Hand-guided motor driven working device
US4462158A · kind A · utility
5Cited by
5References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 6, 1982 |
| Grant date | Jul 31, 1984 |
| Priority date | — |
| Expiry date | Aug 6, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M37/0076
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A hand-guided, motor driven working device with at least one working tool, especially a portable power chain saw. The device has a venting device for the fuel tank, with the venting device comprising a flexible tube, which projects from the upper part of the tank chamber. The free end of the tube is closed except for a labyrinth-like passage or opening. The tube is arranged at least partially within a covering or sheathing, and the tube is guided to an essentially dirt- and contamination-free chamber located as far as possible from the tank, the tool, and the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.