Electric resistance heating devices – Heating devices – Concentrated heated air stream
Reexamination Certificate
2009-05-20
2011-11-22
Campbell, Thor (Department: 3742)
Electric resistance heating devices
Heating devices
Concentrated heated air stream
C392S360000, C392S379000
Reexamination Certificate
active
08064756
ABSTRACT:
An airflow directing structure for hand dryers includes an airflow directing case, an air inlet, an air outlet, a heating means, an air intake means and a flow directing channel. The air intake means has a rotary axle which has one end fastened to air intake blades. The flow directing channel has an air intake passage communicating with the air inlet, a tortuous passage communicating with the air intake passage and an air exit passage with one end communicating with the tortuous passage and the other end communicating with the air outlet. The air exit passage and the air intake means are parallel in a juxtaposed manner, and located on the same side with the air intake blades and the air outlet. Thus total size of the airflow directing structure is smaller and the cost is lower, and an optimal heating speed can be achieved to improve drying efficiency.
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Campbell Thor
Hokwang Industries Co., Ltd.
Muncy Geissler Olds & Lowe, PLLC
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