US3986706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing method
Assignee: Colgate Palmolive Co
•
Filing: 1974-05-01
•
Granted: 1976-10-19
•
Expires: 1994-05-01
Abstract
Abstract Method for homogeneously mixing relative dry particulate material such as detergent with liquid material which may be viscous or sticky or otherwise difficult to admix with the particulate material comprising a spinning disc for receiving and forming by centrifugal action a continuous annular free falling curtain layer of particulate material and a lower spinning disc within the curtain layer for forming and centrifugally directing a continuous annular film or spray of liquid material into intersecting relation with the curtain layer.
Inventors
- 👤 Giuseppe Giombini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:44
CPC Classifications
B; B01; B01F; B01F25/00; B01F25/70; B01F25/74; B01F25/741; B01F25/7411
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
89 words
A method of mixing relatively dry particulate material with liquid material which comprises providing and centrifugally spreading at different levels continuous separate substantially coaxial annular layers or layer-like formations of said materials, and wherein said particulate material is distributed outwardly by centrifugal force to form a descending free falling annular curtain of said particulate material, and said liquid material is distributed outwardly by centrifugal force from within said curtain as an annular film or spray directed toward and intersecting said curtain to mix with said freely falling particulate material.
Claim 2
Independent Claim
89 words
A method of mixing relatively dry particulate material with liquid material which comprises providing and centrifugally spreading at different levels continuous separate substantially coaxial annular layers or layer-like formations of said materials, and wherein said particulate material is distributed outwardly by centrifugal force to form a descending free falling annular curtain of said particulate material, and said liquid material is distributed outwardly by centrifugal force from within said curtain as an annular film or spray directed toward and intersecting said curtain to mix with said freely falling particulate material.
Claim 3
Dependent Claim
29 words
The method defined in claim 1, wherein the outward velocity of said liquid material is such that the liquid material does not pass appreciably radially outwardly of said curtain.
Claim 4
Dependent Claim
13 words
The method defined in claim 2, wherein said particulate material includes detergent powder.
Claim 5
Dependent Claim
14 words
The method defined in claim 3, wherein said liquid material is viscous or sticky.
Claim 6
Dependent Claim
34 words
The method defined in claim 1, wherein said materials are continually first deposited separately upon substantially horizontal vertically adjacent surfaces rotating about a vertical axis, the liquid material being disposed at the lower level.
Claim 7
Dependent Claim
20 words
The method defined in claim 5 wherein said surfaces are rotated at the same speed and in the same direction.
Claim 8
Independent Claim
68 words
A method of mixing relatively dry particulate material with liquid material which comprises providing and centrifugally spreading at different levels continuous separate substantially coaxial annular layers or layer-like formations of a first particulate material and said liquid material directed into intersecting relation, and including the further step of introducing at another level a second centrifugally spread particulate material into said annular first particulate material and liquid material mixture.
Claim 9
Independent Claim
68 words
A method of mixing relatively dry particulate material with liquid material which comprises providing and centrifugally spreading at different levels continuous separate substantially coaxial annular layers or layer-like formations of a first particulate material and said liquid material directed into intersecting relation, and including the further step of introducing at another level a second centrifugally spread particulate material into said annular first particulate material and liquid material mixture.
References Cited (Backward Citations)
US1658938A
Cited
US833790A
Cited
US872729A
Cited
US1369248A
Cited
US1406791A
Cited
US2581414A
Cited
US2862511A
Cited
US3400915A
Cited
US3254877A
Cited
US3271194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-19 | 1980-04-19 | 1980-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-19 | 1984-04-19 | 1984-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-19 | 1988-04-19 | 1988-10-19 | $7700.00 | Window Closed / Lapsed |