Patent US3620512A successfully refreshed from Google Patents.
US3620512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerating apparatus
Assignee: Aqseptence Group GmbH
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Filing: 1970-03-25
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Granted: 1971-11-16
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Expires: 1990-03-25
Abstract
Abstract Aerating apparatus for aerating liquids such as sewage sludges, is improved by providing a rotor which moves in a path on the surface of the liquid and which moves the liquid in a direction at an angle of between 90* and 180* with respect to the path of motion of the frame. Alternatively, a device of this type is improved by providing a rotor which moves in a path on the surface of the liquid the rotor axis of which is inclined at an angle of up to 90* with respect to the horizontal.
Inventors
- 👤 Josef Muskat
- 👤 Dieter Klump
- 👤 Jurgen Sieckmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:14
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/14; C02F3/18; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/234; B01F23/2342; B01F33/00; B01F33/50; B01F33/503; C02F3/16; B01F27/00; B01F27/05; B01F27/11; B01F27/112; B01F27/60; B01F27/61; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
15 words
Apparatus according to claim 1 wherein the axis of rotation of said rotor is horizontal.
Claim 2
Dependent Claim
35 words
Apparatus according to claim 2 wherein the horizontal axis of said rotor is at an angle of between 90* and 180* with respect to the direction of motion of said frame in said predetermined path.
Claim 3
Dependent Claim
25 words
Apparatus according to claim 2 including baffle means secured to said frame extending into the liquid and positioned to deflect liquid motivated by said rotor.
Claim 4
Dependent Claim
25 words
Apparatus according to claim 1 wherein the axis of said rotor is inclined at an angle of up to 90* with respect to the horizontal.
Claim 5
Dependent Claim
25 words
Apparatus according to claim 5 wherein said directing means comprise baffle means interfering with the rotational symmetry of the flow cross section of said rotor.
Claim 6
Dependent Claim
15 words
Apparatus according to claim 1 including second baffle means to direct said horizontal flow downwardly.
Claim 7
Dependent Claim
32 words
Apparatus according to claim 1 including a circular pontoon supporting said rotor within the periphery of the pontoon, said pontoon including at least one opening for a horizontal flow of said fluid.
Claim 8
Dependent Claim
11 words
Apparatus according to claim 1 wherein said predetermined path is helical.
Claim 9
Dependent Claim
34 words
Apparatus according to claim 1 including a secondary clarifier tank defined by a vertical peripheral wall in the liquid and being open at the bottom, said predetermined path being located outside of said wall.
Claim 10
Dependent Claim
28 words
Apparatus according to claim 10 wherein said rotor is secured to said wall and wherein said tank is secured for rotation with said rotor about a stationary support.
Claim 11
Dependent Claim
32 words
Apparatus according to claim 11 wherein said tank is cylindrical said support being located centrally of said tank, said tank including means to convey sludge outwardly from said support toward said rotor.
Claim 12
Dependent Claim
83 words
Apparatus for surface aeration of a body of liquid comprising in combination: a frame adapted to be floated in a liquid; a bladed aeration rotor rotatably mounted in said frame with its axis of rotation inclined at an angle of substantially less than 90* with respect to the horizontal and having radial blades extending into the liquid; means for rotating the rotor; and guide means secured to said frame to guide the frame for motion in a predetermined path on the liquid surface.
Claim 13
Dependent Claim
22 words
Apparatus according to claim 13 including means secured to said frame for guiding liquid moved by said rotor into a horizontal flow.
Claim 14
Dependent Claim
43 words
Apparatus according to claim 14 including means secured to said frame to direct at least a portion of said horizontal flow at an angle of between 90* and 180* with respect to the direction of motion of said frame along said predetermined path.
Claim 15
Dependent Claim
127 words
Apparatus for surface aeration of a body of liquid comprising in combination: a frame adapted to be floated in a liquid; a bladed aeration rotor rotatably mounted in said frame with its axis oF rotation inclined at an angle of up to 90* with respect to the horizontal and having radial blades extending into the liquid; means for rotating the rotor; guide means secured to said frame to guide the frame for motion in a predetermined path on the liquid surface; and means secured to said frame to direct at least a major portion of said horizontal flow at an angle in a horizontal plane of more than 90* and less than 180* with respect to the direction of motion of said frame along said predetermined path.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |