Working vehicle
US5822892A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 1997 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | May 5, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F3/38
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention is a working vehicle having high visibility and transportability and is capable of providing a large excavation force over a wide range. To this end, a working unit (30) is provided with a boom (31), which is divided into a first boom (31a) and a second boom (31b), and an arm (32), which is fixed to a front end portion of the second boom (31b). The first boom (31a) is free to be swung by a first boom hydraulic cylinder (36) and the second boom (31b) is free to be swung by a second boom hydraulic cylinder (37). One end portion of a first arm link (33a) is attached to a front end portion of the second boom (31b), and one end portion of a second arm link (33b) is attached to a rear end portion of the arm (32), with one end portion of an arm hydraulic cylinder (38) and the other end portions of the first arm link (33a) and the second arm link (33b) being connected together.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.