Filter system
First Claim
1. In a vacuum cleaner or air 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, said air flows in a selected path from said air inlet, through said chamber and out said air exhaust outlet, the improvement comprising:
- filter means positioned between said air inlet and said motor for removing particles in said air, said filter means including at least one layer of electrically charged fiber material substantially encapsulated between at least two layers of support material, said layer of electrically charged fiber material and said at least two layers of support material connected together by at least one melted seam positioned substantially at the peripheral edge along the entire periphery of said filter means, said melted seam forming a substantially airtight barrier between said filter means layers.
7 Assignments
0 Petitions
Accused Products
Abstract
A vacuum cleaner having a reduced velocity chamber with a high velocity air inlet, an electric motor, a rotary mechanism 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. The vacuum cleaner also has a fiber filter between the filter layer and the motor where the fiber filter has an electrically charged non-woven material for removing very fine air particles in the chamber, intersecting the air path and generally coterminous with the disposable filter layer.
132 Citations
64 Claims
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1. In a vacuum cleaner or air 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, said air flows in a selected path from said air inlet, through said chamber and out said air exhaust outlet, the improvement comprising:
- filter means positioned between said air inlet and said motor for removing particles in said air, said filter means including at least one layer of electrically charged fiber material substantially encapsulated between at least two layers of support material, said layer of electrically charged fiber material and said at least two layers of support material connected together by at least one melted seam positioned substantially at the peripheral edge along the entire periphery of said filter means, said melted seam forming a substantially airtight barrier between said filter means layers.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. In a vacuum cleaner or air 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, said air flows in a selected path from said air inlet, through said chamber and out said air exhaust outlet, the improvement comprising:
- filter means positioned between said air inlet and said motor for removing particles in said air, said filter means including at least two layers of electrically charged fiber material substantially encapsulated between at least two layers of support material at least one layer of support material disposed between two layers of electrically charged fiber material and a melted edge seam positioned substantially at the peripheral edge along the entire periphery of said filter means said melted edge connecting together said layers of electrically charged fiber material and said layers of support material and forming a substantially airtight barrier between said filter means layers.
- View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
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55. In a vacuum cleaner or air cleaner comprising a chamber with an air inlet for receiving air, means for creating a vacuum in said chamber, an air outlet for exhausting air from said chamber, said air flowing in a selected path from said air inlet, through said chamber and out said air exhaust outlet, the improvement comprising:
- a filter means positioned between said air inlet and air outlet for removing particles in the air, said filter means substantially conical in shape and including at least one layer of electrically charged fiber material substantially encapsulated between at least two layers of support material, each layer of said electrically charged fiber material including non-woven polypropylene fibers and having a weight of 60-150 gm/m2 and an ASHRAE 51.1;
Initial Atmospheric Dust Spot Efficiency at 40 ft/min of at least about 80, said support material including substantially non-electrically charged fibers and including a material selected from the group consisting of polyester, cotton, nylon and mixtures thereof, and said layers of said electrically charged fiber material and said support material connected together by at least one melted seam. - View Dependent Claims (56, 57, 58, 59, 60, 61, 62, 63, 64)
- a filter means positioned between said air inlet and air outlet for removing particles in the air, said filter means substantially conical in shape and including at least one layer of electrically charged fiber material substantially encapsulated between at least two layers of support material, each layer of said electrically charged fiber material including non-woven polypropylene fibers and having a weight of 60-150 gm/m2 and an ASHRAE 51.1;
Specification