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
Weak acid recovery system for ethanol separation processes
Method, apparatus, and manufacture for adaptation of video encoder tuning parameters
Data storage device with surface ornamentation
Method and apparatus for detection of the remote origin fraction of radon present in a measuring site
Detecting the type of NAT firewall using messages
Panel for decoration
Driving apparatus having an optical sensor and a thermal sensor for thermal and aging compensation of backlight module and driving method of backlight module
  Randomly Featured Patents
Microwave oven
Apparatus for recording information on a film
Caffeic acid derivatives and pharmaceutical compositions containing the same
Ablative RF ceramic block filters
Remote graphics rendering across a network
Weather indicating instrument
Capacitive/resistive devices, organic dielectric laminates and printed wiring boards incorporating such devices, and methods of making thereof
Network interface with transient protection apparatus for multiple ground planes
Vibrating/massage chair
Apparatus and method for determining thermophysical properties using an isochoric approach