US3604942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater generator
Assignee: Individual
•
Filing: 1970-05-11
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Granted: 1971-09-14
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Expires: 1990-05-11
Abstract
Abstract An underwater generator having an outside sealed stator mounted to a concrete base which, in turn, is anchored in a river bottom; a rotor rotatably carried by said stator by a plurality of bearing races, and a plurality of radially extending arms, each arm pivotally carrying a paddle, each paddle having a geometry operable for opening with water current and closing against water current.
Inventors
- 👤 Curtis A Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:01
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/18; H02K7/1807; H02K7/1823; F; F03; F03B; F03B17/00; F03B17/06; F03B17/062; F03B17/065; F05; F05B; F05B2240/00; F05B2240/20; F05B2240/21; F05B2240/211; F05B2260/00; F05B2260/70; F05B2260/72; Y; Y02; Y02E; Y02E10/00; Y02E10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
An underwater generator comprising: an outside sealed stator adapted for mounting to a concrete base anchored in a river bottom; a rotor rotatably carried by said stator by a plurality of bearing races; a plurality of radially extended arms coupled to said rotor; and a paddle pivotally carried by each of said arms, said paddle having a geometry operable for opening with water current and closing against water current.
Claim 2
Dependent Claim
69 words
An underwater generator comprising: an outside sealed stator adapted for mounting to a concrete base anchored in a river bottom; a rotor rotatably carried by said stator by a plurality of bearing races; a plurality of radially extended arms coupled to said rotor; and a paddle pivotally carried by each of said arms, said paddle having a geometry operable for opening with water current and closing against water current.
References Cited (Backward Citations)
US833361A
Cited
US3209156A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |