US3303635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter cleaning system
Assignee: MICROTRON CORP
•
Filing: 1964-08-06
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Granted: 1967-02-14
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Expires: 1984-08-06
Abstract
No abstract record available.
Inventors
- 👤 James W Sherrill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:57
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A METHOD OF CLEANING A FILTER WHICH COMPRISES (A) MOVING A SUCTION CLEANING HEAD AUTOMATICALLY THROUGH A FILTER CLEANING CYCLE ADJACENT AND GENERALLY PARALLEL TO ONE FACE OF THE FILTER FROM A STARTING POINT THROUGH A SINUOUS PATH OF TRAVEL TO A TERMINAL POINT WHILE APPLYING A SUCTION CLEANING FORCE TO THE FILTER THROUGH SAID SUCTION CLEANING HEAD AND WHILE SIMULTANEOUSLY CLEANING GAS WITH SAID FILTER, AND (B) AUTOMATICALLY RETURNING SAID SUCTION CLEANING HEAD FROM SAID TERMINAL POINT AND ACROSS THE FILTER SUBSTANTIALLY TO SAID STARTING POINT IN A SUBSTANTIALLY DIRECT PATH OF TRAVEL CROSSING SAID SINUOUS PATH OF TRAVEL PREVIOUSLY TRACED DURING SAID FILTER CLEANING CYCLE WHILE CONTINUING APPLICATION OF SAID SUCTION CLEANING FORCE TO EFFECT ADDITIONAL CLEANING OF THE FILTER AND FOR QUICKLY REPOSITIONING SAID SUCTION CLEANING HEAD FOR A SUCCEEDING FILTER CLEANING CYCLE.
Claim 2
Independent Claim
136 words
A METHOD OF CLEANING A FILTER WHICH COMPRISES (A) MOVING A SUCTION CLEANING HEAD AUTOMATICALLY THROUGH A FILTER CLEANING CYCLE ADJACENT AND GENERALLY PARALLEL TO ONE FACE OF THE FILTER FROM A STARTING POINT THROUGH A SINUOUS PATH OF TRAVEL TO A TERMINAL POINT WHILE APPLYING A SUCTION CLEANING FORCE TO THE FILTER THROUGH SAID SUCTION CLEANING HEAD AND WHILE SIMULTANEOUSLY CLEANING GAS WITH SAID FILTER, AND (B) AUTOMATICALLY RETURNING SAID SUCTION CLEANING HEAD FROM SAID TERMINAL POINT AND ACROSS THE FILTER SUBSTANTIALLY TO SAID STARTING POINT IN A SUBSTANTIALLY DIRECT PATH OF TRAVEL CROSSING SAID SINUOUS PATH OF TRAVEL PREVIOUSLY TRACED DURING SAID FILTER CLEANING CYCLE WHILE CONTINUING APPLICATION OF SAID SUCTION CLEANING FORCE TO EFFECT ADDITIONAL CLEANING OF THE FILTER AND FOR QUICKLY REPOSITIONING SAID SUCTION CLEANING HEAD FOR A SUCCEEDING FILTER CLEANING CYCLE.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |