EP0161790B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Disposable filter for a vacuum cleaner
Assignee: 3M Co
•
Filing: 1985-04-09
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Granted: 1990-02-28
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Expires: 2005-04-09
Abstract
No abstract record available.
Inventors
- 👤 Vincent M. C/O Minnesota Mining And Gin
- 👤 Gene E. C/O Minnesota Mining And Tharp
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 14:28
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/1607; B01D39/1623; A47L9/14; B01D2239/00; B01D2239/06; B01D2239/065
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
219 words
A disposable filter especially suited for use as a dust and debris collection device for a vacuum cleaning apparatus, said filter comprising an assembly of juxtaposed layers, characterized by said layers being as follows: (a) a first outer support layer of highly porous fabric formed of synthetic fibers, said fabric having an air permeability of at least 100 m 3 /min . m 2 and a grab strength of at least about (1.0 kg) 9.81 N; (b) an innerfilter layerformed of a web comprising randomly interentangled synthetic polymeric micro-fibers that are less than 10 microns in diameter and having a weight of about (40to 200 g/ m 2 ) 0.39 to 1.96 N/m 2 and an air permeability of about 3 to 60 m 3 /min . m 2 ; and (c) a second outer support layer of highly porous fabric formed of synthetic fibers, said second outer support layer being disposed on the opposite side of said web from said first outer support layer, said fabric of said second layer having an air permeability of at least 50 m 3 /min . m 2 and a grab strength of at least about (1.0 kg) 9.81 N, wherein said layers are disposed with said first outer support layer positioned to initially receive an air stream passing through said layers.
Claim 2
Dependent Claim
219 words
A disposable filter especially suited for use as a dust and debris collection device for a vacuum cleaning apparatus, said filter comprising an assembly of juxtaposed layers, characterized by said layers being as follows: (a) a first outer support layer of highly porous fabric formed of synthetic fibers, said fabric having an air permeability of at least 100 m 3 /min . m 2 and a grab strength of at least about (1.0 kg) 9.81 N; (b) an innerfilter layerformed of a web comprising randomly interentangled synthetic polymeric micro-fibers that are less than 10 microns in diameter and having a weight of about (40to 200 g/ m 2 ) 0.39 to 1.96 N/m 2 and an air permeability of about 3 to 60 m 3 /min . m 2 ; and (c) a second outer support layer of highly porous fabric formed of synthetic fibers, said second outer support layer being disposed on the opposite side of said web from said first outer support layer, said fabric of said second layer having an air permeability of at least 50 m 3 /min . m 2 and a grab strength of at least about (1.0 kg) 9.81 N, wherein said layers are disposed with said first outer support layer positioned to initially receive an air stream passing through said layers.
Claim 3
Dependent Claim
17 words
The disposable filter of claim 1 further characterized by a portion thereof includes a transparent flexible film.
Claim 4
Dependent Claim
41 words
The disposable filter of claim 1 further characterized by said microfiber web weighing about (70 to 140 g/m 2 ) 0.69 to 1.37 N/m 2 and having air permeability of about 8 to 20 m 3 /min · m 2 .
Claim 5
Dependent Claim
24 words
The disposable filter of claim 1 further characterized by said first and said second support layers comprising spun-bonded filament fabric of synthetic polymeric material.
Claim 6
Dependent Claim
43 words
The disposable filter of claim 1 further characterized by said and support layers being webs weighing about (15 to 25 g/m 2 ) 0.15 to 0.25 N/m 2 and having air permeability of at least 300 m 3 / min - m2 .
References Cited (Backward Citations)
No citation records indexed.
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