Vacuum cleaner and filter thereof
First Claim
1. In a vacuum cleaner comprising a reduced velocity chamber with a high velocity air inlet, an electric motor, a rotary means driven by said motor for creating a vacuum in said chamber, an outlet for exhausting air from said chamber, which air flows in a selected path from said air inlet, through said chamber and out said air exhaust outlet and a disposable porous sheet filter layer in said chamber for removing solid particles from said air, said chamber retaining particle settling out from said air, said filter layer intersecting said air path, the improvement comprising:
- a gas removing filter between said filter layer and said motor said disposable filter layer and said carbon filter layer both being generally conical in shape, said gas removing filter comprising an activated charcoal filter layer in said chamber, intersecting said air path and generally coterminous with said disposable filter layer, and means for supporting said filter layers in a nested relationship and maintaining said filter layers generally conical shape.
7 Assignments
0 Petitions
Accused Products
Abstract
In a vacuum cleaner comprising a reduced velocity chamber with a high velocity air inlet, an electric motor, a rotary means driven by the motor for creating a vacuum in the chamber, an outlet for exhausting air from the chamber, which air flows in a selected path from the air inlet, through the chamber and out the air exhaust outlet and a disposable porous sheet filter layer in the chamber for removing solids particles from the air there is provided an improvement comprising a gas removing filter between the filter layer and the motor where the gas removing filter comprises an activated charcoal filter layer in the chamber, intersecting the air path and generally coterminous with the disposable filter layer.
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Citations
35 Claims
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1. In a vacuum cleaner comprising a reduced velocity chamber with a high velocity air inlet, an electric motor, a rotary means driven by said motor for creating a vacuum in said chamber, an outlet for exhausting air from said chamber, which air flows in a selected path from said air inlet, through said chamber and out said air exhaust outlet and a disposable porous sheet filter layer in said chamber for removing solid particles from said air, said chamber retaining particle settling out from said air, said filter layer intersecting said air path, the improvement comprising:
- a gas removing filter between said filter layer and said motor said disposable filter layer and said carbon filter layer both being generally conical in shape, said gas removing filter comprising an activated charcoal filter layer in said chamber, intersecting said air path and generally coterminous with said disposable filter layer, and means for supporting said filter layers in a nested relationship and maintaining said filter layers generally conical shape.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
- 18. A gas filter for use in a vacuum cleaner having a reduced-velocity chamber with a high-velocity air inlet, an electric motor, a rotary means driven by said motor for creating a vacuum in said chamber, an outlet for exhausting air from said chamber, which air flows in a selected path from said air inlet, through said chamber and out said air exhaust outlet and a disposable porous sheet filter layer in said chamber for removing solid particles from said air, said chamber includes centrifugal means for causing said air path to flow in circular convolutions and retain particles settling out from said air, said porous sheet filter intersecting said air path, said gas filter having a conical shape and adapted to be positioned between said chamber air inlet and said electric motor and comprising an activated charcoal layer in the form of a mat impregnated with activated carbon, said impregnated mat having a thickness of less than about 1/2 inch.
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34. A method of cleaning air by use of a canister type vacuum cleaning including the steps of:
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(a) drawing air through a high velocity air inlet into a low velocity chamber; (b) centrifuging the air in the low velocity chamber to remove solid particles; (c) passing said air through a conical composite filter including a first solid particle removing filter layer and a second filter layer of activated charcoal for removing gases from said air; (d) then passing said air through a filter layer for removing solids, such as carbon particles; and
,(e) forcing said air past said motor and out an air outlet. - View Dependent Claims (35)
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Specification