Portable tower with improved guiding and lifting systems
US8955264B2 · kind B2 · utility
10Cited by
29References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 1, 2013 |
| Grant date | Feb 17, 2015 |
| Priority date | — |
| Expiry date | May 1, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04H12/34
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus includes a portable tower having multiple sections including a base section and at least two slidable sections. The sections form a nested telescopic structure where each of the slidable sections is configured to move within another of the sections. The tower can also include a lifting system configured to extend the at least two slidable sections substantially simultaneously. Each section of the tower may also include multiple rollers configured to roll against at least one adjacent section of the tower.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.