DUAL-SPEED BICYCLE WITH TWO-TEETH PLATE REAR SPROCKET WHEEL

• Main Author: TANG JINRONG
• Format: Patent
• Language: English
• Published: 16.09.1992
• Edition: 5
• Subjects: CYCLES; LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; PERFORMING OPERATIONS; POWERED PROPULSION OF SLEDGES OR; RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES; TRANSPORTING

The utility model relates to a dual-speed bicycle which is provided with a two-teeth plate dual-speed rear sprocket wheel outside which two rows of teeth with different tooth numbers are sheathed so as to satisfy the different requirements of the young persons and the persons in middle and old age for the running speed of the bicycle when the young persons and the persons in middle and old age ride the bicycle. The young persons require the fast speed of the bicycle when riding the bicycle, a chain is engaged on the teeth plate with small number of teeth for the rear sprocket wheel, and the persons in middle and old age require the slow, light, labor-saving, safe and smooth speed of the bicycle when riding the bicycle, the chain is engaged on the teeth plate with a great number of teeth for the rear sprocket wheel. The dual-speed bicycle can be assembled with a chain shifter to become a speed changing bicycle, and the dual-speed bicycle is not assembled with the chain shifter to become a speed regulating bicycle.