Hydraulic drive device for construction machine
US8726648B2 · kind B2 · utility
3Cited by
2References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2011 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Nov 13, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F9/2235
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A hydraulic drive device for a construction machine includes an engine stopping unit and a discharge rate control unit. The engine stopping unit stops the engine when a predetermined state of the construction machine has continued for a predetermined period of time. The discharge rate control unit controls a discharge rate control pressure being input to the regulator, when an exhaust emission control device performs regeneration control, or performs warm-up control, and the gate lock lever is in the open position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.