Linear actuator with dustproof mechanism
US8272286B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2008 |
| Grant date | Sep 25, 2012 |
| Priority date | — |
| Expiry date | Jun 16, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/1872
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A linear actuator with a dustproof mechanism provides reliable dustproof capability over the entire stroke of the actuator. A linear actuator 100 with a dustproof mechanism includes a ball screw, a movable stage 4 including a ball screw nut that engages the ball screw, the movable stage capable of making linear reciprocating motion in the axial direction of the ball screw in response to rotary motion of the ball screw, a housing member 2 disposed to cover at least the ball screw, openings 27, 28 formed in the housing member 2 along the path along which the movable stage 4 travels, and dustproof belts 29, 30 disposed inside the housing member 2 to block the openings 27, 28. The linear actuator 100 with a dustproof mechanism further includes end plate covers 105a, 105b that cover both ends of the housing member 2 and hence has high dustproof performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.