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US3759018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
U-shaped fluid treating filter
Assignee: American Air Filter Co Inc
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Filing: 1972-04-24
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Granted: 1973-09-18
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Expires: 1992-04-24
Abstract
Abstract An improved air filter of U-shaped configuration including a frame having two longitudinally extending border members and a plurality of transversely extending support members; two of the transversely extending support members being exterior support members disposed at the outer extremity of the filter, one of these exterior support members being at generally the upper extremity of one side of the U-shaped filter and the other exterior support member being at the extremity of the opposite side of the U-shaped filter; two of said transversely extending support members being interior support members disposed at the juncture of each side with the base of the U-shaped frame; the border members being adapted to pivot about the axis of the interior transversely extending support members. The filter further includes mounting means on the exterior transversely extending support members for removably mounting of the filter in an air processing unit.
Inventors
- 👤 H Scholl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:18
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; B01D39/20; B01D39/2003; B01D39/2017; B01D46/00; B01D46/10; B01D46/12; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1026
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
171 words
A generally U-shaped filter assembly adapted to be removably mounted in an air processing unit comprising: a frame having an open base and two sides including two longitudinally extending border members generally in parallel; two exterior transversely extending support members generally in parallel, perpendicular to and in connected relation with the border members, one of the exterior support members being disposed at one extremity of said frame and the other exterior support member being disposed at the other extremity of said frame; two interior transversely extending support members generally in parallel, perpendicular to and in connected relation with the border members, each of the interior support members being connected at each junction of said base with each of said sides; said border members including means being adapted for bending movement about the axis of said interior support members; a mat of flexible filter material substantially coextensive with said frame and attached thereto; and, mounting means attached to said frame adaptable for engagement with mount receiving means in an air processing unit.
Claim 2
Dependent Claim
171 words
A generally U-shaped filter assembly adapted to be removably mounted in an air processing unit comprising: a frame having an open base and two sides including two longitudinally extending border members generally in parallel; two exterior transversely extending support members generally in parallel, perpendicular to and in connected relation with the border members, one of the exterior support members being disposed at one extremity of said frame and the other exterior support member being disposed at the other extremity of said frame; two interior transversely extending support members generally in parallel, perpendicular to and in connected relation with the border members, each of the interior support members being connected at each junction of said base with each of said sides; said border members including means being adapted for bending movement about the axis of said interior support members; a mat of flexible filter material substantially coextensive with said frame and attached thereto; and, mounting means attached to said frame adaptable for engagement with mount receiving means in an air processing unit.
Claim 3
Dependent Claim
44 words
The generally U-shaped filter assembly of claim 1 wherein said border members include V-shaped notches therein at the juncture of said border members with said interior support members whereby said border members may be bent at the V-shaped notches to form a U-shaped frame.
Claim 4
Dependent Claim
50 words
The generally U-shaped filter assembly of claim 1 wherein said mounting means is coextensive with said exterior transversely extending support members, said mounting means being of L-shaped cross-section and adaptable for mating with an upwardly extending support channel which is in communication with a housing of an air processing unit.
Claim 5
Dependent Claim
15 words
The generally U-shaped filter assembly of claim 1 wherein said border support members are L-shaped.
Claim 6
Dependent Claim
31 words
The generally U-shaped filter assembly of claim 1 wherein said mat of flexible filter material is a fiberglas filter media of unitary construction having two portions of filaments of different concentration.
Claim 7
Dependent Claim
56 words
The generally U-shaped filter assembly of claim 5 wherein a first portion of said filter media is in communication with said frame and a second portion of said filter media is spaced from said frame, said first portion being disposed therebetween, said second portion having a concentration of filaments of higher concentration than said first portion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |