Actuator for valve lift controller
US7475662B2 · kind B2 · utility
1Cited by
4References
11Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 26, 2006 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | Feb 16, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2820/032
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A feed screw mechanism including a screwed shaft which moves linearly along with the control shaft, and a rotation spindle which rotates in a circumferential direction. The feed screw mechanism converts a rotational movement of the rotation spindle into a linear movement of the screwed shaft. A protrusion protrudes outwardly from the rotation spindle. An internal thread member engages with an outer wall surface of the rotation spindle. A motor stator generating a magnetic is positioned over the rotation spindle, and is sandwiched between the protrusion and the internal thread member in an axial direction of the rotation spindle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.