US6840975B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grease filter
Assignee: Component Hardware Group Inc
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Filing: 2003-03-14
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Granted: 2005-01-11
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Expires: 2023-03-14
Abstract
Abstract The grease filter is made with components that are secured together about the periphery of the filter by a seam with smooth surfaces. In one embodiment, the filter is constructed of three components, namely, a pair of plates and a rectagular or square frame. The peripheral edges of the plates and frame are interfolded on each other to form a rolled seam. The resulting structure is rigid and does not twist.
Inventors
- 👤 Richard Bohacik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:15
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/20; F24C15/2035; B; B01; B01D; B01D45/00; B01D45/04; B01D45/08; Y; Y10; Y10S; Y10S55/00; Y10S55/05; Y10S55/36; Y10T; Y10T29/00; Y10T29/49; Y10T29/496; Y10T29/49604
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
62 words
In a grease filter, the combination comprising a plate having a plurality of pairs of spaced apart inwardly directed louvers defining a plurality of parallel passages for a flow of air and vapor therethrough; and a frame disposed peripherally of said plate, said frame having an upper peripheral edge interfolded with a peripheral edge of said plate to define a seam thereat.
Claim 2
Dependent Claim
62 words
In a grease filter, the combination comprising a plate having a plurality of pairs of spaced apart inwardly directed louvers defining a plurality of parallel passages for a flow of air and vapor therethrough; and a frame disposed peripherally of said plate, said frame having an upper peripheral edge interfolded with a peripheral edge of said plate to define a seam thereat.
Claim 3
Dependent Claim
28 words
The combination as set forth in claim 1 wherein said frame has a plurality of apertures in at least one side thereof for passage of accumulated grease therethrough.
Claim 4
Dependent Claim
15 words
The combination as set forth in claim 1 wherein said plate is of rectangular shape.
Claim 5
Dependent Claim
20 words
The combination as set forth in claim 1 wherein each of said plate and said frame has a radiused corner.
Claim 6
Dependent Claim
36 words
The combination as set forth in claim 1 wherein said frame has a plurality of pairs of spaced apart inwardly directed louvers defining a plurality of parallel passages for a flow of air and vapor therethrough.
Claim 7
Dependent Claim
23 words
The combination as set forth in claim 5 wherein said passages in said frame are staggered relative to said passages in said plate.
Claim 8
Dependent Claim
83 words
A grease filter comprising a front plate having a plurality of spaced apart parallel passages therein; a back plate having a plurality of spaced apart parallel passages therein; a rectangular frame disposed between and peripherally of said front plate and said back plate, said frame having an upper peripheral edge interfolded with a peripheral edge of said front plate to define a seam thereat and a lower peripheral edge interfolded with a peripheral edge of said back plate to define a seam thereat.
Claim 9
Dependent Claim
83 words
A grease filter comprising a front plate having a plurality of spaced apart parallel passages therein; a back plate having a plurality of spaced apart parallel passages therein; a rectangular frame disposed between and peripherally of said front plate and said back plate, said frame having an upper peripheral edge interfolded with a peripheral edge of said front plate to define a seam thereat and a lower peripheral edge interfolded with a peripheral edge of said back plate to define a seam thereat.
Claim 10
Dependent Claim
26 words
A grease filter as set forth in claim 7 wherein said passages in said front plate are staggered relative to said passages in said back plate.
Claim 11
Dependent Claim
32 words
A grease filter as set forth in claim 7 wherein said front plate has a plurality of pairs of inwardly directed louvers, each said pair of louvers defining a respective passage therebetween.
Claim 12
Dependent Claim
30 words
A grease filter as set forth in claim 7 wherein said frame is formed of a single strip of material having a pair of ends disposed in overlapping welded relation.
Claim 13
Dependent Claim
36 words
A grease filter as set forth in claim 7 wherein each of said front plate, back plate and frame is made of a material selected from the group consisting of aluminum, galvanized steel and stainless steel.
Claim 14
Dependent Claim
23 words
A grease filter as set forth in claim 7 wherein said frame has a plurality of apertures in at least one side thereof.
Claim 15
Dependent Claim
32 words
A grease filter as set forth in claim 7 wherein each said seam is characterized in having five layers of material of said respective plate and said frame defining a cross-section thereof.
Claim 16
Dependent Claim
39 words
A grease filter as set forth in claim 7 wherein said peripheral edge of said front plate is folded over said upper peripheral edge of said frame and said upper peripheral edge of said frame is folded on itself.
Claim 17
Dependent Claim
39 words
A grease filter as set forth in claim 14 wherein said peripheral edge of said back plate is folded over said lower peripheral edge of said frame and said lower peripheral edge of said frame is folded on itself.
Claim 18
Dependent Claim
23 words
A grease filter as set forth in claim 7 wherein each of said front plate and said back plate has a radiused corner.
Claim 19
Dependent Claim
99 words
The combination comprising a first plate having an outwardly directed peripheral flange, a lip extending angularly from said flange, and a plurality of spaced apart parallel passages therein; a second plate having an outwardly directed peripheral flange, a lip extending angularly from said flange, and a plurality of spaced apart parallel passages therein; and a rectangular frame having a pair of flanges extending outwardly thereof whereby said flange of each said plate may be interfolded with a respective flange of said frame to form a seam to secure said respective plate to said frame to form a grease filter.
