Filter cleaning mechanisms
First Claim
1. A filter cleaning mechanism for a vacuum comprising:
- a flexible first frame supporting a first filter material, the first filter material filtering dirt particles passing therethrough, the first frame having a first end surface with teeth thereon,a second frame having ribs on an end surface,the first frame positioned inside the second frame so that the first frame teeth are adjacent the second frame ribs, wherein as the first frame is rotated with respect to the second frame, the teeth contact the ribs and the first frame is compressed and uncompressed as it rotates.
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Accused Products
Abstract
In one aspect, the present invention provides a filter cleaning mechanism comprising: a filter material (37) for filtering out dust and dirt particles from air passing therethrough; a frame (32, 34, 35, 38, 39) for supporting said filter material (37); devices (31, 296; 25a, 25b, 25c, 25d) for mechanically agitating said filter material to dislodge dust and dirt particles therefrom; wherein the devices for mechanically agitating said filter material comprises elements (31, 296; 25a, 25b, 25c, 25d) for deforming said frame within its elastic limit and elements (31, 296; 25a, 25b, 25c, 25d) for rapidly releasing said frame from said deformation to cause said frame to relax to an undeformed state. The present invention also provides a hand-holdable vacuum cleaner comprising such a filter cleaning mechanism, as well as a method of cleaning a filter assembly (30) comprising a filter material (37) and a frame (32, 34, 35, 38, 39) for supporting said filter material (37), wherein the method comprises the steps of deforming the frame within its elastic limit and rapidly releasing the frame from said deformation, thereby causing the frame to relax to an undeformed state.
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Citations
9 Claims
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1. A filter cleaning mechanism for a vacuum comprising:
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a flexible first frame supporting a first filter material, the first filter material filtering dirt particles passing therethrough, the first frame having a first end surface with teeth thereon, a second frame having ribs on an end surface, the first frame positioned inside the second frame so that the first frame teeth are adjacent the second frame ribs, wherein as the first frame is rotated with respect to the second frame, the teeth contact the ribs and the first frame is compressed and uncompressed as it rotates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification