Telescoping linear actuator
US8220349B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 28, 2008 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Dec 17, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18672
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A telescoping actuator is described which provides a first and third segments operatively connected to a second segment. A locking system locks the first and third segment in rotation with respect to one another. Upon rotation of the second segment, the first and third segments are displaced relative to one another and the second segment. The first and third segments are operatively coupled to the second segment by corresponding sets of threads in some embodiments. The locking system may be interlocking tubes, or shafts displaced internal to the actuator. Rotational energy may be imparted to the second stage externally about its outer diameter or internally by a driveshaft operatively connected to a drive source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.