FR1271984A - Double gear bottom bracket wheel for bicycles - Google Patents
Double gear bottom bracket wheel for bicyclesInfo
- Publication number
- FR1271984A FR1271984A FR810347A FR810347A FR1271984A FR 1271984 A FR1271984 A FR 1271984A FR 810347 A FR810347 A FR 810347A FR 810347 A FR810347 A FR 810347A FR 1271984 A FR1271984 A FR 1271984A
- Authority
- FR
- France
- Prior art keywords
- bicycles
- bottom bracket
- double gear
- gear bottom
- bracket wheel
- 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.)
- Expired
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
- B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
- B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
- B62M9/105—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like involving front sprocket chain-wheels engaged by the chain, belt or the like
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR810347A FR1271984A (en) | 1959-11-17 | 1959-11-17 | Double gear bottom bracket wheel for bicycles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR810347A FR1271984A (en) | 1959-11-17 | 1959-11-17 | Double gear bottom bracket wheel for bicycles |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1271984A true FR1271984A (en) | 1961-09-22 |
Family
ID=8721375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR810347A Expired FR1271984A (en) | 1959-11-17 | 1959-11-17 | Double gear bottom bracket wheel for bicycles |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1271984A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4594910A (en) * | 1983-07-11 | 1986-06-17 | Shimano Industrial Company Limited | Gear crank for a bicycle |
-
1959
- 1959-11-17 FR FR810347A patent/FR1271984A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4594910A (en) * | 1983-07-11 | 1986-06-17 | Shimano Industrial Company Limited | Gear crank for a bicycle |
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