Retractable drum fan

Details Retractable drum fan Retractable drum fan

2006-11-21

2006-11-21

Look, Edward K. (Department: 3745)

Rotary kinetic fluid motors or pumps

Method of operation

C415S126000, C415S214100, C415S220000, C417S234000, C417S423140

Reexamination Certificate

active

07137772

ABSTRACT:
A retractable drum fan in which two housing sections are telescoped to form a housing, and an impeller is disposed in the housing for forcing air through the housing. The housing sections are movable between a retracted position and an extended position.

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