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 SIDECARS, FORECARS, OR THE LIKE
B62K19/00—Cycle frames
B62K19/02—Cycle frames characterised by material or cross-section of frame members
B62K19/04—Cycle frames characterised by material or cross-section of frame members the material being wholly or mainly metallic, e.g. of high elasticity