Patent · US Expired

Driving device for a lawn trimmer

US6196170A · kind A · utility

5Cited by

5References

4Claims

0Family size

Assignee

DOLMAR GmbH · DE

Inventors

Andreas Singer · Werdau, DE
Torsten Haussner · Geesthacht, DE
Jochen Schoenhaar · Hamburg, DE

Key dates

Filing date	Jun 25, 1999
Grant date	Mar 6, 2001
Priority date	—
Expiry date	Jun 25, 2019

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention refers to a driving apparatus for a lawn trimmer with a two-stroke motor having an injection valve, a coupling power output, air intake and exhaust gas discharge devices and a fuel pump as well as other possible additional components. For providing a compact construction and for guaranteeing the operativeness of the motor by fuel cooling and specific air guiding, the injection valve and a cooling air fan are placed on the same side of the motor cylinder block as the output coupling with the injection valve having a nozzle jet orientation directed to the ignition plug.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.