Radio-control antenna support arm for lifting machinery
US7061438B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 22, 2003 |
| Grant date | Jun 13, 2006 |
| Priority date | — |
| Expiry date | Jan 20, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/1228
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention relates to radio-control of lifting machinery, and is intended to solve problems due to the presence of interfering metal masses. For this purpose, the support arm of the radio-control antenna is mounted such that it is able to be orientated about a vertical pivoting axis, on the lifting, machinery. This support arm includes a head, radially offset with respect to the axis, upon which the antenna is mounted. The support arm can occupy separate angular positions, and in particular a position in which the antenna is separated from the metal structure of the lifting machinery. This invention applies in particular to the radio-control of tower cranes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.