Tree-pruning and clearing apparatus
US4341017A · kind A · utility
27Cited by
6References
14Claims
0Family size
Inventor
Key dates
| Filing date | May 1, 1981 |
| Grant date | Jul 27, 1982 |
| Priority date | — |
| Expiry date | May 1, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B2075/025
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A pruning and clearing apparatus comprises a guide bar mounted on a handle. The saw chain of the guide bar is driven by means of a hydraulic motor and a separate portable drive unit comprising a hydraulic pump driven by an internal combustion engine and provided with an oil cooler. The hydraulic pump is connected to the hydraulic motor by lines arranged in the handle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.