Patent US4252445A successfully refreshed from Google Patents.
US4252445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid mixing system
Assignee: 3 U PARTNERS
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Filing: 1979-04-16
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Granted: 1981-02-24
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Expires: 1999-04-16
Abstract
Abstract A system for mixing fluids such as drilling fluids and which comprises an elongated container having a cylindrical shaped bottom. A short suction conduit has an inlet in fluid communication with the interior of the container at about its central axis for withdrawing fluid from the container. An exterior conduit extends along the length of the container and has a plurality of spaced apart injection conduits extending into the container for injecting fluid therein in a direction to cause the fluid to swirl around the central axis of the container. A pump has its inlet coupled to the suction conduit and its outlet coupled to one end of the exterior conduit to cause the fluid in the container to spiral inward for flow through the suction conduit and to be pumped into the exterior conduit for injection through the injection conduits back into the container. Means is provided for preventing the fluid from swirling in the suction conduit.
Inventors
- 👤 Gene E. Underwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:22
CPC Classifications
B; B01; B01F; B01F25/00; B01F25/20; B01F25/21; B01F2025/91; B01F2025/914
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
148 words
A fluid mixing system comprising: a container defined by two spaced apart generally vertical end walls and side wall means extending between said end walls, the distance between said end walls defining the length of said container, injection means for injecting fluid into said container at a plurality of spaced apart positions along its length and in a direction to cause the fluid to swirl around a generally horizontal axis extending along the length of said container, conduit means having an open end in fluid communication with the interior of said container, said open end of said conduit means being located near one of said end walls and near said axis for the flow of fluid from said container into said conduit means, and means for withdrawing fluid from said conduit means and for flowing said withdrawn fluid into said injection means for injection back into said container.
Claim 2
Dependent Claim
148 words
A fluid mixing system comprising: a container defined by two spaced apart generally vertical end walls and side wall means extending between said end walls, the distance between said end walls defining the length of said container, injection means for injecting fluid into said container at a plurality of spaced apart positions along its length and in a direction to cause the fluid to swirl around a generally horizontal axis extending along the length of said container, conduit means having an open end in fluid communication with the interior of said container, said open end of said conduit means being located near one of said end walls and near said axis for the flow of fluid from said container into said conduit means, and means for withdrawing fluid from said conduit means and for flowing said withdrawn fluid into said injection means for injection back into said container.
Claim 3
Dependent Claim
155 words
A fluid mixing system, comprising: a container defined by two spaced apart end walls and side wall means extending between said end walls, the distance between said end walls defining the length of said container, injection means for injecting fluid into said container at a plurality of spaced apart positions along its length and in a direction to cause the fluid to swirl around an axis extending along the length of said container, conduit means extending through one of said end end walls and having an open end located near said one end wall and near said axis for the flow of fluid from said container into said conduit means, means for withdrawing fluid from said conduit means and for flowing said withdrawn fluid into said injection means for injection back into said container, and means located near said open end of said conduit means for preventing the fluid from swirling in said conduit means.
Claim 4
Dependent Claim
155 words
A fluid mixing system, comprising: a container defined by two spaced apart end walls and side wall means extending between said end walls, the distance between said end walls defining the length of said container, injection means for injecting fluid into said container at a plurality of spaced apart positions along its length and in a direction to cause the fluid to swirl around an axis extending along the length of said container, conduit means extending through one of said end end walls and having an open end located near said one end wall and near said axis for the flow of fluid from said container into said conduit means, means for withdrawing fluid from said conduit means and for flowing said withdrawn fluid into said injection means for injection back into said container, and means located near said open end of said conduit means for preventing the fluid from swirling in said conduit means.
Claim 5
Dependent Claim
28 words
The fluid mixing system of claim 1 comprising: means located near said open end of said conduit means for preventing the fluid from swirling in said conduit means.
Claim 6
Dependent Claim
41 words
The fluid mixing system of claims 3 or 2 wherein: said means located near said open end of said conduit means for preventing the fluid from swirling in said conduit means is located in said open end of said conduit means.
Claim 7
Dependent Claim
37 words
The fluid mixing system of claims 3 or 2 wherein: said means located near said open end of said conduit means for preventing the fluid from swirling in said conduit means is coupled to said conduit means.
Claim 8
Dependent Claim
22 words
The fluid mixing system of claim 2, wherein: said open end of said conduit means faces the other of said end walls.
Claim 9
Dependent Claim
35 words
The fluid mixing system of claims 3 or 2, comprising: means having inlet means on fluid communication with the interior of said container near said axis for removing air from said container near said axis.
Claim 10
Dependent Claim
22 words
The fluid mixing system of claim 1, wherein: said open end of said conduit means faces the other of said end walls.
Claim 11
Dependent Claim
139 words
A fluid mixing system, comprising: a container defined by two spaced apart end walls and side wall means extending between said end walls, injection means for injecting fluid into said container in a direction to cause the fluid to swirl around an axis extending between said end walls, conduit means having an open end in fluid communication with the interior of said container, said open end of said conduit means being located near one of said end walls and near said axis for the flow of fluid from said container into said conduit means, means for withdrawing fluid from said conduit means and for flowing said withdrawn fluid into said injection means for injection back into said container, and means located near said open end of said conduit means for preventing the fluid from swirling in said conduit means.
Claim 12
Dependent Claim
139 words
A fluid mixing system, comprising: a container defined by two spaced apart end walls and side wall means extending between said end walls, injection means for injecting fluid into said container in a direction to cause the fluid to swirl around an axis extending between said end walls, conduit means having an open end in fluid communication with the interior of said container, said open end of said conduit means being located near one of said end walls and near said axis for the flow of fluid from said container into said conduit means, means for withdrawing fluid from said conduit means and for flowing said withdrawn fluid into said injection means for injection back into said container, and means located near said open end of said conduit means for preventing the fluid from swirling in said conduit means.
Claim 13
Dependent Claim
38 words
The fluid mixing system of claim 9, wherein: said injection means is located to inject fluid into said container in a direction to cause the fluid to swirl around a generally horizontal axis extending between said end walls.
Claim 14
Dependent Claim
41 words
The fluid mixing system of claims 9 or 10, wherein: said means located near said open end of said conduit means for preventing the fluid from swirling in said conduit means is located in said open end of said conduit means.
Claim 15
Dependent Claim
37 words
The fluid mixing system of claims 9 or 10, wherein: said means located near said open end of said conduit means for preventing the fluid from swirling in said conduit means is coupled to said conduit means.
Claim 16
Dependent Claim
33 words
The fluid mixing system of claim 9, comprising: means having inlet means in fluid communication with the interior of said container near said axis for removing air from said container near said axis.
Claim 17
Dependent Claim
125 words
A fluid mixing system comprising: a container defined by two spaced apart end walls and side wall means and bottom wall means extending between said end walls, injection means for injecting fluid into said container in a direction to cause the fluid to swirl around a generally horizontal axis extending between said end walls, conduit means having an open end in fluid communication with the interior of said container, said open end of said conduit means being located near one of said end walls and near said axis for the flow of fluid from said container into said conduit means, and means for withdrawing fluid from said conduit means and for flowing said withdrawn fluid into said injection means for injection back into said container.
Claim 18
Dependent Claim
125 words
A fluid mixing system comprising: a container defined by two spaced apart end walls and side wall means and bottom wall means extending between said end walls, injection means for injecting fluid into said container in a direction to cause the fluid to swirl around a generally horizontal axis extending between said end walls, conduit means having an open end in fluid communication with the interior of said container, said open end of said conduit means being located near one of said end walls and near said axis for the flow of fluid from said container into said conduit means, and means for withdrawing fluid from said conduit means and for flowing said withdrawn fluid into said injection means for injection back into said container.
Claim 19
Dependent Claim
46 words
The fluid mixing system of claim 14, wherein: said open end of said conduit means is located near said one end wall at a generally central position relative to said side wall means and said bottom wall means and faces the other of said end walls.
Claim 20
Dependent Claim
24 words
The fluid mixing system of claim 15 wherein said injection means is located to inject fluid into said container toward said bottom wall means.
Claim 21
Dependent Claim
24 words
The fluid mixing system of claim 14 wherein said injection means is located to inject fluid into said container toward said bottom wall means.
Claim 22
Dependent Claim
32 words
The fluid mixing system of claims 14, 15, 17 or 16, comprising: means located near said open end of said conduit means for preventing the fluid from swirling in said conduit means.
Claim 23
Dependent Claim
32 words
The fluid mixing system of claims 14, 15, 17 or 16, comprising: means located in said open end of said conduit means for preventing the fluid from swirling in said conduit means.
Claim 24
Dependent Claim
38 words
The fluid mixing system of claims 14, 15, 17 or 16, comprising: means located near said open end of said conduit means and coupled to said conduit means for preventing the fluid from swirling in said conduit means.
Claim 25
Dependent Claim
54 words
The fluid mixing system of claim 14, comprising: means located near said open end of said conduit means for preventing the fluid from swirling in said conduit means, and means having inlet means in fluid communication with the interior of said container near the axis for removing air from said container near said axis.
References Cited (Backward Citations)
US626950A
Cited
US1436700A
Cited
US2462034A
Cited
US2469825A
Cited
US2633383A
Cited
US2997373A
Cited
US3491949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-24 | 1984-08-25 | 1985-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-24 | 1988-08-25 | 1989-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-24 | 1992-08-25 | 1993-02-24 | $7700.00 | Window Closed / Lapsed |