Patent ID: 11885415
Assignee: YESIL KOMPRESOR KLIMA TASARIM IMALAT SANAYI VE TICARET LIMITED SIRKETI
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 5:
6. An automatic variator transmission for a bicycle, wherein the automatic variator transmission increases or decreases a speed of a rotational movement from a pedal, wherein
in order to increase the speed of the rotational movement, the automatic variator transmission transmits the rotational movement from the pedal when the pedal is actuated or the rotational movement from hands, to a front half-ramp pulley through a pedal drive gear, an input large gear, a front small gear and a front half pulley, wherein
due to a curve of a variator plate and an ovality of an inner surface of the front half-ramp pulley, sliding weights moving under an effect of centrifugal forces in downward ramping grooves of the front half-ramp pulley push the front half-ramp pulley in a direction of the pedal drive gear,
as a result of pushing, a belt attached to a rear surface of the front half-ramp pulley grips the front half-ramp pulley with a maximum diameter to ensure a high speed running with the front half-ramp pulley, wherein the front half-ramp pulley is pushed downwards
the belt becomes shorter due to gripping the front half-ramp pulley at the maximum diameter, pushes a rear half-pulley on a rear oval curved surface, pushing a spring upwards to tighten a spring, and grasps the rear half-pulley at a minimum diameter,

in order to decrease of the speed of the front half-ramp pulley decelerated by releasing the pedal drive gear, wherein the automatic variator transmission is applied by the pedals or by the hands, wherein
a movement of the sliding weights in a central direction of the front half-ramp pulley in the downward ramp grooves,
a movement of the front half-ramp pulley as a result of the movement of the sliding weight,
in order to reduce the speed, the belt grips the front half-ramp pulley at the minimum diameter as a result of an upward movement of the front half-ramp pulley,
pushing of the spring the rear half-pulley downwards,
the belt grips in an outward direction, a curved surface located on a bottom surface of the rear half-pulley pushed downward, grips the rear half-pulley at the maximum diameter,
a reduced speed of the belt is transmitted with the front half-ramp pulley at the minimum diameter, the rear half-pulley at the maximum diameter, to an output large gear via a rear half shaft pulley and a rear small gear.