Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Derailleur for a bicycle










Image Number 2 for United States Patent #4406643.

A derailleur for a bicycle, which is so constructed that a movable member is supported to a base member through two linkage members, a changeover frame having two pulleys carrying thereon a driving chain is pivoted to the movable member, and a tension spring is interposed between the movable member and the changeover frame, so that the tension spring exerts tension on the driving chain, said changeover frame being subjected to resistance against its swinging motion in a direction opposite to the working direction of the tension spring, thereby swinging the changeover frame easily in the direction of working of the changeover frame, while, requiring more force in the reverse direction to the working thereof, thereby making swinging of the changeover frame in the working direction of the tension spring easy and more difficult in the swinging motion direction opposite to the working direction of the spring.








 
 
  Recently Added Patents
Digital-to-analog converter and performing method thereof
Automatic image-content based adjustment of printer printing procedures
Case for a tablet computer
Vehicle-mounted camera stabilized passively by vibration isolators
Composite filtration membranes and methods of preparation thereof
Portable stand
Magnetic reading and writing device
  Randomly Featured Patents
Beverage server
Electrode configuration for LiMCA
Pneumatically actuated multiple store launcher
Process for modifying fats and oils
Method of printing variable image requirements
Method and system for engine control
Method and pulp washing machine for washing of pulp or any corresponding material
Wellbore tool with hall effect coupling
Test closure plug for the trap bushing of a conventional T-fitting
Apparatus and method for intermittent application of stretchable web to target web