Aktiebolaget Electrolux

Niels H Hartz

Ulf W Naslund

Goran Dahlberg

G&ouml;ran Dahlberg

Tomas O Nyqvist

Ulf N&auml;slund

Magnus Frojd

Magnus Fr&ouml;jd

A drive unit (,) for a handheld working tool, such as a chain saw, trimmer or hedge trimmer, essentially comprising a housing part (,) with a fuel tank (,) and an engine unit (,) with a fuel supply unit (,) such as a carburetor (,), a muffler (,), and a crankcase scavenged combustion engine (,) with a cylinder (,), piston (,) and crankshaft. The engine (,) has at least one inlet port (,) located in the cylinder wall (,) of the engine and/or an adjacent part of the engine crankcase (,), and the engine's inlet duct (,) from the inlet port (,) up to the fuel supply unit (,) has a length longer than 1.8 times the engine cylinder stroke (,), preferably longer than 2.0 times the cylinder stroke (,).

Drive unit

Cylinder

Motor saw

Submersible pump

Growing community of inventors

Huskvarna, Sweden

Niels H Hartz