IP Library Granted Patent US 7,971,857
Granted Patent B1
US 7,971,857 · App. 11/899,442 · Granted Jul 5, 2011

Filter/fan system

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Quick Facts
Patent No.
US 7,971,857
App. No.
11/899,442
Granted
Jul 5, 2011
Kind
B1
Abstract

An upper and a lower panel with side panels therebetween define a rectilineal chamber of a housing having an air input and an air output side. A fan includes a plurality of blades and a motor to rotate the blades within the chamber. A filter assembly includes a bracket adjustably secured on each side panel and a filter component positioned in facing contact with the housing whereby all air passing through the housing passes through the filter component.

Claims (11)

1. A filter/fan system comprising:

a housing having an upper and a lower panel with side panels there between to define a rectilineal chamber between the panels, the housing having an air input and an air output side;

a fan including a plurality of blades and a motor to rotate the blades within the chamber;

a filter assembly including a bracket adjustably secured on each side panel and a filter component positioned in facing contact with the housing whereby all air passing through the housing passes through the filter component; and

a humidifying assembly including a tray with an intermediate section movable between a retracted orientation for storage and an extended orientation for humidifying, the humidifying assembly also including a container with a quantity of water positioned on the tray with an open top located at an elevation beneath the midpoint of the front face for adding moisture to air passing through the filter and the chamber.

2. A filter/fan system for extracting undesirable material from air drawn through an appropriate filter and then across a humidifier in a safe and convenient and economical manner comprising, in combination:

a housing having a horizontal generally planar upper panel and a horizontal generally planar lower panel with vertical generally planar side panels between the upper and lower panels to define a rectilineal chamber between the panels, the housing having an air input side with an input screen and an air output side with an output screen, the screens adapted to abate an accident by a hand inadvertently entering the chamber;

a fan including a plurality of blades and a motor centrally supported at the input side of the housing to rotate the blades within the chamber about a vertical axis and with an electrical line to couple the motor to a source of electrical potential;

electrical controls located on the upper panel including a first dial to vary the operation of the motor between an OFF orientation and SLOW and MEDIUM and FAST orientations at the discretion of a user to vary the rate of air to flow through the housing, the electrical controls also including a second dial to vary time of operation of the motor between an OFF orientation and SHORT and MEDIUM and LONG time period orientations at the discretion of a user to vary the duration of air to flow through the housing, the upper panel also including a centrally located handle between the first and second dial for transporting purposes;

a filter assembly including an L-shaped bracket adjustably secured on each side panel, each bracket including a long side with a horizontal slot and a bolt extending through a side panel and through a slot with a terminal wing nut securing the bracket in a proper orientation with respect to the housing, each bracket including a short side spaced from the side panels, the filter assembly also including a filter component in a rectilinear configuration with an interior face positioned in facing contact with the input face of the housing and an exterior face in contact with the short side of the bracket whereby all air passing through the housing passes through the filter component, the housing also having spaced supports secured to the lower panel and extending forwardly beneath the filter for the vertical positioning of the filter, the filter components being selected from the class of filters for removing pollen dust, mold spores, smoke and smog, the slot being of a length whereby the brackets are positionable in a short position for holding a single filter component and a long position for holding a plurality of filter components; and

a humidifying assembly including a retractable tray having an interior section positionable beneath the lower panel and above the supports and an exterior section spaced rearwardly from the output face with an intermediate section movable between a retracted orientation for storage and an extended orientation for humidifying, the humidifying assembly also including a container with a quantity of water positioned on the tray with an open top located at an elevation beneath the midpoint of the front face for adding moisture to air passing through the filter and the chamber.