Internal-combustion engines – Cooling – Air-cooled
Patent
1990-09-11
1991-09-10
Kamen, Noah P.
Internal-combustion engines
Cooling
Air-cooled
123 417, 55400, 55437, F01P 704
Patent
active
050464582
ABSTRACT:
An air-cooled internal combustion engine having a rotating screen and a blower housing surrounding the screen. A ring is attached to the housing and positioned circumjacent the screen to define a precisely gauged radial clearance gap between the ring and the rotating screen. The ring provides a tortuous entry path for foreign matter entering through the air intake port between the ring and the screen. The ring includes a downwardly extending groove into which extends an upwardly turned lip of the rotating screen to form the tortuous path for foreign matter entering through the clearance gap between the inner periphery of the ring and the outer periphery of the main portion of the screen. Large debris and foreign matter entering through the tortuous path is chopped up into small pieces, which may then pass through the cooling fins.
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patent: 4332310 (1982-06-01), Iwai et al.
patent: 4589379 (1986-05-01), Fujikawa et al.
patent: 4838908 (1989-06-01), Bader et al.
Kamen Noah P.
Tecumseh Products Company
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