US3940867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guidance valve for fish pumps
Assignee: Individual
•
Filing: 1974-07-16
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Granted: 1976-03-02
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Expires: 1994-07-16
Abstract
Abstract An intake guidance valve for connection to an intake opening of a fish pump having a frusto-concial shield open at its small end and at its base. A conical deflector is mounted on and axially of the shield in a plurality of vanes which extend at an end beyond the base of the shield and at their other ends towards but short of the apex of the deflector so as to provide a plurality of upwardly tapering guidance passages. An annular flange projects radially from the base of the deflector so that water and fish are drawn radially into the guidance passages.
Inventors
- 👤 Matthew John Sikich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:52
CPC Classifications
A; A01; A01K; A01K79/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
133 words
An intake guidance valve for fish pump apparatus having a centrifugal pump comprising: a. a substantially frusto-conical shield open at each end connectable at its smaller end to the intake of the pump apparatus, b. a substantially conical deflector disposed in and co-axially of the shield and spaced from walls of the shield so as to provide a tapering annular passage, the deflector extending outwards of the open end of the shield, c. an annular flange extending radially from the base of the deflector and spaced from the base of the shield, d. guidance vanes disposed between the walls of the deflector and the shield dividing the annular passage into a plurality of upwardly tapering guidance passages, said vanes extending from the annular flange towards, but short of the apex of the deflector.
Claim 2
Dependent Claim
133 words
An intake guidance valve for fish pump apparatus having a centrifugal pump comprising: a. a substantially frusto-conical shield open at each end connectable at its smaller end to the intake of the pump apparatus, b. a substantially conical deflector disposed in and co-axially of the shield and spaced from walls of the shield so as to provide a tapering annular passage, the deflector extending outwards of the open end of the shield, c. an annular flange extending radially from the base of the deflector and spaced from the base of the shield, d. guidance vanes disposed between the walls of the deflector and the shield dividing the annular passage into a plurality of upwardly tapering guidance passages, said vanes extending from the annular flange towards, but short of the apex of the deflector.
Claim 3
Dependent Claim
28 words
A valve as claimed in claim 1 in which the annular flange is a peripheral portion of a circular base plate, secured to the base of the deflector.
Claim 4
Dependent Claim
31 words
A valve as claimed in claim 1 in which the length of the vane is such that the guidance passages terminate in discharge openings having substantially the same breadth and depth.
Claim 5
Dependent Claim
39 words
A valve as claimed in claim 1 in which the ends of the vanes projecting from the shield are spaced apart a distance substantially two thirds the length of the largest fish which can pass through the guidance passages.
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) | 1979-03-02 | 1979-09-01 | 1980-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-02 | 1983-09-01 | 1984-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-02 | 1987-09-01 | 1988-03-02 | $7700.00 | Window Closed / Lapsed |