Forest machine with crane
US4881865A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 7, 1988 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | Apr 7, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01G23/003
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A forest machine with a crane comprises a driver's cab (2) which is mounted on a wheeled chassis (1) and behind which a load carrier (3) is placed, and a crane post (10) mounted in association with the cab and rotatable relative to the chassis and carrying an outer boom (11) having a telescopic boom (16) which is arranged at its free end to carry a working tool (21). The crane post (10) comprises two suitably inclined, spaced-apart support arms (12) between which extends a pivot shaft (13) on which the outer boom is mounted in a position between the support arms. The pivot shaft (13) is located at a distance from the center of rotation of the post (10) exceeding half the distance between a pair of wheels carrying the chassis of the machine. The outer boom is movable through at least 90.degree. between a horizontal and a vertical position, more precisely by means of a hydraulic cylinder (19).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.