US3635448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pool with vortex generator
Assignee: KURITZ WATER IND Ltd
•
Filing: 1969-06-11
•
Granted: 1972-01-18
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Expires: 1989-06-11
Abstract
Abstract A pit or hollow vessel formed in the bottom of a pond or pool with a rotor blade arrangement therein for generating a vortex in the pond or pool.
Inventors
- 👤 Hiroo Okada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:12
CPC Classifications
B; B44; B44C; B44C5/00; F; F21; F21W; F21W2121/00; F21W2131/00; F21W2131/40; F21W2131/401
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
47 words
A large pond with vortex generator for forming a vortex in a portion of the pond comprising a pond, a vortex-forming vessel provided at the bottom of said pond, and a rotary means in said vessel for rotating the water in said pond to generate a vortex.
Claim 2
Dependent Claim
47 words
A large pond with vortex generator for forming a vortex in a portion of the pond comprising a pond, a vortex-forming vessel provided at the bottom of said pond, and a rotary means in said vessel for rotating the water in said pond to generate a vortex.
Claim 3
Dependent Claim
20 words
A pond with vortex generator as defined in claim 1, wherein said vortex-forming vessel is shaped like an inverted cone.
Claim 4
Dependent Claim
60 words
A large pond with vortex generator for forming a vortex in a portion of the pond comprising a pond, a vortex-forming vessel at the bottom of said pond, said vortex-forming vessel having a plurality of holes made in the bottom thereof, and a rotary means in said vortex-forming vessel for rotating the water in said pond to create a vortex.
Claim 5
Dependent Claim
60 words
A large pond with vortex generator for forming a vortex in a portion of the pond comprising a pond, a vortex-forming vessel at the bottom of said pond, said vortex-forming vessel having a plurality of holes made in the bottom thereof, and a rotary means in said vortex-forming vessel for rotating the water in said pond to create a vortex.
Claim 6
Dependent Claim
20 words
A pond with vortex generator as defined in claim 3, wherein the vortex-forming vessel is shaped like an inverted cone.
References Cited (Backward Citations)
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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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |