Internal-combustion engines – Cooling – Automatic coolant flow control
Reexamination Certificate
2006-11-22
2009-02-17
Cronin, Stephen K (Department: 3747)
Internal-combustion engines
Cooling
Automatic coolant flow control
C236S034500
Reexamination Certificate
active
07490581
ABSTRACT:
A thermostat for an internal combustion engine. The thermostat includes a tube type bypass valve member; a spring to keep said valve member in a closed position and a temperature sensitive actuator to move said valve member to an open position. A flow control element is provided to control a flow of fluid past said valve member as said valve member opens to prevent a sudden cooling of the engine after the engine has already reached an initial warm condition. In one embodiment a safety catch is also provided to prevent the valve from closing even if an over-temperature event damages it.
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Ali Hyder
Cronin Stephen K
Hoffmann & Baron , LLP
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