Patent US2956032A successfully refreshed from Google Patents.
US6464745B2
Expired / Lapsed
US
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Minipleat synthetic air filter assembly
Assignee: Freudenberg Filtration Technologies LP
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Filing: 2001-01-26
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Granted: 2002-10-15
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Expires: 2021-01-26
Abstract
Abstract A minipleat synthetic filter assembly is provided. The filter assembly includes a frame assembly and a section of pleated filter media mounted within the frame assembly. The frame assembly includes a plurality of corner members and an equal plurality of side members interconnecting the corner members. The frame assembly may be made in any desired size and shape to accommodate a wide variety of applications. The section of filter media is a sheet of a synthetic nonwoven material folded to form minipleats having a spacing between adjacent peaks of no greater than 20 mm.
Inventors
- 👤 Samuel Rivera
- 👤 Simon D. Ladd
- 👤 Michelle Pritzkau
- 👤 Kent Mertz
- 👤 Markus Schmitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:21
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/52; B01D46/521; B01D46/523; B01D46/0002; B01D46/0005; B01D46/10; B01D2279/00; B01D2279/50; Y; Y10; Y10S; Y10S55/00; Y10S55/31
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
127 words
A filter assembly comprising: a filter frame comprising a plurality of corner members and an equal plurality of side members interconnecting the corner members, wherein: each of the corner members comprises an angled member comprising two arms and a tongue protruding from each of the two arms; each of the side members comprises an elongated member having a slot at each end of the side member configured to receive the tongue of the corner member, the slots defined on an outer surface of the side member; and each of the corner members and the side members includes opposed side walls extending from an inner surface to provide a filter receiving channel; and a filter section comprising a sheet of pleated filter media mounted within the filter frame.
Claim 2
Dependent Claim
127 words
A filter assembly comprising: a filter frame comprising a plurality of corner members and an equal plurality of side members interconnecting the corner members, wherein: each of the corner members comprises an angled member comprising two arms and a tongue protruding from each of the two arms; each of the side members comprises an elongated member having a slot at each end of the side member configured to receive the tongue of the corner member, the slots defined on an outer surface of the side member; and each of the corner members and the side members includes opposed side walls extending from an inner surface to provide a filter receiving channel; and a filter section comprising a sheet of pleated filter media mounted within the filter frame.
Claim 3
Dependent Claim
22 words
The filter assembly of claim 1 , wherein the plurality of corner members and the equal plurality of side members are four.
Claim 4
Dependent Claim
15 words
The filter assembly of claim 1 , wherein the angled member is angled at 90°.
Claim 5
Dependent Claim
25 words
The filter assembly of claim 1 , wherein the tongue includes one or more ribs thereon to engage the outer surface of the side member.
Claim 6
Dependent Claim
15 words
The filter assembly of claim 1 , wherein the corner members comprise a plastic material.
Claim 7
Dependent Claim
14 words
The filter assembly of claim 1 , wherein the corner members comprise a polystyrene.
Claim 8
Dependent Claim
15 words
The filter assembly of claim 1 , wherein the corner members comprise injection molded members.
Claim 9
Dependent Claim
15 words
The filter assembly of claim 1 , wherein the side members comprise a plastic material.
Claim 10
Dependent Claim
14 words
The filter assembly of claim 1 , wherein the side members comprise a polystyrene.
Claim 11
Dependent Claim
13 words
The filter assembly of claim 1 , wherein the side members comprise extrusions.
Claim 12
Dependent Claim
30 words
The filter assembly of claim 1 , wherein the slots on each side member are defined by a pair of opposed lips on the outer surface of the side member.
Claim 13
Dependent Claim
77 words
The filter assembly of claim 1 , wherein: the corner members include a second tongue protruding from each of the two-arms; and the side members include a second slot next to the slot, the slot and the second slot defined by a pair of opposed lips along outer edges and on an outer side of the side member, and a pair of central lips along a center line and on the outer side of the side member.
Claim 14
Dependent Claim
23 words
The filter assembly of claim 1 , further comprising a joint member configured to attach the filter assembly to a further filter assembly.
Claim 15
Dependent Claim
39 words
The filter assembly of claim 13 , wherein the joint member comprises a leg sized to fit within the slot of the side member and a shorter leg sized to fit within a slot of an adjacent side member.
Claim 16
Dependent Claim
27 words
The filter assembly of claim 1 , wherein the sheet of filter media comprises pleats having a spacing between adjacent peaks of no greater than 20 mm.
Claim 17
Dependent Claim
30 words
The filter assembly of claim 1 , wherein the sheet of filter media comprises pleats having a spacing between adjacent peaks ranging from approximately 5 mm to approximately 7.5 mm.
Claim 18
Dependent Claim
18 words
The filter assembly of claim 1 , wherein the sheet of filter media comprises a nonwoven synthetic material.
Claim 19
Dependent Claim
19 words
The filter assembly of claim 1 , wherein the sheet of pleated filter media comprises a minipleat filter media.
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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) | 2005-10-14 | 2006-04-15 | 2006-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-10-14 | 2010-04-15 | 2010-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-10-14 | 2014-04-15 | 2014-10-15 | $7700.00 | Window Closed / Lapsed |