Patent US3796414A successfully refreshed from Google Patents.
US3796414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerator
Assignee: FRESH FLO CORP
•
Filing: 1973-07-19
•
Granted: 1974-03-12
•
Expires: 1993-07-19
Abstract
Abstract An aerator which has a housing with a lower propeller means to draw in liquid and force it upward in the housing. There may be an upper propeller in the housing which draws air in and forces it downwardly to meet the upward flow of liquid. Another propeller having blades for producing radial flow causes the liquid or the liquid and air mixture to be thrown outwardly through an opening in the wall of such housing.
Inventors
- 👤 B Winton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:33
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/14; C02F3/16; C02F3/165; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/233; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
227 words
An aerator adapted for mounting partly within and partly without a body of liquid comprising: a. a housing having an intake for liquid at its lower end, and an outlet for liquid near its upper end positioned above a body of liquid, said outlet comprising a plurality of circumferentially extending axially spaced slots; b. a motor mounted on the upper end of said housing; c. a shaft rotatably mounted within said housing, extending axially thereof, and connected to and driven by said motor; d. lower propeller means on said shaft in said housing to draw liquid in through said intake and force flow the same upwardly within said housing; and e. an outward radial thrust propeller on said shaft in said housing having a collar attached to said shaft, axially extending blades attached to said collar and radially spaced outwardly from said collar to provide space between said collar and the radially inner edges of said blades for the axial passage therebetween of upwardly flowing liquid, said propeller being positioned radially opposite said outlet to force the upwardly flowing liquid radially out through said outlet into the atmosphere above a body of liquid, the axial length of said blades being substantially equal to the distance between the upper edge of the top one of said slots and the lower edge of the bottom one of said slots.
Claim 2
Dependent Claim
227 words
An aerator adapted for mounting partly within and partly without a body of liquid comprising: a. a housing having an intake for liquid at its lower end, and an outlet for liquid near its upper end positioned above a body of liquid, said outlet comprising a plurality of circumferentially extending axially spaced slots; b. a motor mounted on the upper end of said housing; c. a shaft rotatably mounted within said housing, extending axially thereof, and connected to and driven by said motor; d. lower propeller means on said shaft in said housing to draw liquid in through said intake and force flow the same upwardly within said housing; and e. an outward radial thrust propeller on said shaft in said housing having a collar attached to said shaft, axially extending blades attached to said collar and radially spaced outwardly from said collar to provide space between said collar and the radially inner edges of said blades for the axial passage therebetween of upwardly flowing liquid, said propeller being positioned radially opposite said outlet to force the upwardly flowing liquid radially out through said outlet into the atmosphere above a body of liquid, the axial length of said blades being substantially equal to the distance between the upper edge of the top one of said slots and the lower edge of the bottom one of said slots.
Claim 3
Dependent Claim
215 words
An aerator adapted for mounting partly within and partly without a body of liquid comprising: a. a housing having an intake for liquid at its lower end, and an outlet for air and liquid near its upper end positioned above a body of liquid; b. a motor mounted on the upper end of said housing; c. a shaft rotatably mounted within said housing, extending axially thereof, and connected to and driven by said motor; d. lower propeller means on said shaft in said housing to draw liquid in through said intake and force flow the same upwardly within said housing; e. upper air fan means in said housing on said shaft above said outlet to force air downwardly in said housing to meet the upward flow of liquid at said outlet; and f. an outward radial thrust propeller on said shaft in said housing having a collar attached to said shaft, vertically extending blades attached to said collar and radially spaced outwardly from said collar to provide space between said collar and said blades for axial passage therebetween of upwardly flowing liquid, said propeller being positioned radially opposite said outlet to force the upwardly flowing liquid admixed with the downwardly flowing air radially out through said outlet into the atmosphere above a body of liquid.
Claim 4
Dependent Claim
215 words
An aerator adapted for mounting partly within and partly without a body of liquid comprising: a. a housing having an intake for liquid at its lower end, and an outlet for air and liquid near its upper end positioned above a body of liquid; b. a motor mounted on the upper end of said housing; c. a shaft rotatably mounted within said housing, extending axially thereof, and connected to and driven by said motor; d. lower propeller means on said shaft in said housing to draw liquid in through said intake and force flow the same upwardly within said housing; e. upper air fan means in said housing on said shaft above said outlet to force air downwardly in said housing to meet the upward flow of liquid at said outlet; and f. an outward radial thrust propeller on said shaft in said housing having a collar attached to said shaft, vertically extending blades attached to said collar and radially spaced outwardly from said collar to provide space between said collar and said blades for axial passage therebetween of upwardly flowing liquid, said propeller being positioned radially opposite said outlet to force the upwardly flowing liquid admixed with the downwardly flowing air radially out through said outlet into the atmosphere above a body of liquid.
References Cited (Backward Citations)
US2165889A
Cited
US2174147A
Cited
US2601519A
Cited
US2641455A
Cited
US2802647A
Cited
US3053390A
Cited
US3086715A
Cited
US3333834A
Cited
US3497185A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |