US5609937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frame for attachment to air filters
Assignee: Research Products Corp
•
Filing: 1994-08-09
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Granted: 1997-03-11
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Expires: 2014-08-09
Abstract
Abstract A frame for a panel-like filter having two sides terminating in an edge comprises a semi-resilient deformable channel having an inwardly curved web with two flanges extending from a convex side thereof. The curved web also has a longitudinally extending stiffening rib projecting from the convex side thereof. The flanges are engageable with the sides of the filter.
Inventors
- 👤 Dennis O. Reinstad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:30
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/28; Y; Y10; Y10S; Y10S55/00; Y10S55/31; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49833; Y10T428/00; Y10T428/24; Y10T428/2419; Y10T428/24198; Y10T428/29; Y10T428/2902
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
81 words
A frame for a filter having two continuous sides terminating in an edge, said frame comprising: a semi-resilient, deformable channel having an inwardly curved web with two piercing flanges extending from a convex side thereof, said curved web having at least one longitudinally extending, dimpled stiffening rib integrally formed on and projecting centrally from a surface of the web adjacent said edge, said rib enabling said flanges to be forcibly urged into continuous, piercing engagement with the sides of the filter.
Claim 2
Dependent Claim
81 words
A frame for a filter having two continuous sides terminating in an edge, said frame comprising: a semi-resilient, deformable channel having an inwardly curved web with two piercing flanges extending from a convex side thereof, said curved web having at least one longitudinally extending, dimpled stiffening rib integrally formed on and projecting centrally from a surface of the web adjacent said edge, said rib enabling said flanges to be forcibly urged into continuous, piercing engagement with the sides of the filter.
Claim 3
Dependent Claim
23 words
The frame according to claim 1, wherein a series of said channels are positioned adjacent each other around the periphery of the filter.
Claim 4
Dependent Claim
44 words
The frame according to claim 2, wherein at least one end of at least one of said channels is provided with a bendable tongue deformable into an aperture formed in an adjacent channel to lock said channels together around the periphery of the filter.
Claim 5
Dependent Claim
17 words
The frame according to claim 2, wherein each of said channels is formed with complementary end portions.
Claim 6
Dependent Claim
96 words
A frame for a filter having two continuous sides terminating in an edge, said frame comprising: a semi-resilient deformable channel having an inwardly curved web with two piercing flanges extending from a convex side thereof, said web subject to assuming an outwardly curved configuration depending on the stresses imposed thereon, said curved web having a longitudinally extending, dimpled stiffening means integrally formed on and projecting centrally and inwardly from a surface of the web to a position immediately adjacent said edge of said filter for preventing said inwardly curved web from assuming said outwardly curved configuration.
Claim 7
Dependent Claim
96 words
A frame for a filter having two continuous sides terminating in an edge, said frame comprising: a semi-resilient deformable channel having an inwardly curved web with two piercing flanges extending from a convex side thereof, said web subject to assuming an outwardly curved configuration depending on the stresses imposed thereon, said curved web having a longitudinally extending, dimpled stiffening means integrally formed on and projecting centrally and inwardly from a surface of the web to a position immediately adjacent said edge of said filter for preventing said inwardly curved web from assuming said outwardly curved configuration.
Claim 8
Dependent Claim
22 words
The frame according to claim 5, wherein each of said two flanges have a subflange engageable with a side of the filter.
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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) | 2000-03-10 | 2000-09-09 | 2001-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-10 | 2004-09-09 | 2005-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-10 | 2008-09-09 | 2009-03-11 | $7700.00 | Window Closed / Lapsed |