GB2317659A - 50-Speed bicycle gearing - Google Patents

50-Speed bicycle gearing Download PDF

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Publication number
GB2317659A
GB2317659A GB9715957A GB9715957A GB2317659A GB 2317659 A GB2317659 A GB 2317659A GB 9715957 A GB9715957 A GB 9715957A GB 9715957 A GB9715957 A GB 9715957A GB 2317659 A GB2317659 A GB 2317659A
Authority
GB
United Kingdom
Prior art keywords
bicycle
chain
frame
normal position
axle
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Withdrawn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
GB9715957A
Other versions
GB9715957D0 (en
Inventor
Ashraf Mahfouz Abbas
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
Priority claimed from GB9620124A external-priority patent/GB2317657B/en
Application filed by Individual filed Critical Individual
Priority to GB9715957A priority Critical patent/GB2317659A/en
Publication of GB9715957D0 publication Critical patent/GB9715957D0/en
Publication of GB2317659A publication Critical patent/GB2317659A/en
Withdrawn legal-status Critical Current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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

The bicycle has a chainwheel 11 with two alternative sprockets connected by a chain 19 to a selected one of five sprockets on an intermediate sprocket assembly 14. A further sprocket of this assembly, on the opposite side of the bicycle frame, is connected by a further chain to a selected one of a rear group of five sprockets 17 coaxial with the rear wheel.

Description

Bike Ashraf 50 Technical field This invention relates to a bike.
Background It is well known that the more there is an increase in the number of teethes of the chain rings of the pedal (crankset) and decrease in the teethes ofthe Cassette at the rear wheel, the more the speed increases. Also there is a crucial factor which is the crank arm length.
Essential Technical features According to the present invention, the rider can use only 45 percent of his energy to ride a distance which usually requires 100 percent ofthe rider's energy. At the same time, with the new bike, the rider has more ability to increase the speed by using the 55 percent of his unused energy.
The following is an example of a bike of a number of Speeds which has been made to decrease the energy being used by the rider and increase the speed according to the parts which been used.
Example Specific embodiment of the invention will now be described by way example with reference to the accompanying drawing in which: Figures 1, 5 and 13 show the bike Figures 3, 8 and 11 show the first set of chain rings Figures 4, 9 and 12 show the second set of chain rings Figures 2, 10 and 14 show the frame In this example the following parts have been used: No: 11 consists of one chain ring which contains 16 teethes as shown in figure 11 No: 14 consists of one chain ring which contains 8 teethes as shown in figure 12 , No: 16 consists of any number of chain ring with any number of teethes No: 7 consists of cassette (Free wheel) No: 19 and 20 chain In this example, when the crank arm of 17,5 cm with ring of 16 teethes are used, the active crank arm length will be 17,5 cm - 6,4 cm = 11,1 cm. Ifwe compare this active crank arm length to another conventional bike with chain rings 52 teethes and the same crank arm of 17,5 cm, then the active crank arm length will be 17,5 - 10,4 cm = 7,1 cm.
This means that in the first example we need less energy to ride the bike than the second example. Only 64 percent of the energy is used with the new invention.
At the same time, if the rotation of the pedal takes place one time, the 14 rotates twice as well as 16. This means that if 11 rotates once, 16 rotates twice.

Claims (5)

1 A bicycle with two integral set of chain rings, one set on each side of the frame of the bicycle. Each set consists of any number of rings and number of teethes for the purpose of performing a rotation movement. The motion of one set on one side of the bicycle frame operates simultaneously with the corresponding set of chain rings.
The two sets, where a chain ring set on one side of the frame is connected with the other chain ring set by the axle bearing and all are located above the axle that is the normal position with a crankset of the bicycle. The first set is connected by chain with the crankset that is in the normal position on one side of the frame. The second set which is in the other side of the flame is connected by chain with the cassetteXfreewheel which in the normal position at the rear wheel. The speed is controlled by adjusting the gear mechanism.
2 A bicycle as in claim 1, wherein it can be used in any kind or size of bicycle and also with any type of frame of bicycle.
3 A bicycle as in claim 1 or claim 2, wherein can be positioned the two integral set of chain rings with the axle which over the axle that in the normal position alternative the ABC or BCD triangles as shown in Figure 2, 10 and 14 or any position in order to perform the same function.
4 A bicycle as in claim 1 or claim 2 or claim 3 wherein can use two stage gear mechanism. The first gear with the first set which is connected by chain with the crankest that is in the normal position on one side of the frame as shown in Figure 1, 3 and 4. The second gear with the Cassette/freewheel which in the normal position at the rear wheel which is connected with the second set of the chain rings on the other side.
5 A bicycle substantially as described herein with reference to figures 1
12 of the accompanying drawing.
5 A bicycle substantially as described herein with reference to Figures t - 14 of the accompanying drawing.
Amendments to the claims have been filed as follows
1 A bicycle with two integral set of chainrings, one set on each side of the frame of the bicycle.
Teach set consists of any number of rings and any number of teeth for the purpose of performing a rotation movement.
The motion of one set on one side of the bicycle frame operates simultaneously with the corresponding set of chaunigs.
The two sets, where a chainring set on one side of the frame is connected with the other chainring set by the aSe bearding and all are located above the awle that is in the normal position with a rankest of the bicycle.
the first set is connected by chain with the crankset that is in the normal position on one side of the frame.
The second set which is in the other side of the frame is connected by chain with the cassette/freewheel which in the normal position at the rear wheel.
the speed is controlled by adjusting the gear mechanism.
2 A bicycle as in claim 1, wherein it can used in any kind or size of bicycle and also with any type of frarne of bicycle.
a3 A bicycle as in claim I or claim 2 wherein can positioned the ttt-o integral set of chaillrings with the axle which over the axle that in the normal position alternative the ABC or BCD triangles as shown in figure 2 and 10 or any position in order to perform the same function.
4 A Bicycle as in claim 1 or claim 2 or claim 3 wherein can use two stage mechanism, the first gear with the first set which is connected by chain with the crankiest that is in the normal position on one side of the frame as shout in figure 1,3 and 4.
And the second gear with the CassetteXfieewheel which in the normal position at the rear wheel which is connected with the second set of the chainmgs on the other side.
GB9715957A 1996-09-26 1997-07-29 50-Speed bicycle gearing Withdrawn GB2317659A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9715957A GB2317659A (en) 1996-09-26 1997-07-29 50-Speed bicycle gearing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9620124A GB2317657B (en) 1996-09-26 1996-09-26 Two-stage bicycle speed change mechanism
GB9715957A GB2317659A (en) 1996-09-26 1997-07-29 50-Speed bicycle gearing

Publications (2)

Publication Number Publication Date
GB9715957D0 GB9715957D0 (en) 1997-10-01
GB2317659A true GB2317659A (en) 1998-04-01

Family

ID=26310111

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9715957A Withdrawn GB2317659A (en) 1996-09-26 1997-07-29 50-Speed bicycle gearing

Country Status (1)

Country Link
GB (1) GB2317659A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2795382A1 (en) * 1999-06-25 2000-12-29 Yvan Pesenti Multiple ratio chain transmission system, for bicycles, has two parallel, separate and complete transmission systems, with change mechanism acting on driven pinions only.
CN105984553A (en) * 2015-01-29 2016-10-05 杨小全 Internal gear power-enhancing speed regulator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2160272A (en) * 1984-06-14 1985-12-18 George Hilbert Parkinson A 100 speed drive system for bicycles
US4842569A (en) * 1987-11-16 1989-06-27 Recreational Accessoried Corporation Bicycle transmission having infinitely variable drive ratio
US4976348A (en) * 1989-05-26 1990-12-11 Berry Harry E Coaster brake bicycle and changeable speed gear attachment therefore
WO1992010394A1 (en) * 1990-12-07 1992-06-25 Boland Gerard Integral intermediate chain wheels for bicylces

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2160272A (en) * 1984-06-14 1985-12-18 George Hilbert Parkinson A 100 speed drive system for bicycles
US4842569A (en) * 1987-11-16 1989-06-27 Recreational Accessoried Corporation Bicycle transmission having infinitely variable drive ratio
US4976348A (en) * 1989-05-26 1990-12-11 Berry Harry E Coaster brake bicycle and changeable speed gear attachment therefore
WO1992010394A1 (en) * 1990-12-07 1992-06-25 Boland Gerard Integral intermediate chain wheels for bicylces

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2795382A1 (en) * 1999-06-25 2000-12-29 Yvan Pesenti Multiple ratio chain transmission system, for bicycles, has two parallel, separate and complete transmission systems, with change mechanism acting on driven pinions only.
WO2001000375A3 (en) * 1999-06-25 2001-03-29 Yvan Pesenti Multiple speed transmission chain with great gear ratio variation
CN105984553A (en) * 2015-01-29 2016-10-05 杨小全 Internal gear power-enhancing speed regulator

Also Published As

Publication number Publication date
GB9715957D0 (en) 1997-10-01

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Legal Events

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