Working tool unit of construction machine
US5584643A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1995 |
| Grant date | Dec 17, 1996 |
| Priority date | — |
| Expiry date | Mar 30, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F3/32
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A working tool unit of a construction machine, which excels in transportability and is capable of smoothly carrying out diversified types of work in a wide range, is disclosed. Therefore, the working tool unit according to the present invention includes: a first boom (31a) rockably mounted on a turning frame of a vehicle body; a second boom (3b) mounted to be rockable on the first boom; an arm (32) mounted to be rockable on the second boom; a working tool such as a bucket (33) mounted on said arm; a first boom cylinder (35) mounted on the turning frame (21) and the second boom to rock the second boom; a second boom cylinder (36) mounted on the second boom and the first boom to rock the second boom; and an arm cylinder (37) mounted on the second boom and the arm to rock the arm. The working tool unit is adapted to switch over its position from an attitude for storage to an attitude for working by rocking the first boom (31a) with extension and contraction of the first boom cylinder (35) and the second boom cylinder (36).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.