Insulated outboard motor housing

Claim 1

IN AN OUTBOARD MOTOR HAVING A POWER HEAD WITH A WATER-COOLED INTERNAL COMBUSTION ENGINE THEREIN: (A) A LOWER UNIT INCLUDING A HOLLOW HOUSING EXTENDING DOWNWARDLY FORM SAID POWER HEAD AND FORMING A CLOSED-BOTTOM CHAMBER, (B) MEANS FOR INTRODUCING COOLING WATER INTO SAID ENGINE AND FOR CIRCULATING SAID WATER THERETHROUGH, (C) MEANS FOR INTRODUCING COOLING WATER INTO SAID ENDOWNWARDLY INTO SAID CHAMBER TO FILL THE SAME, (D) WATER OUTLET MEANS DISPOSED IN SAID LOWER UNIT BELOW THE TOP OF SAID CHAMBER (E) OVERFLOW MEANS DISPOSED BETWEEN TOP OF SAID HOLLOW HOUSING AND SAID OUTLET MEANS, (F) PASSAGE MEANS DISPOSED IN SAID HOUSING AND CONNECTING SAID OVERFLOW MEANS WITH SAID OUTLET MEANS FOR CONDUCTING WATER WHICH HAS OVERFLOWED FROM SAID CHAMBER DOWNWARDLY TO SAID OUTLET MEANS, (G) AND AN EXHAUST PASSAGEWAY EXTENDING DOWNWARDLY FROM SAID ENGINE THROUGH SAID CHAMBER, WITH SAID PASSAGEWAY BEING SPACED FROM SAID WATER OUTLET MEANS AND FROM SAID OVERFLOW MEANS AND SAID PASSAGE MEANS.