US3827290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stream table study center
Assignee: Sheldon & Co E H
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Filing: 1973-03-06
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Granted: 1974-08-06
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Expires: 1993-03-06
Abstract
Abstract A portable stream table for simulating the effect of waves on a land mass and for measuring and recording the resulting erosion of the land mass.
Inventors
- 👤 A Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:58
CPC Classifications
G; G09; G09B; G09B23/00; G09B23/40; G09B23/06; G09B23/08; G09B23/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
158 words
Apparatus comprising: a tub for holding a land mass and water and including a bottom and first and second pairs of opposing side walls, at least one pair of said side walls being transparent, a measuring grid including a first plurality of equally spaced lines on at least one of said transparent side walls extending parallel to said bottom and a second plurality of equally spaced lines on said one side generally perpendicular to said first lines and intersecting therewith, said bottom being marked with a similar grid for measuring land movement, said tub defining a drain end and a water inlet end; drain means in the drain end of said tub for metering the outflow of water therefrom; water separation means receiving the drain water from said tub for separating the water from particulate matter; pump means communicating with said water separation means for recirculating the separated water into said tub at the water inlet end thereof.
Claim 2
Dependent Claim
158 words
Apparatus comprising: a tub for holding a land mass and water and including a bottom and first and second pairs of opposing side walls, at least one pair of said side walls being transparent, a measuring grid including a first plurality of equally spaced lines on at least one of said transparent side walls extending parallel to said bottom and a second plurality of equally spaced lines on said one side generally perpendicular to said first lines and intersecting therewith, said bottom being marked with a similar grid for measuring land movement, said tub defining a drain end and a water inlet end; drain means in the drain end of said tub for metering the outflow of water therefrom; water separation means receiving the drain water from said tub for separating the water from particulate matter; pump means communicating with said water separation means for recirculating the separated water into said tub at the water inlet end thereof.
Claim 3
Dependent Claim
114 words
The system of claim 1 further comprising a dam including a plate formed in the shape of an L for fitting into a groove transversely formed in said bottom of said tub adjacent the water inlet end thereof and spaced from an opposing side wall to form a trough for receiving and storing the inlet water from said recirculating pump, said tub adapted to hold said land mass immediately downstream of said trough whereby water passing over said dam will pass over the surface of said land mass to said drain end of said tub; and means for selectively tilting the water inlet end of said tub upwardly relative to the drain end thereof.
Claim 4
Dependent Claim
33 words
The system of claim 2 further comprising an open-top cabinet for housing said water separation means in said pump; and means for hingedly mounting the drain end of said tub to said cabinet.
Claim 5
Dependent Claim
42 words
The system of claim 2 further comprising a source of air including a fan and a flexible hose provided with a nozzle at its discharge end for simulating wind over the body of water held to the drain end of said tub.
Claim 6
Dependent Claim
64 words
The apparatus of claim 2 further comprising an open-top cabinet; means for hingedly connecting the drain end of said tub to said cabinet to cover the open top thereof; means for selectively raising the water inlet end of said tub relative to the drain end thereof by reaction with said cabinet; and caster means mounted beneath said cabinet whereby said entire unit is mobile.
Claim 7
Dependent Claim
34 words
The system of claim 1 further comprising heat lamp means mounted above said tub for lighting the study area of said tub and for selectively heating said land mass over a period of time.
Claim 8
Dependent Claim
74 words
The system of claim 5 further comprising a pair of articulated panels connected respectively to the water inlet end and the drain end of said tub for covering said tub when it is not in use, said articulated panels being selectively movable to a use position uncovering said tub, at least one of said panels being selectively positionable in the third position to form a horizontal shelf adjacent the drain end of said tub.
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) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |