GB2346856A - Cycle transmission system - Google Patents
Cycle transmission system Download PDFInfo
- Publication number
- GB2346856A GB2346856A GB9903826A GB9903826A GB2346856A GB 2346856 A GB2346856 A GB 2346856A GB 9903826 A GB9903826 A GB 9903826A GB 9903826 A GB9903826 A GB 9903826A GB 2346856 A GB2346856 A GB 2346856A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chainwheel
- pedal cycle
- transmission system
- cycle
- pedal
- 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- Withdrawn
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
- B62M1/00—Rider propulsion of wheeled vehicles
- B62M1/36—Rider propulsion of wheeled vehicles with rotary cranks, e.g. with pedal cranks
Landscapes
- 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)
Abstract
The system comprises a pedal crank 6 acting on a forward chainwheel 1, which is coupled by a chain to the rear wheel, via an additional transmission, e.g. a chain drive. The chainwheel 1 is located higher than the crank axis to provide increased clearance of the chainwheel. The chainwheel 1 can be interchangeable or a plurality can be provided for variable gearing ratios.
Description
CYCLE TRANSMISSION SYSTEM
THIS INVENTION RELATES TO A PEDAL CYCLE
PEDAL CYCLES ARE COMMON AND MOST HAVE A DRIVE
SYSTEM OF A SIMILAR LAYOUT. A DISADVANTAGE OF
THIS CONFIGURATION IS THE VULNERABLE POSITION OF
THE FORWARD CHAINWHEEL WHICH IS EASILY DAMAGED
WHEN RIDING OVER OBSTACLES.
AN OBJECT OF THIS INVENTION IS TO PROVIDE A CYCLE
WITH NO VULNERABLE FORWARD CHAINWHEEL, GIVE
INCREASED GROUND CLEARANCE AND ALLOW EXTRA
GEARING POSSIBILITIES.
THIS INVENTION PROVIDES A CYCLE WITH THE FORWARD
CHAINWHEEL RELOCATED TO A LESS VULNERABLE
POSITION.
A PREFERRED EMBODIMENT OF THE INVENTION WILL NOW
BE DESCRIBED WITH REFERENCE TO THE ACCOMPANYING
DRAWINGS IN WHICH:
FIG. l SHOWS A VIEW FROM THE RIGHT HAND SIDE.
FIG. 2 SHOWS A VIEW FROM THE LEFT HAND SIDE
AS SHOWN IN FIG. 1, THE CYCLE COMPRISES A FORWARD
CHAINWHEEL 1 WHICH HAS BEEN RELOCATED AWAY FROM
ITS ORIGINAL POSITION ON THE PEDAL CRANK 6.
AS SHOWN IN FIG. 2, THE MEANS OF TRANSFERRING
DRIVE FROM THE PEDAL CRANK 6 TO THE FORWARD
CHAINWHEEL 1 VIA AN ADDITIONAL TRANSMISSION
SYSTEM COMPRISING OF A LOWER CHAINWHEEL 2 AN
UPPER CHAINWHEEL 3 AND CHAIN 4. CHAINWHEELS 1
AND 3 ARE ATTACHED TO A COMMON SHAFT AND BEARING
ASSEMBLY.
Claims (4)
- CLAIMS 1. A PEDAL CYCLE WITH NO VULNERABLE FORWARD CHAINWHEEL AND INCREASED GROUND CLEARANCE.
- 2. A PEDAL CYCLE AS IN CLAIM 1 WITH INTERCHANGEABLE UPPER CHAINWHEELS OF VARYING SIZES AND A CHAIN TENSIONER TO ALLOW A SELECTION OF GEAR RATIOS.
- 3. A PEDAL CYCLE AS IN CLAIM 1 WITH TWO OR MORE FIXED UPPER CHAINWHEELS AND A DERAILLEUR SYSTEM OF KNOWN TYPE TO ALLOW THE SELECTION OF EXTRA GEAR RATIOS WHILE ON THE MOVE.
- 4. A PEDAL CYCLE SUBSTANTIALLY AS HEREIN DESCRIBED AND ILLUSTRATED IN THE ACCOMPANYING DRAWINGS.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9903826A GB2346856A (en) | 1999-02-19 | 1999-02-19 | Cycle transmission system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9903826A GB2346856A (en) | 1999-02-19 | 1999-02-19 | Cycle transmission system |
Publications (2)
Publication Number | Publication Date |
---|---|
GB9903826D0 GB9903826D0 (en) | 1999-04-14 |
GB2346856A true GB2346856A (en) | 2000-08-23 |
Family
ID=10848103
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9903826A Withdrawn GB2346856A (en) | 1999-02-19 | 1999-02-19 | Cycle transmission system |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2346856A (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB707857A (en) * | 1952-03-26 | 1954-04-21 | Zdenek Martin Burda | Improvements in or relating to the propelling mechanism of bicycles |
US4666173A (en) * | 1985-01-08 | 1987-05-19 | Graham Garnard E | Foot pedal drive for bicycles |
WO1998022333A1 (en) * | 1996-11-15 | 1998-05-28 | Hubert Mourer | Driving device for a crank gear machine |
US5810379A (en) * | 1994-07-18 | 1998-09-22 | Shusterman; G. Todd | Freewheeling drivetrain for tandem bicycles |
US5876053A (en) * | 1996-08-22 | 1999-03-02 | Ray; Rex Russell | Conveyer drive system |
-
1999
- 1999-02-19 GB GB9903826A patent/GB2346856A/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB707857A (en) * | 1952-03-26 | 1954-04-21 | Zdenek Martin Burda | Improvements in or relating to the propelling mechanism of bicycles |
US4666173A (en) * | 1985-01-08 | 1987-05-19 | Graham Garnard E | Foot pedal drive for bicycles |
US5810379A (en) * | 1994-07-18 | 1998-09-22 | Shusterman; G. Todd | Freewheeling drivetrain for tandem bicycles |
US5876053A (en) * | 1996-08-22 | 1999-03-02 | Ray; Rex Russell | Conveyer drive system |
WO1998022333A1 (en) * | 1996-11-15 | 1998-05-28 | Hubert Mourer | Driving device for a crank gear machine |
Also Published As
Publication number | Publication date |
---|---|
GB9903826D0 (en) | 1999-04-14 |
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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) |