Loading dock system with biodegradable fluid
US7380305B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2005 |
| Grant date | Jun 3, 2008 |
| Priority date | — |
| Expiry date | Nov 8, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G69/2817
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A hydraulic system for operating dock levelers, vehicle restraints, and other types of loading dock equipment includes one or more features that prolong the life of the hydraulic fluid. A hydraulic reservoir with a desiccant filled breather cap or a hermetically sealed pliable reservoir minimizes the hydraulic fluid's exposure to condensation and atmospheric moisture. The system can be used for prolonging the life of both biodegradable and- non-biodegradable hydraulic fluids. In some embodiments, the system includes an acceptably biodegradable fluid having a combination of properties that makes the fluid particularly suitable for loading dock equipment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.