Engine-driven tool

Details Engine-driven tool Engine-driven tool

2007-08-29

2009-02-10

Kamen, Noah (Department: 3741)

Internal-combustion engines

Cooling

Air-cooled

C123S184210

Reexamination Certificate

active

07487746

ABSTRACT:
A drive system for a tool, particularly a chain saw, includes a fresh air inlet and an intake manifold arranged after the fresh air inlet in the flow direction of the fresh air that opens into a carburettor. A combustion engine is provided that is arranged after the carburettor in the flow direction of an air-fuel mixture produced in the carburettor, in which the carburettor is exposed to a lower level of thermal stress. At least one heat conducting cooling vane is connected to the carburettor and protrudes outwards into direct contact with the ambient fresh air.

REFERENCES:
patent: 3477238 (1969-11-01), Race
patent: 6145484 (2000-11-01), Funakoshi et al.
patent: 20102 026 (2001-04-01), None
patent: 201 20 005 (2002-04-01), None

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