Claim 20
Dependent Claim
99 words
The combination comprising a first plate having an outwardly directed peripheral flange, a lip extending angularly from said flange, and a plurality of spaced apart parallel passages therein; a second plate having an outwardly directed peripheral flange, a lip extending angularly from said flange, and a plurality of spaced apart parallel passages therein; and a rectangular frame having a pair of flanges extending outwardly thereof whereby said flange of each said plate may be interfolded with a respective flange of said frame to form a seam to secure said respective plate to said frame to form a grease filter.
Claim 21
Dependent Claim
33 words
The combination as set forth in claim 17 wherein said first plate has a plurality of pairs of louvers therein, each said pair of louvers defining a respective one of said passages therein.
Claim 22
Dependent Claim
14 words
The combination as set forth in claim 18 wherein each said louver is corrugated.
Claim 23
Dependent Claim
22 words
The combination as set forth in claim 17 wherein said frame has a plurality of apertures in at least one side thereof.
Claim 24
Dependent Claim
104 words
A grease filter comprising a first plate having a peripheral flange, a lip extending from said flange, and a plurality of spaced apart parallel passages therein; a second plate having a peripheral flange, a lip from said flange, and a plurality of spaced apart parallel passages therein; and a rectangular frame secured to and between said first plate and said second plate, said frame having a pair of flanges, each said flange of said frame being interfolded with said flange of a respective one of said first plate and said second plate to form a seam to secure said frame to each respective plate.
Claim 25
Dependent Claim
104 words
A grease filter comprising a first plate having a peripheral flange, a lip extending from said flange, and a plurality of spaced apart parallel passages therein; a second plate having a peripheral flange, a lip from said flange, and a plurality of spaced apart parallel passages therein; and a rectangular frame secured to and between said first plate and said second plate, said frame having a pair of flanges, each said flange of said frame being interfolded with said flange of a respective one of said first plate and said second plate to form a seam to secure said frame to each respective plate.
Claim 26
Dependent Claim
32 words
A grease filter as set forth in claim 21 wherein each said plate is of rectangular shape with radiused corners and includes a recess extending peripherally thereof adjacent said peripheral flange thereof.
Claim 27
Dependent Claim
19 words
A grease filter as set forth in claim 21 wherein each said seam is a rolled can style seam.
Claim 28
Dependent Claim
43 words
A grease filter as set forth in claim 21 wherein each of said first plate and said second plate has a plurality of pairs of louvers therein, each said pair of louvers defining a passage therebetween for a flow of air and vapor.
Claim 29
Dependent Claim
14 words
The combination as set forth in claim 24 wherein each said louver is corrugated.
Claim 30
Dependent Claim
22 words
The combination as set forth in claim 21 wherein said frame has a plurality of apertures in at least one side thereof.
Claim 31
Dependent Claim
94 words
In a method of forming a grease filter, the steps of obtaining a plate having an outwardly directed peripheral flange, a lip extending angularly from said flange, and a plurality of spaced apart parallel passages therein; obtaining a rectangular frame having a pair of flanges extending outwardly thereof; placing said frame adjacent said plate with said flange of said frame opposite said flange of said plate; and thereafter interfolding said flange of said frame with a respective lip and flange of said plate to form a seam to secure said frame to said plate.
Claim 32
Dependent Claim
94 words
In a method of forming a grease filter, the steps of obtaining a plate having an outwardly directed peripheral flange, a lip extending angularly from said flange, and a plurality of spaced apart parallel passages therein; obtaining a rectangular frame having a pair of flanges extending outwardly thereof; placing said frame adjacent said plate with said flange of said frame opposite said flange of said plate; and thereafter interfolding said flange of said frame with a respective lip and flange of said plate to form a seam to secure said frame to said plate.
Claim 33
Independent Claim
105 words
A method of forming a grease filter comprising the steps of obtaining a pair of plates, each said plate having an outwardly directed peripheral flange, a lip extending angularly from said flange, and a plurality of spaced apart parallel passages therein; obtaining a rectangular frame having a pair of flanges extending outwardly thereof; placing said frame between said pair of plates with each said flange of said frame opposite said flange of a respective plate; and thereafter interfolding each said flange of said frame with a respective lip and flange of a respective plate to form a seam to secure said frame to said plates.
Claim 34
Independent Claim
105 words
A method of forming a grease filter comprising the steps of obtaining a pair of plates, each said plate having an outwardly directed peripheral flange, a lip extending angularly from said flange, and a plurality of spaced apart parallel passages therein; obtaining a rectangular frame having a pair of flanges extending outwardly thereof; placing said frame between said pair of plates with each said flange of said frame opposite said flange of a respective plate; and thereafter interfolding each said flange of said frame with a respective lip and flange of a respective plate to form a seam to secure said frame to said plates.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2008-01-11 | 2008-07-12 | 2009-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-01-11 | 2012-07-12 | 2013-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-01-11 | 2016-07-12 | 2017-01-11 | $7700.00 | Window Closed / Lapsed |