Moineau type gear mechanism with resilient sleeve
US4676725A · kind A · utility
30Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 27, 1985 |
| Grant date | Jun 30, 1987 |
| Priority date | — |
| Expiry date | Dec 27, 2005 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B4/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A gear mechanism, of the Moineau type, having an outer gear member with a helical inner surface. The motor also has a helical inner gear member within the outer member. A resilient sleeve is located between the inner and outer gear members, and has helical inner and outer surfaces. The inner gear member has one less helical thread than the inner surface of the resilient sleeve. The outer surface of the resilient sleeve is similar to, but rotationally offset from, the inner surface of the resilient sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.