Portable handheld motor-driven tool

Details Portable handheld motor-driven tool Portable handheld motor-driven tool

1989-06-21

1990-06-12

Kamen, Noah P.

Internal-combustion engines

Cooling

Air-cooled

123 4159, 123 417, F01P 700

Patent

active

049323660

ABSTRACT:
The invention is directed to handheld portable tools. An air temperature dependent cooling throttle flap controls the amount of cooling air passing over an air cooled engine. The arrangement of the throttle flap in an annular extension expels air in a manner not to annoy the operator.

REFERENCES:
patent: 3166052 (1965-01-01), Parsons
patent: 3245390 (1966-04-01), Roorda et al.
patent: 4716860 (1988-01-01), Henriksson et al.

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