US3667737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Entrainment of a liquid medium or other additive in a liquid or other formulation
Assignee: John Laing and Son Ltd
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Filing: 1969-11-28
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Granted: 1972-06-06
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Expires: 1989-11-28
Abstract
Abstract A CAVITATION ELEMENT FOR INDUCING CAVITATION IN, FOR EXAMPLE, A WET CONCRETE MIX. THE ELEMENT HAS A SMOOTH UPSTREAM PROFILE AND A BLUFF DOWNSTREAM PROFILE WITH FORMATIONS ON ITS UPPER SURFACE WHICH INDUCE A CORRUGATED SHAPE TO THE ENVELOPE OF THE CAVITATION IMMEDIATELY DOWNSTREAM OF THE BLUFF PROFILE. AN INLET WITHIN THE ELEMENT COMMUNICATES WITH A NUMBER OF APPERTURES OPENING INTO THE BLUFF PROFILE WHEREBY A JET, OR JETS, OF FLUID OR OTHER ADDITIVE ARE SUPPLIED THROUGH THE APPERTURES INTO CAVITATION INDUCED BY THE BLUFF PROFILE.
Inventors
- 👤 Alan Colin Scott Howe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:04
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/38; B28C5/381; B28C5/383; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/233; B01F23/2331; B01F23/23311; B01F23/23316; B01F23/235; B01F23/2351; B01F27/00; B01F27/21; B01F27/2122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |