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
Systems and methods for authorizing, authenticating and accounting users having transparent computer access to a network using a gateway device
Stabilization of dicarbonate diesters with protonic acids
Image forming apparatus
Measurement protocol for a medical technology apparatus
Storage system, control method therefor, and program
Transferring storage devices within storage device testing systems
Method and system to generate finite state grammars using sample phrases
  Randomly Featured Patents
Method and apparatus for fully integrating a voltage controlled oscillator on an integrated circuit
Longitudinal seat sliding apparatus for automobiles
Television set
Process for carrying out multi-phase reactions according to the counter current principle of a liquid and gaseous phase and apparatus for carrying out the process
Phase-locked loop based controller for adjusting an adaptive continuous-time filter
UPnP AV demux
Aerofoil having a plurality cooling air flows
Optical probes and probe systems for monitoring fluid flow in a well
Etchant and method of use
Five-Helix protein