US3143997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter capacity indicator
Assignee: Motors Liquidation Co
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Filing: 1962-10-18
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Granted: 1964-08-11
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Expires: 1982-10-18
Abstract
No abstract record available.
Inventors
- 👤 Carl W Norberg
- 👤 William D Pittsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:53
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/0084; B01D46/0086; B01D46/42; B01D46/4254; F; F02; F02M; F02M35/00; F02M35/02; F02M35/08; F02M35/09; B01D2265/00; B01D2265/04; B01D2265/05; B01D2279/00; B01D2279/60; Y; Y10; Y10S; Y10S116/00; Y10S116/25; Y10S138/00; Y10S138/09; Y10S55/00; Y10S55/13; Y10S55/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
190 words
IN A FILTER UNIT DESIGNED TO SEPARATE ENTRAINED SOLID PARTICLES FROM A GASEOUS MEDIUM MOVING THERETHROUGH, A HOUSING HAVING INLET AND OUTLET OPENINGS, A FILTER ELEMENT IN THE HOUSING SEPARATING SAID OPENINGS AND HAVING AN UPSTREAM SIDE ADJACENT THE INLET AND A DOWNSTREAM SIDE ADJACENT THE OUTLET SO THAT CONTAMINANTS ARE DRAWN INTO THE FILTER ELEMENT ON THE UPSTREAM SIDE BY THE GAS MOVING IN THE FILTER UNIT ON ITS WAY TO THE OUTLET, THE COMBINATION COMPRISING, AN INDICATOR DEVICE INCLUDING TUBULAR CASING MEANS HAVAN INLET AND OUTLET OPENING, A FILTER MEDIA WITHIN THE CASING MEANS SEPARATING THE INLET AND OUTLET OPENINGS THEREOF AND BEING FORMED OF A MATERIAL SUBSTANTIALLY THE SAME AS THE MATERIAL OF SAID FILTER ELEMENT, THE OUTLET OPENING OF SAID CASING MEANS BEING RECEIVED IN SAID HOUSING AND COMMUNICATING WITH THE GAS MOVING WITHIN THE FILTER UNIT, THE INLET OPENING OF SAID CASING MEANS BEING EXPOSED TO THE CONTAMINATED GASEOUS MEDIUM ENTERING SAID FILTER UNIT AND BEING OF LARGER AREA THAN SAID OUTLET OPENING WHEREBY SAID FILTER MEDIA HAS A CONTAMINATE PENETRATION RATE PROPORTIONAL TO THAT OF THE FILTER ELEMENT TO INDICATE THE FILTERING CONDITION THEREOF.
Claim 2
Dependent Claim
190 words
IN A FILTER UNIT DESIGNED TO SEPARATE ENTRAINED SOLID PARTICLES FROM A GASEOUS MEDIUM MOVING THERETHROUGH, A HOUSING HAVING INLET AND OUTLET OPENINGS, A FILTER ELEMENT IN THE HOUSING SEPARATING SAID OPENINGS AND HAVING AN UPSTREAM SIDE ADJACENT THE INLET AND A DOWNSTREAM SIDE ADJACENT THE OUTLET SO THAT CONTAMINANTS ARE DRAWN INTO THE FILTER ELEMENT ON THE UPSTREAM SIDE BY THE GAS MOVING IN THE FILTER UNIT ON ITS WAY TO THE OUTLET, THE COMBINATION COMPRISING, AN INDICATOR DEVICE INCLUDING TUBULAR CASING MEANS HAVAN INLET AND OUTLET OPENING, A FILTER MEDIA WITHIN THE CASING MEANS SEPARATING THE INLET AND OUTLET OPENINGS THEREOF AND BEING FORMED OF A MATERIAL SUBSTANTIALLY THE SAME AS THE MATERIAL OF SAID FILTER ELEMENT, THE OUTLET OPENING OF SAID CASING MEANS BEING RECEIVED IN SAID HOUSING AND COMMUNICATING WITH THE GAS MOVING WITHIN THE FILTER UNIT, THE INLET OPENING OF SAID CASING MEANS BEING EXPOSED TO THE CONTAMINATED GASEOUS MEDIUM ENTERING SAID FILTER UNIT AND BEING OF LARGER AREA THAN SAID OUTLET OPENING WHEREBY SAID FILTER MEDIA HAS A CONTAMINATE PENETRATION RATE PROPORTIONAL TO THAT OF THE FILTER ELEMENT TO INDICATE THE FILTERING CONDITION THEREOF.
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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |