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
Hydroxylated amide skin moisturizer
Method and apparatus for visual neural stimulation
Systems and methods for documenting medical findings of a physical examination
Polar nematic compounds
High voltage circuit for electrical stimulation
Headset, terminal, and method capable of switching headset mode
Memory management configuration
  Randomly Featured Patents
Lock core panel
Drop-out management system and method
Tomato plants having higher levels of resistance to botrytis
Bounded-display-surface system for the input and output of computer data and video graphics
Surface treatment for selective metal cap applications
Vehicle wheel
Automated spray cleaning apparatus for semiconductor wafers
Apparatus for measuring light intensity of excimer lamp
CDMA receiving device and SFN detecting method used for the same
Fluid power system