Tag Archives: speed-changing

Gear speed-changing device for bicycle chain transmission

Application Number  00128663 Application Date  2000.08.05 Publication Number  1284462 Publication Date  2001.02.21 Priority Information   1999/8/6 DE 19937212.8   International Classification  B62M9/10;F16H55/30   Applicant(s) Name  SRAM Deutsche GmbH   Address     Inventor(s) Name  F. Schmit;M. Rettel;K. Wiesling   Patent Agency Code  72001 Patent Agent  yang songling AbstractA pinion-cassette with an inner-profile to fix on… Read More »

Automatic speed-changing device for bicycle

Application Number: 00122961Application Date: 2000.09.05Publication Number: 1281808Publication Date: 2001.01.31Priority Information: International: B62M11/16Applicant(s) Name: Xu GuangAddress: Inventor(s) Name: Xu GuangPatent Agency Code: 21101Patent Agent: diao peideAbstract The automatic speed changer for bicycle includes a fixed axle and chain wheel disk, brake disk, end cover, shell body with spoke holes which are assembled on the above-mentioned fixed… Read More »