B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
B62M3/00—Construction of cranks operated by hand or foot
B—PERFORMING OPERATIONS; TRANSPORTING
B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
B62K19/00—Cycle frames
B62K19/30—Frame parts shaped to receive other cycle parts or accessories
B62K19/34—Bottom brackets
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
Chemical & Material Sciences
(AREA)
Combustion & Propulsion
(AREA)
Transportation
(AREA)
Shafts, Cranks, Connecting Bars, And Related Bearings
(AREA)