Patent US3104819A successfully refreshed from Google Patents.
US3104819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spiral screened fluid mixing devices
Assignee: —
•
Filing: —
•
Granted: 1963-09-24
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Expires: 1980-09-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:27
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/08; E03C1/084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN COMBINATION A CONDUIT, MEANS FOR INTRODUCING WATER AND AIR TO SAID CONDUIT, AND MEANS FOR IMPOSING RESISTANCE TO THE FLOW OF FLUID THROUGH SAID CONDUIT THEREBY TO THOROUGHLY MIX SAID WATER AND AIR TO PRODUCE A BUBBLY STREAM OF WATER, SAID RESISTANCE MEANS COMPRISING A RESILIENT SPIRAL OF RESISTANCE PRODUCING MATERIAL LOCATED WITHIN SAID CONDUIT SUBSTANTIALLY TRANSVERSE TO THE DIRECTION OF FLUID FLOW THERETHROUGH, THE ADJACENT CONVOLUTIONS OF SAID SPIRAL BEING DISPOSED CLOSELY ADJACENT TO BUT SPACED FROM ONE ANOTHER TO AFFORD SUFFICIENT RESISTANCE TO SAID FLUID FLOW TO EFFECT FORMATION OF SAID BUBBLY STREAM, THE OUTER CONVOLUTIONS OF SAID SPIRAL BEING RESILIENTLY PRESSED AGAINST THE INNER WALLS OF SAID CONDUIT.
Claim 2
Dependent Claim
112 words
IN COMBINATION A CONDUIT, MEANS FOR INTRODUCING WATER AND AIR TO SAID CONDUIT, AND MEANS FOR IMPOSING RESISTANCE TO THE FLOW OF FLUID THROUGH SAID CONDUIT THEREBY TO THOROUGHLY MIX SAID WATER AND AIR TO PRODUCE A BUBBLY STREAM OF WATER, SAID RESISTANCE MEANS COMPRISING A RESILIENT SPIRAL OF RESISTANCE PRODUCING MATERIAL LOCATED WITHIN SAID CONDUIT SUBSTANTIALLY TRANSVERSE TO THE DIRECTION OF FLUID FLOW THERETHROUGH, THE ADJACENT CONVOLUTIONS OF SAID SPIRAL BEING DISPOSED CLOSELY ADJACENT TO BUT SPACED FROM ONE ANOTHER TO AFFORD SUFFICIENT RESISTANCE TO SAID FLUID FLOW TO EFFECT FORMATION OF SAID BUBBLY STREAM, THE OUTER CONVOLUTIONS OF SAID SPIRAL BEING RESILIENTLY PRESSED AGAINST THE INNER WALLS OF SAID CONDUIT.
References Cited (Backward Citations)
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Cited
GB189700696A
Cited
US1167320A
Cited
US1237779A
Cited
GB218768A
Cited
US2316832A
Cited
US2137854A
Cited
US2636519A
Cited
US2707624A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |