US4522502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing and feeding apparatus
Assignee: Stranco Inc
•
Filing: 1983-10-06
•
Granted: 1985-06-11
•
Expires: 2003-10-06
Abstract
Abstract The mixing and feeding apparatus comprises a frame on which is mounted a polymer delivering pump and a water delivering mechanism. The frame also supports a mixer which includes a vessel for receiving the polymer and the water. The impeller mechanism includes four fins at right angles rotatably mounted in the vessel for mixing the water and the concentrated polymer into low shear, high torque conditions.
Inventors
- 👤 Carl L. Brazelton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:55
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/686; B; B01; B01F; B01F27/00; B01F27/80; B01F33/00; B01F33/80
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
164 words
Mixing and feeding apparatus for receiving polymer and water and for activating and diluting the polymer, comprising a frame, a vessel mounted on said frame and defining a substantially cylindrical chamber therein, said chamber having a cylindrical axis and a given cross sectional area through the cylindrical axis, polymer inlet means for carrying the polymer to said chamber, means mounted on said frame for accurately adjusting the delivery rate of the polymer into said chamber, water inlet means for carrying the water to said chamber, means mounted on said frame for controlling the rate of water flow into said chamber, outlet means for carrying the activated and diluted polymer away from said vessel, an impeller mechanism mounted in said chamber for rotation about the cylindrical axis thereof for mixing the polymer and the water, said impeller mechanism including a plurality of fins having a combined surface area at least one-half the cross sectional area of the chamber, and means for rotating said impeller mechanism.
Claim 2
Dependent Claim
164 words
Mixing and feeding apparatus for receiving polymer and water and for activating and diluting the polymer, comprising a frame, a vessel mounted on said frame and defining a substantially cylindrical chamber therein, said chamber having a cylindrical axis and a given cross sectional area through the cylindrical axis, polymer inlet means for carrying the polymer to said chamber, means mounted on said frame for accurately adjusting the delivery rate of the polymer into said chamber, water inlet means for carrying the water to said chamber, means mounted on said frame for controlling the rate of water flow into said chamber, outlet means for carrying the activated and diluted polymer away from said vessel, an impeller mechanism mounted in said chamber for rotation about the cylindrical axis thereof for mixing the polymer and the water, said impeller mechanism including a plurality of fins having a combined surface area at least one-half the cross sectional area of the chamber, and means for rotating said impeller mechanism.
Claim 3
Dependent Claim
34 words
The mixing and feeding apparatus of claim 1, wherein said polymer inlet means and said water inlet means are respectively two separate passageways that separately introduce the polymer and the water into said chamber.
Claim 4
Dependent Claim
53 words
The mixing and feeding apparatus of claim 2, and further comprising a check valve communicating with the passageway associated with said polymer inlet means to permit the polymer to flow into said chamber but to prevent either the polymer or the water from flowing out of said chamber through said polymer inlet means.
Claim 5
Dependent Claim
43 words
The mixing and feeding apparatus of claim 1, wherein said polymer inlet means and said water inlet means merge into a common passageway before communicating with said chamber, the polymer and the water being jointly introduced into said chamber through said common passageway.
Claim 6
Dependent Claim
28 words
The mixing and feeding apparatus of claim 4, and further comprising a nozzle communicating with said common passageway for introducing the polymer and the water into said chamber.
Claim 7
Dependent Claim
39 words
The mixing and feeding apparatus of claim 1, wherein the axis of rotation of said impeller is vertical, said polymer inlet means and said water inlet means being constructed and arranged to admit the polymer and the water vertically.
Claim 8
Dependent Claim
34 words
The mixing and feeding apparatus of claim 1, wherein said polymer inlet means and said water inlet means are at the bottom of said chamber and said outlet means is at the top thereof.
Claim 9
Dependent Claim
40 words
The mixing and feeding apparatus of claim 1, wherein said vessel includes a cylindrical barrel and top and bottom walls and means extending through said top and bottom walls for holding them in tight contact with said barrel disposed therebetween.
Claim 10
Dependent Claim
13 words
The mixing and feeding apparatus of claim 8, wherein said barrel is transparent.
Claim 11
Dependent Claim
24 words
The mixing and feeding apparatus of claim 8, wherein said polymer inlet means and said water inlet means include passageways in said bottom wall.
Claim 12
Dependent Claim
13 words
The mixing and feeding apparatus of claim 10, wherein said passageways are colinear.
Claim 13
Dependent Claim
27 words
The mixing and feeding apparatus of claim 10, and further comprising nozzle means attached to said bottom wall and having an outlet port communicating with said passageways.
Claim 14
Dependent Claim
19 words
The mixing and feeding apparatus of claim 8, wherein said outlet means includes a passageway in said top wall.
Claim 15
Dependent Claim
22 words
The mixing and feeding apparatus of claim 1, wherein said impeller mechanism includes four fins and end caps on the ends thereof.
Claim 16
Dependent Claim
21 words
The mixing and feeding apparatus of claim 14, wherein said fins are arranged such that adjacent fins are at right angles.
Claim 17
Dependent Claim
26 words
The mixing and feeding apparatus of claim 1, wherein each fin is about 75% of the height of said chamber and 45% of the width thereof.
Claim 18
Dependent Claim
31 words
The mixing and feeding apparatus of claim 1, and further comprising nozzle means being a tube having a slit-like exit port, the liquids entering said chamber being oriented in a sheet.
Claim 19
Dependent Claim
23 words
The mixing and feeding apparatus of claim 1, wherein the speed of said impeller mechanism is on the order of about 600 rpm.
Claim 20
Dependent Claim
22 words
The mixing and feeding apparatus of claim 1, and further comprising pump means for delivering the polymer to said polymer inlet means.
Claim 21
Dependent Claim
16 words
The mixing and feeding apparatus of claim 19, wherein said pump means pulsatingly delivers the polymer.
Claim 22
Dependent Claim
25 words
The mixing and feeding apparatus of claim 1, and further comprising a plurality of back mixing vanes on said vessel and located in said chamber.
Claim 23
Dependent Claim
23 words
The mixing and feeding apparatus of claim 21, wherein said back mixing vanes are located midway between the ends of said cylindrical chamber.
Claim 24
Dependent Claim
40 words
The mixing and feeding apparatus of claim 1, wherein said impeller mechanism includes a shaft located along the cylindrical axis of said chamber, each of said fins being rectangular and unapertured, said fins being spaced radially outwardly from said shaft.
Claim 25
Dependent Claim
64 words
The mixing and feeding apparatus of claim 1, wherein said means for adjusting the delivery rate of the polymer is capable of setting the rate within the range of 0.02 gallon per hour and one gallon per hour, said means for adjusting the rate of water flow being capable of selecting the rate within the range of zero to one hundred gallons per hour.
Claim 26
Dependent Claim
135 words
Mixing and feeding apparatus for receiving polymer and water and for activating and diluting the polymer, comprising a vessel defining a substantially cylindrical chamber therein, said chamber having a cylindrical axis, polymer inlet means for carrying the polymer to said chamber, water inlet means for carrying the water to said chamber, outlet means for carrying the activated and diluted polymer away from said vessel, an impeller mechanism mounted in said chamber for rotation about the cylindrical axis thereof for mixing the polymer and the water, said impeller mechanism including a plurality of fins, said impeller mechanism being located immediately adjacent to said polymer inlet means, means for rotating said impeller mechanism, and nozzle means being a tube having a slit-like exit port, the polymer and the water entering said chamber being oriented in a sheet.
Claim 27
Dependent Claim
135 words
Mixing and feeding apparatus for receiving polymer and water and for activating and diluting the polymer, comprising a vessel defining a substantially cylindrical chamber therein, said chamber having a cylindrical axis, polymer inlet means for carrying the polymer to said chamber, water inlet means for carrying the water to said chamber, outlet means for carrying the activated and diluted polymer away from said vessel, an impeller mechanism mounted in said chamber for rotation about the cylindrical axis thereof for mixing the polymer and the water, said impeller mechanism including a plurality of fins, said impeller mechanism being located immediately adjacent to said polymer inlet means, means for rotating said impeller mechanism, and nozzle means being a tube having a slit-like exit port, the polymer and the water entering said chamber being oriented in a sheet.
Claim 28
Dependent Claim
18 words
The mixing and feeding apparatus of claim 25, wherein said water inlet means communicates directly with said chamber.
Claim 29
Dependent Claim
32 words
The mixing and feeding apparatus of claim 25, wherein said water inlet means merges with said polymer inlet means so that the polymer and the water are jointly introduced into said chamber.
Claim 30
Dependent Claim
27 words
The mixing and feeding apparatus of claim 27, wherein the direction of elongation of said slit is parallel to the axis of rotation of said impeller means.
Claim 31
Dependent Claim
34 words
The mixing and feeding apparatus of claim 25, wherein said polymer inlet means and said water inlet means are at the bottom of said chamber and said outlet means is at the top thereof.
Claim 32
Dependent Claim
22 words
The mixing and feeding apparatus of claim 25, wherein said impeller mechanism includes four fins and end caps on the ends thereof.
Claim 33
Dependent Claim
21 words
The mixing and feeding apparatus of claim 30, wherein said fins are arranged such that adjacent fins are at right angles.
Claim 34
Dependent Claim
27 words
The mixing and feeding apparatus of claim 25, wherein the speed of the edges of said fins is on the order of about 110 inches per second.
Claim 35
Dependent Claim
129 words
Mixing and feeding apparatus for receiving polymer and water and for activating and diluting the polymer, comprising a vessel defining a substantially cylindrical chamber therein, said chamber having a cylindrical axis, polymer inlet means for carrying the polymer to said chamber, pump means for pulsatingly delivering the polymer to said polymer inlet means, water inlet means for carrying the water to said chamber, outlet means for carrying the activated and diluted polymer away from said vessel, an impeller mechanism mounted in said chamber for rotation about the cylindrical axis thereof, means for rotating said impeller mechanism, and means for continuously moving water through said water inlet means and into the chamber for mixing therein and thereby causing continuous delivery of the activated and diluted polymer from said outlet means.
Claim 36
Dependent Claim
129 words
Mixing and feeding apparatus for receiving polymer and water and for activating and diluting the polymer, comprising a vessel defining a substantially cylindrical chamber therein, said chamber having a cylindrical axis, polymer inlet means for carrying the polymer to said chamber, pump means for pulsatingly delivering the polymer to said polymer inlet means, water inlet means for carrying the water to said chamber, outlet means for carrying the activated and diluted polymer away from said vessel, an impeller mechanism mounted in said chamber for rotation about the cylindrical axis thereof, means for rotating said impeller mechanism, and means for continuously moving water through said water inlet means and into the chamber for mixing therein and thereby causing continuous delivery of the activated and diluted polymer from said outlet means.
Claim 37
Dependent Claim
74 words
The mixing and feeding apparatus of claim 33, and further comprising a frame for said vessel, first means mounted on said frame for adjusting the rate of flow of the polymer into said chamber and second means mounted on said frame for adjusting the rate of flow of the water into said chamber, thereby also adjusting the rate of flow of the activated and diluted polymer out of said chamber through said outlet means.
Claim 38
Dependent Claim
34 words
The mixing and feeding apparatus of claim 33, wherein said polymer inlet means and said water inlet means are at the bottom of said chamber and said outlet means is at the top thereof.
Claim 39
Dependent Claim
34 words
The mixing and feeding apparatus of claim 33, wherein said polymer inlet means and said water inlet means are respectively two separate passageways that separately introduce the polymer and the water into said chamber.
Claim 40
Dependent Claim
43 words
The mixing and feeding apparatus of claim 33, wherein said polymer inlet means and said water inlet means merge into a common passageway before communicating with said chamber, the polymer and the water being jointly introduced into said chamber through said common passageway.
Claim 41
Dependent Claim
36 words
The mixing and feeding apparatus of claim 33, wherein the axis of rotation is vertical, said polymer inlet means and said water inlet means being constructed and arranged to admit the polymer and the water vertically.
Claim 42
Dependent Claim
49 words
The mixing and feeding apparatus of claim 33, and further comprising a check valve communicating with said polymer inlet means to permit the polymer to flow into said chamber but to prevent either the polymer or the water from flowing out of said chamber through said polymer inlet means.
References Cited (Backward Citations)
US3128995A
Cited
US2008684A
Cited
US2503228A
Cited
US2651582A
Cited
US3186803A
Cited
US3322507A
Cited
US3434804A
Cited
US3397646A
Cited
US3508882A
Cited
US3559959A
Cited
US3770250A
Cited
US3624019A
Cited
US3765655A
Cited
US3807701A
Cited
US3909207A
Cited
US4057223A
Cited
US4125574A
Cited
US4217145A
Cited
US4190617A
Cited
US4218147A
Cited
US4233265A
Cited
US4365988A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-10 | 1988-12-10 | 1989-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-10 | 1992-12-10 | 1993-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-10 | 1996-12-10 | 1997-06-11 | $7700.00 | Window Closed / Lapsed |