Shovel
US10704230B2 · kind B2 · utility
1Cited by
1References
14Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 19, 2017 |
| Grant date | Jul 7, 2020 |
| Priority date | — |
| Expiry date | May 10, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F9/2292
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A shovel includes a lower traveling body, an upper rotating body, an attachment including a boom and an arm, a controller, an engine, and a hydraulic pump that is driven by the engine and discharges hydraulic oil to drive the attachment. The controller is configured to obtain a hydraulic load applied to the attachment and calculate an engine speed command at predetermined time intervals based on the obtained hydraulic load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.