Telescoping tube assembly
US6026970A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1999 |
| Grant date | Feb 22, 2000 |
| Priority date | — |
| Expiry date | Mar 11, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18672
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A telescoping tube assembly includes a first longitudinal tube section and a second longitudinal tube section disposed within the first longitudinal tube section and adapted for telescoping motion into and out of the first longitudinal tube section. A third longitudinal tube section is disposed within the second longitudinal tube section and is adapted for telescoping motion into and out of the second longitudinal tube section. A drive motor is joined to the second longitudinal tube section to move therewith and operates a first ball-screw assembly and a second ball-screw assembly. The first ball-screw assembly is operatively connected between the first longitudinal tube section and the second longitudinal tube section. The second ball-screw assembly is operatively connected between the second longitudinal tube section and the third longitudinal tube section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.