Drive assembly for rotating and translating a shaft
US7390185B2 · kind B2 · utility
1Cited by
15References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2007 |
| Grant date | Jun 24, 2008 |
| Priority date | — |
| Expiry date | Jul 23, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2201/18
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a drive unit operable to translate and rotate a shaft, the drive unit including: (i) a hollow electric motor having a rotor, (ii) a fluid cylinder, (iii) means for connecting the shaft to the rotor of the hollow electric motor, (iv) means permitting the shaft to move lengthwise coupled with the fluid cylinder, and (iv) means connecting the fluid cylinder to the shaft, whereby the shaft may be rotated by the hollow electric motor and moved lengthwise by the fluid cylinder, and wherein the fluid cylinder has an outer wall coupled with the rotor of the hollow electric motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.