Patent US3131910A successfully refreshed from Google Patents.
US3131910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for mixing a plurality of viscous fluids
Assignee: Dow Chemical Co
•
Filing: 1962-04-04
•
Granted: 1964-05-05
•
Expires: 1982-04-04
Abstract
No abstract record available.
Inventors
- 👤 Walter J Schrenk
- 👤 Douglas S Chisholm
- 👤 Jr Turner Alfrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:11
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/361; B29C48/03
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
67 words
APPARATUS FOR MIXING A PLURALITY OF VISCOUS FLUIDS COMPRISING IN COMBINATION, A CYLINDRICAL MIXING CHAMBER HAVING OPEN ENDS, FEEDPORT MEANS ARRANGED TO INTRODUCE FLUIDS INTO ONE END OF THE MIXING CHAMBER SO THAT THE LIQUIDS ARE ARRANGED IN ALTERNATE REPETITIVE SEQUENCE DEFINING SECTORS WHICH CONVERGE GENERALLY AT THE AXIS OF THE MIXING CHAMBER, AND MEANS TO EFFECT RELATIVE ROTATION BETWEEN THE MIXING CHAMBER AND THE FEEDPORT MEANS.
Claim 2
Dependent Claim
67 words
APPARATUS FOR MIXING A PLURALITY OF VISCOUS FLUIDS COMPRISING IN COMBINATION, A CYLINDRICAL MIXING CHAMBER HAVING OPEN ENDS, FEEDPORT MEANS ARRANGED TO INTRODUCE FLUIDS INTO ONE END OF THE MIXING CHAMBER SO THAT THE LIQUIDS ARE ARRANGED IN ALTERNATE REPETITIVE SEQUENCE DEFINING SECTORS WHICH CONVERGE GENERALLY AT THE AXIS OF THE MIXING CHAMBER, AND MEANS TO EFFECT RELATIVE ROTATION BETWEEN THE MIXING CHAMBER AND THE FEEDPORT MEANS.
Claim 3
Independent Claim
55 words
A METHOD FOR MIXING PLURALITY OF VISCOUS FLUIDS COMPRISING THE STEPS OF, ARRANGING SAID LIQUIDS IN ALTERNATE SEQUENCE ABOUT A CIRCUMFERENCE TO DEFINE A PLURALITY OF SECTORS WHICH CONVERGE AT A CENTRAL POINT, AND APPLYING A ROTATING FLUID MOVING FORCE ABUOT THE CIRCUMFERENCE OF SAID SECTORS, WHILE SIMULTANEOUSLY MOVING THE LIQUIDS ALONG A LONGITUDINAL PATH.
Claim 4
Independent Claim
55 words
A METHOD FOR MIXING PLURALITY OF VISCOUS FLUIDS COMPRISING THE STEPS OF, ARRANGING SAID LIQUIDS IN ALTERNATE SEQUENCE ABOUT A CIRCUMFERENCE TO DEFINE A PLURALITY OF SECTORS WHICH CONVERGE AT A CENTRAL POINT, AND APPLYING A ROTATING FLUID MOVING FORCE ABUOT THE CIRCUMFERENCE OF SAID SECTORS, WHILE SIMULTANEOUSLY MOVING THE LIQUIDS ALONG A LONGITUDINAL PATH.
References Cited (Backward Citations)
US1988743A
Cited
US1935884A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |