Control mechanism for use in magnetically operated wheels

A control mechanism for use in a magnetically operated wheel, comprising:

• an outer cover, an inner housing, two compression springs, two small supporting wheels, two pivotal linkage pieces, an externally connected pull cord control mount, a sensor, a signal transmitter seat and a transmission set wherein said pivotal linkage pieces are equipped with a plurality of magnets that produce various braking resistance against said magnetically operated wheel as a distance between said pivotal linkage pieces and said magnetically operated wheel is adjustably varied;
• wherein said outer cover is removably engaged with said inner housing;
• said pivotal linkage pieces are pivotally secured to said inner housing;
• said inner housing in combination with said outer cover is housed in said magnetically operated flywheel;
• a motor having a geared transmission shaft is housed in said inner housing;
• said transmission set includes a main transmission means, a minor transmission means, a linkage means, a restraint means and a driving gear;
• said geared transmission shaft of said motor is rotatably engaged with said main transmission means which is rotatably mounted onto said inner housing;
• said main transmission means is further in rotary engagement with said minor transmission means which is rotatably mounted onto said inner housing;
• said minor transmission means is in rotary engagement with said linkage means;
• said linkage means, said driving gear and said restraint means are integrally fixed together and rotatably mounted onto said inner housing;
• said pull cord control mount has a plurality of cord holes and a rack gear in engagement with said driving gear;
• and
• both said pivotal linkage pieces have at a bottom end, opposite to a top pivot point, an extended rack gear engaged with said driving gear respectively whereby said pivotal linkage pieces can be pivotally adjusted of their positions with respect to said flywheel when said motor is actuated in either direction to vary magnetic force produced by said magnets and applied to said flywheel, resulting in variation of braking resistance against said flywheel.