Planetary air motor with two internal gearings
US4076470A · kind A · utility
Inventors
Key dates
| Filing date | Sep 30, 1976 |
| Grant date | Feb 28, 1978 |
| Priority date | — |
| Expiry date | Sep 30, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01C1/102
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
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 t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.