Electric resistance heating devices – Heating devices – Concentrated heated air stream
Patent
1996-04-24
1997-09-23
Hoang, Tu B.
Electric resistance heating devices
Heating devices
Concentrated heated air stream
392367, 392379, 392383, 34 96, A45D 2010
Patent
active
056713215
ABSTRACT:
A heat gun quickly and efficiently dries joint compound. The heat gun includes an outer shroud defining an airflow chamber and a fan which drives airflow therethrough. A motor provides drive to the fan while a plurality of heating coils disposed within the airflow chamber heat the airflow between 1200 and 1700 .degree. Fahrenheit. A fan-shaped attachment is attached about an endcap of the heat gun. The fan-shaped attachment extends into a pair of sidewall surfaces terminating in an elongated port. The elongated port is preferably between 1/2 and 3 inches in diameter and between 8 and 12 inches in length. The endcap of the heat gun is between 1 and 3 inches in diameter. A plurality of ribs connect the pair of sidewall surfaces and extend longitudinally from the endcap of the heat gun to the elongated port of the fan-shaped attachment to define a plurality of longitudinal air passages which evenly distribute airflow along the fan-shaped attachment. Each of a portion of the ribs includes an air stop at an end proximal to the endcap such that air flow is restricted along a portion of the air passages to promote even airflow distribution.
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