US3075334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unit filter assembly
Assignee: American Air Filter Co Inc
•
Filing: 1959-12-18
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Granted: 1963-01-29
•
Expires: 1979-12-18
Abstract
No abstract record available.
Inventors
- 👤 Nutting Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:42
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/10; F; F24; F24F; F24F13/00; F24F13/28; Y; Y10; Y10S; Y10S55/00; Y10S55/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A UNIT FILTER ASSEMBLY COMPRISING A BORDER FRAME MEANS DEFINING AN OPEN UPSTREAM AND DOWNSTREAM FACE TO PERMIT FLUID FLOW THERETHROUGH, SAID BORDER FRAME MEANS INCLUDING BASE AND SIDE WALL MEMBERS ARRANGED SO THAT THE INNER FACES THEREOF DEFINE A CONTINUOUS CHANNEL, FILTER MEDIUM MEANS DISPOSED TRANSVERSE THE DIRECTION OF FLUID FLOW BETWEEN SAID UPSTREAM AND DOWNSTREAM FACES OF SAID BORDER FRAME MEANS, THE EDGES OF SAID FILTER MEDIUM MEANS ENGAGING IN THE CONTINUOUS CHANNEL OF SAID BORDER FRAME MEANS, AND SPACER MEANS BETWEEN THE INNER FACE OF A SIDE WALL OF SAID CHANNEL AND AN OPPOSED FACE OF SAID FILTER MEDIUM EDGES TO MAINTAIN SAID FILTER MEDIUM EDGES IN SPACED RELATIONSHIP FROM SAID INNER FACE OF SAID SIDE WALL OF SAID CHANNEL A DISTANCE GREATER THAN FINGER-TIP THICKNESS TO PROVIDE A FINGER-GRIP SPACE BETWEEN SAID CHANNEL AND SAID FILTER MEDIUM MEANS.
Claim 2
Dependent Claim
142 words
A UNIT FILTER ASSEMBLY COMPRISING A BORDER FRAME MEANS DEFINING AN OPEN UPSTREAM AND DOWNSTREAM FACE TO PERMIT FLUID FLOW THERETHROUGH, SAID BORDER FRAME MEANS INCLUDING BASE AND SIDE WALL MEMBERS ARRANGED SO THAT THE INNER FACES THEREOF DEFINE A CONTINUOUS CHANNEL, FILTER MEDIUM MEANS DISPOSED TRANSVERSE THE DIRECTION OF FLUID FLOW BETWEEN SAID UPSTREAM AND DOWNSTREAM FACES OF SAID BORDER FRAME MEANS, THE EDGES OF SAID FILTER MEDIUM MEANS ENGAGING IN THE CONTINUOUS CHANNEL OF SAID BORDER FRAME MEANS, AND SPACER MEANS BETWEEN THE INNER FACE OF A SIDE WALL OF SAID CHANNEL AND AN OPPOSED FACE OF SAID FILTER MEDIUM EDGES TO MAINTAIN SAID FILTER MEDIUM EDGES IN SPACED RELATIONSHIP FROM SAID INNER FACE OF SAID SIDE WALL OF SAID CHANNEL A DISTANCE GREATER THAN FINGER-TIP THICKNESS TO PROVIDE A FINGER-GRIP SPACE BETWEEN SAID CHANNEL AND SAID FILTER MEDIUM MEANS.
References Cited (Backward Citations)
US1694089A
Cited
US2115946A
Cited
US2142064A
Cited
US2408158A
Cited
US2459802A
Cited
US2513946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |