Pneumatic vane-type motor with bearing ring for vane tips
US4120623A · kind A · utility
9Cited by
12References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 5, 1977 |
| Grant date | Oct 17, 1978 |
| Priority date | — |
| Expiry date | May 5, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01C1/348
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pneumatically operated vane-type motor for driving medical or dental handpieces. A stator housing forms a rotor chamber in which a rotor is mounted, the rotor having axial slots in which rotor vanes are radially movably mounted. The rotor rotates about an axis which is parallel to but spaced from the axis of a cylindrical inner surface of the housing which is circular in cross-section. A co-axial bearing ring is rotatably mounted in the inner surface of the housing, and the inner surface of the bearing ring is engaged by the outer ends of the vanes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.