Electrical and hydraulic control system for attachment coupling system
US7047866B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2004 |
| Grant date | May 23, 2006 |
| Priority date | — |
| Expiry date | Feb 2, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B20/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An attachment control system includes an electrical control system and hydraulic control system. The electrical control system interfaces with the hydraulic control system to ensure that attachment decoupling in response to operator electrical control can occur only when at least two different hydraulic threshold conditions are satisfied. In one example, decoupling is prevented unless the attachment is safely positioned (e.g., full curl) in response to operator manipulation of a joystick or other attachment positioning device. This can be detected, for example, when the hydraulic system has an overall operating pressure at or above a first threshold and a joystick pilot pressure at or above a second threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.