Continuous chain gear; has variable guide gears with continuously variable effective radii, one inside chain and one outside chain, where chain is toothed link-wise to engage teeth in outer gear

摘要

The chain gear has variable guide gears (R1(a),R2(a)) with continuously variable effective radii (r1(a),r2(a)). The variable guide gears are formed as bevel gears or as gears with radially adjustable segments, with a unit to continuously adjust the transfer ratio of the variable gears and constructive elements to guide and tension the chain (11). The chain is toothed link-wise, that is links are offset through 90 deg as the chain loops a curved surface, so that a determined stable flaring of the tooth ends meets the offset part. The force transfer and transfer ratio is achieved with a combined pair of radially-variable gears. One variable gear (R1(a)), fits inside the chain, radially supports the chain and maintains the offset angle of the chain links. The other variable gear (R2(a)) is toothed or grooved, fits outside the chain and is permanently positively engages the teeth of the chain. Adjustment components and control parts are provided, to adjust the effective radii of the variable gears and maintain the tooth spacings of the chain and the second gear.