Bored? Check out the possible new tech coming down the pipe by reviewing recent patents. :dizzy:
Shimano
http://www.faqs.org/patents/assignee/shimano-inc/
Specialized
http://www.faqs.org/patents/assignee/specialized-bicycle-components-inc/
Sram:
http://www.faqs.org/patents/assignee/sram-llc/
http://www.faqs.org/patents/assignee/sram-deutschland-gmbh/