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Mikhail Danilovich Sur

Daniil A Dudko

A planetary air motor with two internal gearings employing two internally toothed ring gears. One ring gear rotates and meshes with a first rim of a two-rim pinion, the other gear forms an intertooth space with a second rim of the pinion that is freely mounted on an eccentric journal of a pinion carrier and has radial through slots in the tooth spaces. The intertooth space is limited by a flange at one face and by a fixed washer at the other face of the fixed gear and is divided into two intertooth working zones A and B. Zone A communicates with the compressed air line and the other one (B) with the atmosphere. The pinion carrier has a main channel and an additional channel with an inside bore that is smaller than that of the main channel and which is isolated from the latter. The additional channel is disposed towards the periphery of an eccentric journal of the pinion carrier and communicates with the compressed air line and the intertooth working zone A through a slot in the pinion carrier. The slot is where the fixed ring gear meshes with the pinion rim and is tangential to the cross section of the additional longitudinal channel. The main channel communicates with atmosphere through side holes in the pinion carrier, and zone B through a side port located in the zone where the fixed ring gear meshes with the other rim of the pinion.

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Kyiv, Ukraine

Mikhail Danilovich Sur