Patent US3698161A successfully refreshed from Google Patents.
US3698161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter
Assignee: Air Maze Corp
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Filing: 1970-11-03
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Granted: 1972-10-17
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Expires: 1990-11-03
Abstract
Abstract A filter for removing impurities from an airstream comprising a housing having filter media holding means operatively attached thereto and a flange portion disposed around said housing, a filter media retainer fixedly attached to said housing, filter media attached in an airtight manner on said flange portion by said holding means, said retainer retaining said media in such a position with respect to the airstream that said filter media forms two coaxial filter pockets of substantially equal depth, thereby optimizing the impurity-removing properties of said filter media.
Inventors
- 👤 Jacob K Brixius
- 👤 Lawrence M Takacs
- 👤 James P Van Sweringen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:44
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/02; B01D2275/00; B01D2275/20; B01D2275/205
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
124 words
A filter for removing impurities from an airstream comprising a housing having filter media holding means operatively attached thereto and a flange disposed within and about the inner periphery of said housing, a filter media retainer frame fixedly attached to said housing, filter media defining two coaxial pockets secured in an airtight manner on said flange by said holding means, said retainer frame retaining said media across said housing with the two integral coaxial filter pockets being of substantially equal depth, thereby optimizing the impurityremoving properties of said filter media, said filter media retainer frame comprises a rectangular section and four diagonally disposed substantially V-shaped members, said rectangular section retaining one of said filter pockets and said V-shaped members retaining said other filter pocket.
Claim 2
Dependent Claim
124 words
A filter for removing impurities from an airstream comprising a housing having filter media holding means operatively attached thereto and a flange disposed within and about the inner periphery of said housing, a filter media retainer frame fixedly attached to said housing, filter media defining two coaxial pockets secured in an airtight manner on said flange by said holding means, said retainer frame retaining said media across said housing with the two integral coaxial filter pockets being of substantially equal depth, thereby optimizing the impurityremoving properties of said filter media, said filter media retainer frame comprises a rectangular section and four diagonally disposed substantially V-shaped members, said rectangular section retaining one of said filter pockets and said V-shaped members retaining said other filter pocket.
Claim 3
Dependent Claim
39 words
A filter according to claim 1 wherein said holding means are two wire-like members, each pivotally attached to said housing and each adapted to attach a portion of said filter media in an airtight manner on said flange 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) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |