US3099546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filters for fluids
Assignee: Nuquip Ltd
•
Filing: 1960-08-26
•
Granted: 1963-07-30
•
Expires: 1980-08-26
Abstract
No abstract record available.
Inventors
- 👤 Smallpeice Cosby Dona Philipps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:52
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/02; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/21; B01D29/213; B01D35/00; B01D35/14; B01D35/143; B01D2201/00; B01D2201/30; B01D2201/309
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A FILTER, FOR CLEANING A GAS, COMPRISING A CONTAINER HAVING AN INLET AND AN OUTLET FOR THE GAS TO BE CLEANED AND AN EXCHANGEABLE FILTER POSITIONED WITHIN SAID CONTAINER, SAID FILTER ELEMENT HAVING A PERMEABLE, AXIALLY EXTENDIBLE AND CONTRACTIBLE, TUBULAR WALL THROUGH THE PORES OF WHICH SAID GAS IS PASSED IN ITS PATH FROM SAID INLET TO SAID OUTLET, SAID WALL BEING AXIALLY CONTRACTIBLE AGAINST A BIAS AS A RESULT OF A DIFFERENCE IN GAS PRESSURE UPSTREAM AND DOWNSTREAM OF SAID WALL DUE TO REDUCTION OF ITS PERMEABILITY BY AN ACCRETION OF FILTERED RESIDUE TO GIVE AN INDICATION OF THE REDUCTION OF THE PERMEABILITY OF SAID WALL, THE FILTER ALSO COMPRISING A VALVE THROUGH WHICH SAID GAS CAN PASS FROM SAID CONTAINER, SAID VALVE BEING OPENED ON SAID CONTRACTION OF SAID WALL, AND A FLOWRESPONSIVE DEVICE CAPABLE OF GIVING AN AUDIBLE SIGNAL
Claim 2
Dependent Claim
142 words
A FILTER, FOR CLEANING A GAS, COMPRISING A CONTAINER HAVING AN INLET AND AN OUTLET FOR THE GAS TO BE CLEANED AND AN EXCHANGEABLE FILTER POSITIONED WITHIN SAID CONTAINER, SAID FILTER ELEMENT HAVING A PERMEABLE, AXIALLY EXTENDIBLE AND CONTRACTIBLE, TUBULAR WALL THROUGH THE PORES OF WHICH SAID GAS IS PASSED IN ITS PATH FROM SAID INLET TO SAID OUTLET, SAID WALL BEING AXIALLY CONTRACTIBLE AGAINST A BIAS AS A RESULT OF A DIFFERENCE IN GAS PRESSURE UPSTREAM AND DOWNSTREAM OF SAID WALL DUE TO REDUCTION OF ITS PERMEABILITY BY AN ACCRETION OF FILTERED RESIDUE TO GIVE AN INDICATION OF THE REDUCTION OF THE PERMEABILITY OF SAID WALL, THE FILTER ALSO COMPRISING A VALVE THROUGH WHICH SAID GAS CAN PASS FROM SAID CONTAINER, SAID VALVE BEING OPENED ON SAID CONTRACTION OF SAID WALL, AND A FLOWRESPONSIVE DEVICE CAPABLE OF GIVING AN AUDIBLE SIGNAL
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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) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |