Battery powered vertical lift assembly
US8316994B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2008 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | Sep 28, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B9/187
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The invention is a battery powered vertical lift assembly adapted for vertically raising and lowering a load along a substantially vertical structure. The vertical lift assembly comprises a vertical guide, which is secured to the substantially vertical structure by any suitable connecting means. A carriage is movably attached to the vertical guide, and a platform, which supports the load, is attached to the carriage. The carriage is raised and lowered along the vertical guide by a suitable drive mechanism, whereby the load, supported on the platform, is raised and lowered along the vertical guide. Preferably, the drive mechanism for raising and lowering the carriage comprises a DC motor, powering a gear unit that is operatively connected to a sprocket, with the whole drive mechanism attached to the carriage. A sprocket engaging chain is attached to a surface of the vertical guide, with the chain extending the length of the vertical guide. A battery on the platform powers the DC motor. The carriage and attached platform are raised and lowered by controlled rotation of the sprocket engaged with the chain on the vertical guide. The sprocket and the whole drive mechanism attached to th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.