Power mast
US5557892A · kind A · utility
36Cited by
9References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 8, 1994 |
| Grant date | Sep 24, 1996 |
| Priority date | — |
| Expiry date | Mar 8, 2014 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04H12/182
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A power mast for the automatic vertical elevation and retraction of various devices, such as an antenna mounted on a communications vehicle. The mast is cable-driven, having a plurality of individual telescoping sections which allow for an overall collapsed height the same as or only slightly higher than the tallest such individual section. The cable is threaded around a series of pulleys, and is driven by a motor. Constant tension is maintained in the system, so that when in its operating or "up" position, the device is held in a stable condition until retracted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.