Portable handheld motor tool having a one-piece fan housing

Details Portable handheld motor tool having a one-piece fan housing Portable handheld motor tool having a one-piece fan housing

1990-03-15

1990-11-20

Kamen, Noah P.

Internal-combustion engines

Cooling

With jacketed head and/or cylinder

123 4165, F01P 102

Patent

active

049709933

ABSTRACT:
The invention relates air-cooled combustion engine powered handheld tool. A fan screen has radial struts and tranverse walls which together define windows. The effective intake suction area of the fan is less than the area of the screen. Wood chips and the like are kept out by the size of the windows and the reduced air flow velocity through the screen.

REFERENCES:
patent: 3120840 (1964-02-01), Hatz
patent: 4261302 (1981-04-01), Sheldon
patent: 4573544 (1986-03-01), Hoch et al.

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