Hydraulic control device for loader
US7549241B2 · kind B2 · utility
8Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2006 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Feb 11, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F9/2271
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An arm direction changeover valve (11) is provided in an arm block (20). A first pilot check valve (18) is provided in a first block (21). A second pilot check valve (19) is provided in a second block (22). The three blocks, i.e., the arm block (20), the first block (21), and the second block (22) are arranged side by side. The first block (21) and the second block (22) are arranged to be contiguous to each other. Accordingly, an increase in size can be prevented even if a float mechanism and a multi-direction changeover valve are formed integrally with each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.