Hydraulic ride control system for working vehicle
US7703280B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2005 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Feb 6, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F9/2207
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A hydraulic ride control system for a working vehicle such as a wheel loader is provided with boom cylinders, an actuator control valve for controlling a pressure in bottom pressure chambers of the boom cylinders, an accumulator connected to the bottom pressure chambers of the boom cylinders via a connection line, an opening control valve having a pilot chamber to selectively communicating or cutting off the connection line depending on a pressure in the pilot chamber, and a selector unit for selectively feeding a pressure to or draining a pressure from the pilot chamber. The selector unit comprises a controller for variably controlling an opening of the opening control valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.