US3765656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerating circulators
Assignee: Norm AMC AG
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Filing: 1972-02-15
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Granted: 1973-10-16
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Expires: 1992-02-15
Abstract
Abstract A method of and device for minimizing the formation of ice and/or the deposition of dirt on an exposed upper surface of an aerating circulator. The circulator has a portion thereof disposed beneath the surface to be aerated and another portion, including an exposed upper surface, which extends above the surface of the liquid. A rotor of the circulator is rotated to deliver the fluid by centrifugal force through radially extending supply ducts. The ducts are curved continuously from a submerged, substantially vertically disposed inlet to a substantially horizontally disposed outlet substantially at the surface of the liquid to be aerated. The method comprises diverting a portion of the liquid in the ducts by means of branch conduits and delivering the diverted liquid to the topside of the exposed upper surface.
Inventors
- 👤 K Tofaute
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:09
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/14; C02F3/16; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/234; B01F23/2342; B01F23/23421; B01F23/234211; F; F04; F04D; F04D29/00; F04D29/18; F04D29/22; F04D29/2261; F04D7/00; F04D7/02; F04D7/04; F04D7/045; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
137 words
A method of minimizing the formation of ice and/or the deposition of dirt on an exposed upper surface of an aerating circulator device of the type having a substantially vertically disposed drive shaft with a portion of the circulator disposed beneath the surface of a liquid to be aerated and another portion, including said exposed upper surface, extending above the surface of said liquid, said circulator being rotated to effect centrifugal ejection of fluid through radially extending duct means, each of said ducts having a substantially vertically disposed inlet and a substantially horizontally extending outlet positioned substantially at the surface of the liquid to be aerated, said method comprising the steps of a. diverting a portion of the liquid flowing through said ducts, b. and delivering the diverted liquid to the topside of said exposed upper surface.
Claim 2
Independent Claim
137 words
A method of minimizing the formation of ice and/or the deposition of dirt on an exposed upper surface of an aerating circulator device of the type having a substantially vertically disposed drive shaft with a portion of the circulator disposed beneath the surface of a liquid to be aerated and another portion, including said exposed upper surface, extending above the surface of said liquid, said circulator being rotated to effect centrifugal ejection of fluid through radially extending duct means, each of said ducts having a substantially vertically disposed inlet and a substantially horizontally extending outlet positioned substantially at the surface of the liquid to be aerated, said method comprising the steps of a. diverting a portion of the liquid flowing through said ducts, b. and delivering the diverted liquid to the topside of said exposed upper surface.
Claim 3
Dependent Claim
191 words
An aerating circulator comprising a. a rotor having a substantially vertical axis with said rotor being adapted to be rotated to deliver a fluid by centrifugal force, b. a plurality of radially extending supply duct means in said rotor to permit radial flow of said liquid to be aerated, c. each of said radially extending supply duct means having a substantially vertically disposed inlet at an open bottom of said rotor and a substantially horizontally extending outlet positioned substantially at the surface of the liquid to be aerated, d. said radially extending supply duct means having upper and lower surfaces which are curved continuously from said inlet to said outlet, e. said aerating circulator having an exposed upper wall surface disposed transversely to the vertical axis of said aerating circulator and positioned above the surface of said liquid to be aerated, f. each of said supply duct means being provided with branch conduit means which extends through the curving upper wall of said duct means to deliver fluid atop said exposed upper wall surface thereby minimizing the formation of ice and/or the deposition of dirt on said exposed upper wall surface.
Claim 4
Dependent Claim
191 words
An aerating circulator comprising a. a rotor having a substantially vertical axis with said rotor being adapted to be rotated to deliver a fluid by centrifugal force, b. a plurality of radially extending supply duct means in said rotor to permit radial flow of said liquid to be aerated, c. each of said radially extending supply duct means having a substantially vertically disposed inlet at an open bottom of said rotor and a substantially horizontally extending outlet positioned substantially at the surface of the liquid to be aerated, d. said radially extending supply duct means having upper and lower surfaces which are curved continuously from said inlet to said outlet, e. said aerating circulator having an exposed upper wall surface disposed transversely to the vertical axis of said aerating circulator and positioned above the surface of said liquid to be aerated, f. each of said supply duct means being provided with branch conduit means which extends through the curving upper wall of said duct means to deliver fluid atop said exposed upper wall surface thereby minimizing the formation of ice and/or the deposition of dirt on said exposed upper wall surface.
Claim 5
Dependent Claim
24 words
A circulator as claimed in claim 2, wherein each branch conduit means has an outlet which is provided with a covering and distribution cap.
Claim 6
Dependent Claim
25 words
A circulator as claimed in claim 3, wherein the covering caps are adapted to direct liquid to flow over said surface in a predetermined direction.
Claim 7
Dependent Claim
22 words
A circulator as claimed in claim 2, wherein the conduit means is formed from polyvinylchloride, glass-fibre reinforced synthetic resin or stainless steel.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |