Working machine
US12325979B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2022 |
| Grant date | Jun 10, 2025 |
| Priority date | — |
| Expiry date | Sep 21, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/44
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In a working machine, a controller decreases a supply amount of hydraulic fluid from a travel pump to a travel motor based on a travel state of a machine body when a speed-change instruction is issued by operating a switch. When a speed-increase operation is performed, the controller switches the travel switching valve from the first state to the second state in a prior period lasting up to when the supply amount to the travel motor starts decreasing, in a restoration period in which the supply amount to the travel motor after being decreased is being restored, or in an after-restoration period in which the supply amount has been restored.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.