Patent US3219189A successfully refreshed from Google Patents.
US3219189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for scum removal
Assignee: Individual
•
Filing: 1962-08-28
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Granted: 1965-11-23
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Expires: 1982-08-28
Abstract
No abstract record available.
Inventors
- 👤 Richard P Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:51
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/08; B03D1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN A TANK HAVING SIDE WALLS AND AN OPENING IN A SAID SIDE WALL FOR THE DISCHARGE OF SCUM FLOATING ON THE SURFACE OF LIQUID IN THE TANK; THE IMPROVEMENT COMPRISING BLADE MEANS EXTENDING FROM ADJACENT SAID SIDE WALL AND ADJACENT SAID OPENING A SUBSTANTIAL DISTANCE ACROSS THE TANK AND BEING PARTIALLY SUBMERGED IN THE LIQUID IN T HE TANK, JETS ON ONE SIDE OF THE BLADE MEANS AND DIRECTED AWAY FROM THE BLADE MEANS THEREBY TO MOVE SCUM TOWARD THE OPPOSITE SIDE OF THE BLADE MEANS, AND JETS ON SAID OPPOSITE SIDE OF THE BLADE MEANS PARALLEL THERETO AND DIRECTED TOWARD SAID OPENING TO MOVE SCUM TOWARD SAID OPENING.
Claim 2
Dependent Claim
110 words
IN A TANK HAVING SIDE WALLS AND AN OPENING IN A SAID SIDE WALL FOR THE DISCHARGE OF SCUM FLOATING ON THE SURFACE OF LIQUID IN THE TANK; THE IMPROVEMENT COMPRISING BLADE MEANS EXTENDING FROM ADJACENT SAID SIDE WALL AND ADJACENT SAID OPENING A SUBSTANTIAL DISTANCE ACROSS THE TANK AND BEING PARTIALLY SUBMERGED IN THE LIQUID IN T HE TANK, JETS ON ONE SIDE OF THE BLADE MEANS AND DIRECTED AWAY FROM THE BLADE MEANS THEREBY TO MOVE SCUM TOWARD THE OPPOSITE SIDE OF THE BLADE MEANS, AND JETS ON SAID OPPOSITE SIDE OF THE BLADE MEANS PARALLEL THERETO AND DIRECTED TOWARD SAID OPENING TO MOVE SCUM TOWARD SAID OPENING.
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |