Self-flushing thermostat

Details Self-flushing thermostat Self-flushing thermostat

1994-12-02

1996-05-14

Kamen, Noah P.

Internal-combustion engines

Cooling

Interrelated coolant flow and throttle control

F01P 714

Patent

active

055158153

ABSTRACT:
A cooling water flow control device for a water cooled outboard motor comprising a valve seat for a thermostatic cooling water control valve that provides a wide opening for the passage of foreign matter trapped between the valve stem and seat when the cooling water passing over the valves exceeds a selected limit. The valve seat comprises an annular opening having a side wall smaller at the top than the bottom and varying in diameter. A step in the side wall provides an abrupt enlargement in the water passage through the valve for the passage of foreign matter blocking the valve.

REFERENCES:
patent: 2268083 (1941-12-01), Rapuano
patent: 4091991 (1978-05-01), Sliger
patent: 4370950 (1983-02-01), Furukubo
patent: 5337704 (1994-08-01), Roth

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