Patent ID: 7662035
Filing Date: 2010-02-16
Classification: F24F,Y10S

Abstract:
1. A method of operating a portable ventilation fan comprising the steps of: providing aerodynamic twisted blades attached to a fan motor in a housing, the housing having a left portion and a top portion and a right portion and a bottom portion; providing a telescoping pole with an upper pole member and a lower pole member; mounting an upper end of the upper pole member to a middle of the bottom portion of the housing; supporting a bottom end of the telescoping pole with a base member having a pair of wheels; mounting a handle on the upper pole member underneath and separate from the fan housing; moving the fan by tilting the telescoping pole with the portable fan housing onto the wheels by pulling back on the handle; adjusting height of the fan housing with the telescoping pole by sliding the upper pole member and the lower pole member relative to one another; providing a handtruck with a lower front extending ledge and upright vertical supports; providing a fixed handle attached directly to the vertical supports of the handtruck, the fixed handle protruding rearwardly at a fixed tilted angle relative to the upright vertical supports; attaching, a photovoltaic panel onto the fixed handle, so that the photovoltaic panel is supported at a fixed angle on the handtruck; supporting a battery on the lower ledge of the handtruck and attaching the battery to the photovoltaic panel; charging the battery by solar energy through the photovoltaic panel; running the motor in the portable fan housing by electrical power through an electrical cord attached to both the battery and the portable fan motor; rotating the aerodynamic twisted blades by the running motor.