Patent US3339348A successfully refreshed from Google Patents.
US3339348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air filter cleaner
Assignee: MICROTRON CORP
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Filing: 1963-06-10
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Granted: 1967-09-05
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Expires: 1983-06-10
Abstract
No abstract record available.
Inventors
- 👤 Bratton Cleon
- 👤 Buren C Crane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:49
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/42; B01D46/66; B01D46/68; B01D46/682; B01D2273/00; B01D2273/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A FILTER ASSEMBLY COMPRISING A FRAME, A FILTER MOUNTED IN SAID FRAME, A CARRIAGE DISPOSED TRANSVERSELY OF SAID FRAME AND FILTER, MEANS FOR MOUNTING SAID CARRIAGE FOR MOVEMENT LONGITUDINALLY OF SAID FILTER, CARRIAGE DRIVE MEANS COUPLED TO SAID CARRIAGE FOR IMPARTING RECIPROCATORY MOTION THERETO SUBSTANTIALLY THROUGHOUT THE LENGTH OF SAID FILTER, A VACUUM CLEANING HEAD POSITIONED CLOSELY ADJACENT ONE FACE OF THE FILTER SO AS TO APPLY A SUCTION CLEANING FORCE TO THE FILTER, MEANS FOR MOUNTING SAID HEAD ON SAID CARRIAGE FOR MOVEMENT TRANSVERSELY OF SAID FILTER, VACUUM HEAD DRIVE MEANS ON SAID CARRIAGE, AND MEANS TO OPERATE SAID VACUUM HEAD DRIVE MEANS IN TIMED RELATION TO CERTAIN LONGITUDINAL MOVEMENTS OF SAID CARRIAGE FOR IMPARTING RECIPROCATORY MOTION TO SAID HEAD TRANSVERSELY OF AND SUBSTANTIALLY THROUGHOUT THE WIDTH OF SAID FILTER AND RELATIVE TO SAID CARRIAGE.
Claim 2
Dependent Claim
136 words
A FILTER ASSEMBLY COMPRISING A FRAME, A FILTER MOUNTED IN SAID FRAME, A CARRIAGE DISPOSED TRANSVERSELY OF SAID FRAME AND FILTER, MEANS FOR MOUNTING SAID CARRIAGE FOR MOVEMENT LONGITUDINALLY OF SAID FILTER, CARRIAGE DRIVE MEANS COUPLED TO SAID CARRIAGE FOR IMPARTING RECIPROCATORY MOTION THERETO SUBSTANTIALLY THROUGHOUT THE LENGTH OF SAID FILTER, A VACUUM CLEANING HEAD POSITIONED CLOSELY ADJACENT ONE FACE OF THE FILTER SO AS TO APPLY A SUCTION CLEANING FORCE TO THE FILTER, MEANS FOR MOUNTING SAID HEAD ON SAID CARRIAGE FOR MOVEMENT TRANSVERSELY OF SAID FILTER, VACUUM HEAD DRIVE MEANS ON SAID CARRIAGE, AND MEANS TO OPERATE SAID VACUUM HEAD DRIVE MEANS IN TIMED RELATION TO CERTAIN LONGITUDINAL MOVEMENTS OF SAID CARRIAGE FOR IMPARTING RECIPROCATORY MOTION TO SAID HEAD TRANSVERSELY OF AND SUBSTANTIALLY THROUGHOUT THE WIDTH OF SAID FILTER AND RELATIVE TO SAID CARRIAGE.
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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |