Solar-powered waste compactor, method of powering a waste compactor, and hydraulic unit therefor
US7819054B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2007 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Aug 8, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/10
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A hydraulic power device usable to power a compactor ram of a waste compactor is provided. The hydraulic power device includes a pump assembly having first and second pumps for providing pressurized hydraulic fluid to at least one hydraulic cylinder and piston assembly associated with the compactor ram. A battery is provided for storing energy and for providing energy to the pump assembly. A solar panel converts solar energy and charges the battery. A pump control unit simultaneously operates the pumps when an operating pressure of the pump assembly is less than a predetermined threshold and operates only the first pump when the operating pressure of the pump assembly is greater than the predetermined threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.