Patent US3581543A successfully refreshed from Google Patents.
Patent US5525190A successfully refreshed from Google Patents.
US4142823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current power plant
Assignee: Individual
•
Filing: 1977-07-18
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Granted: 1979-03-06
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Expires: 1997-07-18
Abstract
Abstract A current power plant including a shaft mounted turbine wheel for employment in water current, a housing adjacent said impellar and to which the shaft extends, a ramp positioned on the upstream side of said impellar, a frame on which the turbine wheel is mounted, which frame means is mounted by rollers on a tract such that the impellar and frame may be rolled on the tracks inside the housing, whereafter doors are closed, and water around the turbine wheel may be pumped out to facilitate turbine repair.
Inventors
- 👤 James H. Nickell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:38
CPC Classifications
F; F03; F03B; F03B17/00; F03B17/06; F03B17/062; F03B17/063; Y; Y02; Y02E; Y02E10/00; Y02E10/20; Y10; Y10S; Y10S415/00; Y10S415/905; Y10S415/906
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
186 words
A water current power plant comprising: (a) frame means; (b) turbine means rotatably mounted on said frame means to be turned by said current; (c) said frame means being mounted upon track mounted wheel means; (d) track means upon which said wheel means rest and on which said wheel means may roll disposed transverse to current flow; (e) housing means positioned over a portion of said track means; (f) means for supplying motive force mechanically coupled to said turbine means to be driven thereby; (g) said housing means further including a door which may be closed after said frame, turbine and wheel means are inside said housing; (h) said track means further having a flange on its upper extremity; (i) said track mounted wheel means further including wheels mounted at an angle such that the lower side of said wheels extends beneath and within the span of said flange on either side thereof; (j) ramp means positioned in proximity to said turbine means for channeling current toward said turbine means; (k) sump pump means for removing water from said housing means after said door is closed.
Claim 2
Dependent Claim
186 words
A water current power plant comprising: (a) frame means; (b) turbine means rotatably mounted on said frame means to be turned by said current; (c) said frame means being mounted upon track mounted wheel means; (d) track means upon which said wheel means rest and on which said wheel means may roll disposed transverse to current flow; (e) housing means positioned over a portion of said track means; (f) means for supplying motive force mechanically coupled to said turbine means to be driven thereby; (g) said housing means further including a door which may be closed after said frame, turbine and wheel means are inside said housing; (h) said track means further having a flange on its upper extremity; (i) said track mounted wheel means further including wheels mounted at an angle such that the lower side of said wheels extends beneath and within the span of said flange on either side thereof; (j) ramp means positioned in proximity to said turbine means for channeling current toward said turbine means; (k) sump pump means for removing water from said housing means after said door is closed.
Claim 3
Dependent Claim
16 words
The power plant of claim 1 wherein said means for supplying motive force is a pump.
Claim 4
Dependent Claim
17 words
The power plant of claim 1 wherein said means for supplying motive force is an electrical generator.
Claim 5
Dependent Claim
28 words
The power plant of claim 1 wherein said turbine means is mechanically coupled to said means for supplying motive force by a belt, chain or shaft drive means.
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) | 1982-03-05 | 1982-09-04 | 1983-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-05 | 1986-09-04 | 1987-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-05 | 1990-09-04 | 1991-03-06 | $7700.00 | Window Closed / Lapsed |