Patent US2431266A successfully refreshed from Google Patents.
US6955702B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter frame
Assignee: 3M Innovative Properties Co
•
Filing: 2002-06-14
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Granted: 2005-10-18
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Expires: 2022-06-14
Abstract
Abstract A reusable filter frame adapted to receive a replaceable filter element includes a base and a cover connected with the base. The base includes a plurality of longitudinal rails and a plurality of transverse ribs for supporting and spacing the filter element. The filter frame also includes a securing mechanism for securing the filter element to the frame and maintaining the filter element in its expanded condition.
Inventors
- 👤 James O. Kubokawa
- 👤 Ben G. Rogowski
- 👤 Thomas A. Tedham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:19
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/52; B01D46/521; B01D46/523; B01D46/0002; B01D46/0005; B01D46/10; B01D46/88; Y; Y10; Y10S; Y10S55/00; Y10S55/31
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
70 words
A reusable filter frame for use with a replaceable pleated filter element, said frame comprising a base having a perimeter structure and a plurality of transverse ribs connected with said perimeter structure adapted to mesh with the filter pleats, said frame including a securing mechanism comprising at least one projection on said base for attaching the filter element to the frame and retaining the filter element in its expanded condition.
Claim 2
Dependent Claim
70 words
A reusable filter frame for use with a replaceable pleated filter element, said frame comprising a base having a perimeter structure and a plurality of transverse ribs connected with said perimeter structure adapted to mesh with the filter pleats, said frame including a securing mechanism comprising at least one projection on said base for attaching the filter element to the frame and retaining the filter element in its expanded condition.
Claim 3
Dependent Claim
36 words
A reusable filter frame as defined in claim 1 , further comprising a cover arranged on said base, said cover containing at least one hole that mates with said at least one projection on said base.
Claim 4
Dependent Claim
42 words
A reusable filter frame as defined in claim 1 , further comprising a removable cover operatively associated with said base, said cover including a perimeter structure defining a center opening free of obstruction to allow air to flow through the filter element.
Claim 5
Dependent Claim
68 words
A reusable filter frame for use with a replaceable pleated filter element, said frame comprising a base having a perimeter structure defining a central area and a plurality of transverse ribs connected with said perimeter structure adapted to mesh with the filter pleats and a plurality of longitudinal rails extending across said central area, wherein said longitudinal rails include spacing portions adapted to mesh with the filter pleats.
Claim 6
Dependent Claim
68 words
A reusable filter frame for use with a replaceable pleated filter element, said frame comprising a base having a perimeter structure defining a central area and a plurality of transverse ribs connected with said perimeter structure adapted to mesh with the filter pleats and a plurality of longitudinal rails extending across said central area, wherein said longitudinal rails include spacing portions adapted to mesh with the filter pleats.
Claim 7
Dependent Claim
87 words
A reusable filter frame for use with a replaceable pleated filter element, said frame comprising: (a) a base having a perimeter structure defining a central area and a plurality of transverse ribs connected with said perimeter structure adapted to mesh with the filter pleats and a plurality of longitudinal rails extending across said central area, and (b) a removable cover operatively associated with said base, said cover including a perimeter structure defining a central opening free of obstruction to allow air to flow through the filter element.
Claim 8
Dependent Claim
87 words
A reusable filter frame for use with a replaceable pleated filter element, said frame comprising: (a) a base having a perimeter structure defining a central area and a plurality of transverse ribs connected with said perimeter structure adapted to mesh with the filter pleats and a plurality of longitudinal rails extending across said central area, and (b) a removable cover operatively associated with said base, said cover including a perimeter structure defining a central opening free of obstruction to allow air to flow through the filter element.
Claim 9
Dependent Claim
144 words
A reusable filter frame for a residential heating and cooling system adapted to receive a replaceable, reversibly collapsible and expandable pleated filter element, said frame comprising: (a) a base including a perimeter structure, a plurality of longitudinal rails arranged within said perimeter structure, and a plurality of transverse ribs adapted to mesh with an equal number of filter pleats; and (b) a cover hingably connected with said base, said cover containing a central opening free of obstructions for allowing air to flow through the filter element; said frame comprising a unitary structure molded from a synthetic plastic material, said frame including a securing mechanism comprising aligned projections and holes provided in said base and said cover for attaching the filter element to the frame and retaining the filter element in its expanded condition, and a closure for maintaining the frame in a closed condition.
Claim 10
Dependent Claim
144 words
A reusable filter frame for a residential heating and cooling system adapted to receive a replaceable, reversibly collapsible and expandable pleated filter element, said frame comprising: (a) a base including a perimeter structure, a plurality of longitudinal rails arranged within said perimeter structure, and a plurality of transverse ribs adapted to mesh with an equal number of filter pleats; and (b) a cover hingably connected with said base, said cover containing a central opening free of obstructions for allowing air to flow through the filter element; said frame comprising a unitary structure molded from a synthetic plastic material, said frame including a securing mechanism comprising aligned projections and holes provided in said base and said cover for attaching the filter element to the frame and retaining the filter element in its expanded condition, and a closure for maintaining the frame in a closed condition.
References Cited (Backward Citations)
US2074294A
Cited
US2130107A
Cited
US2423741A
Cited
US2479722A
Cited
US2739667A
Cited
US3187489A
Cited
US3234717A
Cited
US3183286A
Cited
US3280984A
Cited
US3373546A
Cited
US3624161A
Cited
US3494113A
Cited
US3712033A
Cited
US3774377A
Cited
US3789589A
Cited
CA1011265A
Cited
US4042358A
Cited
CA1073826A
Cited
US4135900A
Cited
US4334899A
Cited
US4363643A
Cited
US4449993A
Cited
US4549887A
Cited
US4547950A
Cited
US4617122A
Cited
US4701196A
Cited
US4762053A
Cited
US4756728A
Cited
US5108470A
Cited
US4999038A
Cited
US5015377A
Cited
US5059218A
Cited
US4978375A
Cited
US5075000A
Cited
JPH04131112A
Cited
US5133789A
Cited
US5505852A
Cited
US5217513A
Cited
US5252111A
Cited
US5273564A
Cited
US5273563A
Cited
US5618324A
Cited
US5464461A
Cited
US5399180A
Cited
US5458772A
Cited
US5595107A
Cited
US5639287A
Cited
US5613991A
Cited
US5571300A
Cited
US5814219A
Cited
US5779747A
Cited
US5809800A
Cited
US5792228A
Cited
JPH09287811A
Cited
US5820644A
Cited
US5840094A
Cited
US5743927A
Cited
US5958097A
Cited
US6074450A
Cited
US6033453A
Cited
US5846302A
Cited
US5968217A
Cited
US6179891B1
Cited
US6030427A
Cited
US6059852A
Cited
US20020020156A1
Cited
US6328778B1
Cited
JP2001062232A
Cited
US20020166312A1
Cited
US6599343B2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2008-10-17 | 2009-04-18 | 2009-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-10-17 | 2013-04-18 | 2013-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-10-17 | 2017-04-18 | 2017-10-18 | $7700.00 | Window Closed / Lapsed |