Refrigeration – Processes – Compressing – condensing and evaporating
Reexamination Certificate
2005-06-28
2005-06-28
Doerrler, William (Department: 3744)
Refrigeration
Processes
Compressing, condensing and evaporating
C062S187000, C236S049500, C454S334000
Reexamination Certificate
active
06910340
ABSTRACT:
An airflow control device has a fixed damper element and a movable damper element. Shape memory wires are connected to the fixed damper element and the movable damper element. The shape memory wires are alternately electrified to cause the contraction thereof to move the movable damper element in opposite directions. A heater can be provided along with the damper elements to overcome frost buildup in cold environments, such as refrigeration systems.
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Caringella Anthony
Dam Robert
Nowak David R.
Ali Mohammad M.
Croll Mark W.
Doerrler William
Donovan Paul F.
Illinois Tool Works Inc.
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