US3468637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid mixing device
Assignee: Precision Scientific Co
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Filing: 1965-06-09
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Granted: 1969-09-23
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Expires: 1985-06-09
Abstract
No abstract record available.
Inventors
- 👤 Gerald L Hammond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:42
CPC Classifications
B; B01; B01F; B01F25/00; B01F25/40; B01F25/45; B01F25/452; B01F25/4524; B01F25/45241; B01F25/42; B01F25/43; B01F25/435; B01F25/4522; B01F25/45221; Y; Y10; Y10S; Y10S261/00; Y10S261/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
193 words
APPARATUS FOR RAPIDLY MIXING TWO OR MORE FLUIDS, SAID APPARATUS COMPRISING THE COMBINATION OF A PRIMARY MIXING STAGE INCLUDING A FRIT FOR BREAKING UP THE TWO FLUIDS SO AS TO PROVIDE A LARGE INTERFACE BETWEEN THE TWO FLUIDS, AN ELONGATED TUBULAR MEMBER FOR FEEDING THE TWO FLUIDS SIMULTANEOUSLY TO SAID FRIT, AN ANNULAR CHAMBER SURROUNDING SAID FRIT AND A SUBSTANTIAL PORTION OF SAID TUBULAR MEMBER FOR RECEIVING THE FLUID MIXTURE EMERGING FROM THE FRIT AND DIRECTING THE FLUID MIXTURE EMERGING OUTER SURFACE OF THE TUBULAR MEMBER IN A DIRECTION COUNTER TO THAT OF THE INCOMING FLUIDS INSIDE THE TUBULAR MEMBER, AND A SECONDARY MIXING STAGE SURROUNDING SAID TUBULAR MEMBER FOR RECEIVING THE FLUID MIXTURE FROM SAID ANNULAR CHAMBER, SAID SECONDARY MIXING STAGE BEING SPACED AWAY FROM SAID FRIT TOWARD THE INLET END OF SAID TUBULAR MEMBER AND INCLUDING A BED OF PARTICULATE MATERIAL FOR AGAIN BREAKING UP THE TWO FLUIDS TO PROVIDE A LARGE INTERFACE BETWEEN THE TWO FLUIDS, AND AN OUTLET PORT FOR DISCHARGING THE RESULTANT FLUID MIXTURE, SAID ANNULAR CHAMBER INCLUDING A RESTRICTION ADJACENT SAID SECONDARY MIXING STAGE TO INCREASE THE VELOCITY OF THE FLUID MIXTURE ENTERING SAID SECONDARY MIXING STAGE.
Claim 2
Dependent Claim
193 words
APPARATUS FOR RAPIDLY MIXING TWO OR MORE FLUIDS, SAID APPARATUS COMPRISING THE COMBINATION OF A PRIMARY MIXING STAGE INCLUDING A FRIT FOR BREAKING UP THE TWO FLUIDS SO AS TO PROVIDE A LARGE INTERFACE BETWEEN THE TWO FLUIDS, AN ELONGATED TUBULAR MEMBER FOR FEEDING THE TWO FLUIDS SIMULTANEOUSLY TO SAID FRIT, AN ANNULAR CHAMBER SURROUNDING SAID FRIT AND A SUBSTANTIAL PORTION OF SAID TUBULAR MEMBER FOR RECEIVING THE FLUID MIXTURE EMERGING FROM THE FRIT AND DIRECTING THE FLUID MIXTURE EMERGING OUTER SURFACE OF THE TUBULAR MEMBER IN A DIRECTION COUNTER TO THAT OF THE INCOMING FLUIDS INSIDE THE TUBULAR MEMBER, AND A SECONDARY MIXING STAGE SURROUNDING SAID TUBULAR MEMBER FOR RECEIVING THE FLUID MIXTURE FROM SAID ANNULAR CHAMBER, SAID SECONDARY MIXING STAGE BEING SPACED AWAY FROM SAID FRIT TOWARD THE INLET END OF SAID TUBULAR MEMBER AND INCLUDING A BED OF PARTICULATE MATERIAL FOR AGAIN BREAKING UP THE TWO FLUIDS TO PROVIDE A LARGE INTERFACE BETWEEN THE TWO FLUIDS, AND AN OUTLET PORT FOR DISCHARGING THE RESULTANT FLUID MIXTURE, SAID ANNULAR CHAMBER INCLUDING A RESTRICTION ADJACENT SAID SECONDARY MIXING STAGE TO INCREASE THE VELOCITY OF THE FLUID MIXTURE ENTERING SAID SECONDARY MIXING STAGE.
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) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |