Patent US3288296A successfully refreshed from Google Patents.
US3288296A
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Assignee: Individual
•
Filing: 1963-11-08
•
Granted: 1966-11-29
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Expires: 1983-11-08
Abstract
No abstract record available.
Inventors
- 👤 Hirs Gene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:20
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/333
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
A FILTER SCREEN ASSEMBLY COMPRISING A PAIR OF SPACED PARALLEL DRIVE CHAINS, A PLURALITY OF ELONGATE CROSS BARS OF UNIFORM THICKNESS EXTENDING TRANSVERSELY BETWEEN SAID CHAINS IN PARALLEL RELATIONSHIP WITH EACH OTHER AT UNIFORMLY SPACED INTERVALS ALONG SAID CHAINS, MEANS SECURING THE OPPOSITE ENDS OF SAID CROSS BARS TO SAID CHAINS FOR MOVEMENT THEREWITH, A PLURALITY OF SCREEN ELEMENTS HAVING PARALLEL END EDGES, A REINFORCING STRIP FIXEDLY SECURED TO AND EXTENDING ALONG EACH OF SAID END EDGES, A PLURALITY OF ELONGATED COUPLING MEMBERS EACH HAVING A WEB AND PARALLEL SIDE WALLS PROJECTING FROM ONE SIDE OF SAID WEB, LIP MEANS ON THE INNER SIDE OF EACH SIDE WALL FOR FRICTIONALLY GRIPPING A REINFORCING STRIP BETWEEN THE LIP MEANS AND SAID WEB, SAID LIP MEANS BEING TRANSVERSELY SPACED FROM EACH OTHER BY A DISTANCE SLIGHTLY GREATER THAN THE THICKNESS OF SAID CROSS BAR MEMBERS, AND MEANS FOR DETACHABLY MOUNTED SAID COUPLING MEMBERS ON SAID CROSS BARS WITH THE SIDE WALLS AND LIP MEANS OF SAID COUPLING MEMBERS DISPOSED ON OPPOSITE SIDES OF SAID CROSS BARS TO POSITIVELY RETAIN SAID REINFORCING STRIPS IN ASSEMBLED RELATIONSHIP WITH SAID CROSS BARS.
Claim 2
Dependent Claim
187 words
A FILTER SCREEN ASSEMBLY COMPRISING A PAIR OF SPACED PARALLEL DRIVE CHAINS, A PLURALITY OF ELONGATE CROSS BARS OF UNIFORM THICKNESS EXTENDING TRANSVERSELY BETWEEN SAID CHAINS IN PARALLEL RELATIONSHIP WITH EACH OTHER AT UNIFORMLY SPACED INTERVALS ALONG SAID CHAINS, MEANS SECURING THE OPPOSITE ENDS OF SAID CROSS BARS TO SAID CHAINS FOR MOVEMENT THEREWITH, A PLURALITY OF SCREEN ELEMENTS HAVING PARALLEL END EDGES, A REINFORCING STRIP FIXEDLY SECURED TO AND EXTENDING ALONG EACH OF SAID END EDGES, A PLURALITY OF ELONGATED COUPLING MEMBERS EACH HAVING A WEB AND PARALLEL SIDE WALLS PROJECTING FROM ONE SIDE OF SAID WEB, LIP MEANS ON THE INNER SIDE OF EACH SIDE WALL FOR FRICTIONALLY GRIPPING A REINFORCING STRIP BETWEEN THE LIP MEANS AND SAID WEB, SAID LIP MEANS BEING TRANSVERSELY SPACED FROM EACH OTHER BY A DISTANCE SLIGHTLY GREATER THAN THE THICKNESS OF SAID CROSS BAR MEMBERS, AND MEANS FOR DETACHABLY MOUNTED SAID COUPLING MEMBERS ON SAID CROSS BARS WITH THE SIDE WALLS AND LIP MEANS OF SAID COUPLING MEMBERS DISPOSED ON OPPOSITE SIDES OF SAID CROSS BARS TO POSITIVELY RETAIN SAID REINFORCING STRIPS IN ASSEMBLED RELATIONSHIP WITH SAID CROSS BARS.
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |