Patent ID: 7017828

Claim:
A supplementary airplane cabin heat delivery device with an airplane with an air cooled piston engine partially enclosed by a cowling with an air inlet in said cowling; said engine including an enclosed exhaust system for allowing exhaust gases to exit said air cooled piston engine; said device comprising: at least one electrically powered blower connected to said air inlet in said cowling; said electrically powered blower having an inlet and an outlet; said blower outlet being connected to an inlet of an elongated heat shroud used for collecting heat from said aircraft engine exhaust system; wherein said outlet from said heat shroud is ducted into said airplane cabin to deliver heated air to said airplane cabin when said air cooled piston engine is in operation and said airplane is in taxiing and stationary positions; and said blower replacing ram air which is used to heat said cabin when said aircraft is in flight.