Inflatable column assembly for a dock leveler
US7062814B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 2002 |
| Grant date | Jun 20, 2006 |
| Priority date | — |
| Expiry date | Sep 23, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G69/2817
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A dock leveler for a truck loading dock includes a pivotal deck that is actuated by an inflatable column assembly. The inflatable column assembly includes a pliable tube that when inflated has a generally vertical cylindrical shape that can provide a heavy deck with substantial columnar support. The shape and orientation of the column assembly is such that the lengths of the pliable tube's seams are minimized. A pliable fabric sheet held in tension against the underside of the deck provides a generally flat, broad surface against which the pliable tube can push as the inflatable column assembly pushes the deck upward. A footed pallet underneath the pliable tube can be banded to the deck during shipment. After installation, the pallet can be readily lifted for cleaning the pit floor underneath the pallet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.