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
Photovoltaic system with integrated photovoltaic panel and battery
Stool
Color image display device, color filter substrate, color pixel array substrate, and electronic device
Vertical gate LDMOS device
Nucleotide sequence coding for variable regions of .beta. chains of human T lymphocyte receptors, corresponding peptide segments and the diagnostic and therapeutic uses
Portable, single member housing cord protector
Portable hand-held multi-function device for storing, managing and combining rewards
  Randomly Featured Patents
Compositions and methods involving an essential Staphylococcus aureus gene and its encoded protein
Drop detector system
Medical devices incorporating thermoelectric transducer and controller
Dielectric filter having increased bandwidth
Metallic pattern forming method and conductive pattern material
Fuel injection valve
Methods and data structures for improved searchable formatted documents including citation and corpus generation
Printer, control program and printing device
Low hydrogen concentration charge-trapping layer structures for non-volatile memory
Recovery mechanism and ink jet recording apparatus equipped therewith