Cilli DEVICE TO MAXIMIZE THE EFFECTIVENESS OF USING THE MUSCULAR FORCE, IN PARTICULAR FOR BICYCLES, WHEELCHAIRS FOR DISABLED OR SIMILAR
CN104326052A (en) * 2013-07-22 2015-02-04 赵广胜 Sleeve spindle dual-transmission-rod driving device and manufacturing method thereof
WO2023167604A1 (en) * 2022-03-02 2023-09-07 Begovic Predrag Mechanical drive system with long levers
WO2023235914A1 (en) * 2022-06-06 2023-12-14 Bennett Angus Ruston Pedal assembly for a bicycle

Also Published As

Publication number Publication date
GB0501492D0 (en) 2005-03-02

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)