GB2487743A - Direct drive bicycle - Google Patents

Direct drive bicycle Download PDF

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Publication number
GB2487743A
GB2487743A GB1101761.3A GB201101761A GB2487743A GB 2487743 A GB2487743 A GB 2487743A GB 201101761 A GB201101761 A GB 201101761A GB 2487743 A GB2487743 A GB 2487743A
Authority
GB
United Kingdom
Prior art keywords
bicycle
direct drive
rear wheel
rider
drive bicycle
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
GB1101761.3A
Other versions
GB201101761D0 (en
GB2487743B (en
Inventor
Norman Chrossan
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 GB1101761.3A priority Critical patent/GB2487743B/en
Publication of GB201101761D0 publication Critical patent/GB201101761D0/en
Publication of GB2487743A publication Critical patent/GB2487743A/en
Application granted granted Critical
Publication of GB2487743B publication Critical patent/GB2487743B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J1/00—Saddles or other seats for cycles; Arrangement thereof; Component parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K3/00—Bicycles
    • B62K3/005—Recumbent-type bicycles
    • 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
    • B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
    • B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
    • B62M11/12—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with frictionally-engaging wheels
    • 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
    • B62M17/00—Transmissions characterised by use of rotary shaft, e.g. cardan shaft

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)

Abstract

A bicycle uses drive shafts 7, one each side of the bicycle, to drive friction bushes 8 engaging the rear wheel. The gear ratio may be adjusted by moving the rear wheel position against a spring 11 by means of a cable 10. The rider is strapped by seat belt 5 to the bicycle seat comprising individual pads for head 1, shoulders 2, lumbar region 3,4 and buttocks 6. A semi-recumbent position enables the whole body to be used for powering the bicycle.

Description

Page 1 Direct drive Bicycle This invention utilises friction to provide propulsion and the rider's whole body to provide power.
At present the majority of bicycles utilise various cogs and chains to provide a variable ratio gear drive system.
The rider normally sits on a high saddle and propels the vehicle utilising pedals and their own body weight.
With the exception of the recumbent this arrangement has been standard for over one hundred years.
Despite the immense numbers and popularity of bicycles in the world they all suffer from the same inherent problems, which are as follows.
(1) With the rider sifting high and straight the resulting wind resistance increases the effort required to achieve an equitable speed and therefore they must Jean forward or crouch to overcome any increase in pressure, if the rider is slight and the wind/incline severe dismounting may be the only option available.
* (2) The complexity of the gear arrangements mean that the probability of malfunction or failure of the components is very high unless alignment and maintenance are carried out frequently *:*. by qualified personnel.
In order to counter the first problem the Direct Drive Bicycle utilises an adjustable lumbar rack comprising two buttock pads, two back pads for lower and upper spine, one head pad and two shoulder pads. The rider once seated is then strapped in place by a broad abdominal quick release * safety belt. Power is transmitted utilising the whole body and wind resistance is reduced by varying * the angle of posture.
In order to negate the dangers of chain/sprocket drives the Direct Drive Bicycle uses a very simple method of propulsion. The rider powers the bicycle using a conventional arrangement of pedals incorporating a ratchet to enable idling at speed. In place of a chain drive sprocket a vertical edge toothed cog is used to drive a secondary vertical cog which in turn drives two horizontal drive shafts.
Bearing are utilised along the lengths to give the shafts rigidity and strength. At the rear wheel two friction bushes are used to engage with abrasive wheel disks. Additional stability is provided by the use of telescoped shafts slotting into the drive shafts from the rear axle bearings.
Variable gear ratio is achieved by moving the rear wheel through the arc of the radius. The top of the rear strut is hinged to the frame and control is achieved by a lever cable and spring operated by the rider.
Page 2 The following is a more detailed description with reference to related drawings.
Figure 1 Overall layout of the bicycle.
Figure 2 Rack arrangement.
Figure 3 Drive train.
Figure 4 Gear selection.
In figure 1 starting at the front, a conventional wheel (1) is utilised controlled by an extended steering shaft (2) and handlebars (3). Below this the drive mechanism comprises of, pedals (4), first (5) and second (6) cogs plus the drive shafts (7) and bushes (8) one on each side.
Above the rear wheel is the gear selection arrangement of lever (9) cable (10) and spring (11).
The riders seating rack (12) is located above the rear wheel connected by variable points to the frame.
Figure 2 shows the essential components of the rack, all of which are adjustable for differing riders' sizes. At the top are the head pad (1), shoulder pads (2), top lumbar pad (3), lower lumbar pad (4) seat belt (5) and buttock pads (6).
* Figure 3 Plan view, illustrates the drive components with pedals (1) first cog (2), second cog (3), drive shafts (4) and bushes (5).
Figure 4 covers the gear selection components, gear selector lever (1), cable (2), spring (3) and rear strut (4). ** *i * S S * S
S S St
I

Claims (3)

  1. Page 3 Claims 1. A direct drive bicycle utilising the rider's whole body to power friction bushes engaged to the adjustable rear wheel.
  2. 2. A direct drive bicycle uses a body rack to attach the rider to the bicycle.
  3. 3. A direct drive bicycle with reference to claim 1 provides infinitely variable ratios over the radius of the rear wheel.S..... * *S* .* . ** * . ** . * SS * *S S. *5 * . SS SS *SSS
GB1101761.3A 2011-02-01 2011-02-01 Direct drive bicycle Expired - Fee Related GB2487743B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1101761.3A GB2487743B (en) 2011-02-01 2011-02-01 Direct drive bicycle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1101761.3A GB2487743B (en) 2011-02-01 2011-02-01 Direct drive bicycle

Publications (3)

Publication Number Publication Date
GB201101761D0 GB201101761D0 (en) 2011-03-16
GB2487743A true GB2487743A (en) 2012-08-08
GB2487743B GB2487743B (en) 2013-03-20

Family

ID=43824967

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1101761.3A Expired - Fee Related GB2487743B (en) 2011-02-01 2011-02-01 Direct drive bicycle

Country Status (1)

Country Link
GB (1) GB2487743B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934481A (en) * 1975-01-03 1976-01-27 Foster Donald A Automatic friction drive transmission
US4447068A (en) * 1981-11-19 1984-05-08 Le Ester Brooks Bicycle drive mechanism
US5496049A (en) * 1994-04-20 1996-03-05 Escobedo; Francisco Variable drive mechanism for cycle type vehicles
US5544906A (en) * 1994-06-30 1996-08-13 Clapper; Lawrence D. (Jake) Human powered recumbent vehicle
WO2009094758A1 (en) * 2008-01-28 2009-08-06 Alexandre Belenkov Folding recumbent vehicle
WO2011078719A1 (en) * 2009-12-22 2011-06-30 Nekrasov Andrey Dmitrievich Bicycle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934481A (en) * 1975-01-03 1976-01-27 Foster Donald A Automatic friction drive transmission
US4447068A (en) * 1981-11-19 1984-05-08 Le Ester Brooks Bicycle drive mechanism
US5496049A (en) * 1994-04-20 1996-03-05 Escobedo; Francisco Variable drive mechanism for cycle type vehicles
US5544906A (en) * 1994-06-30 1996-08-13 Clapper; Lawrence D. (Jake) Human powered recumbent vehicle
WO2009094758A1 (en) * 2008-01-28 2009-08-06 Alexandre Belenkov Folding recumbent vehicle
WO2011078719A1 (en) * 2009-12-22 2011-06-30 Nekrasov Andrey Dmitrievich Bicycle

Also Published As

Publication number Publication date
GB201101761D0 (en) 2011-03-16
GB2487743B (en) 2013-03-20

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20210201