US3636976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction vortex eliminator
Assignee: Sunoco Inc
•
Filing: 1970-04-02
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Granted: 1972-01-25
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Expires: 1990-04-02
Abstract
Abstract A bowl-shaped member, whose cross-sectional area is large compared to the cross-sectional area of the pipe, is mounted below the pump suction pipe in a subterranean liquid storage tank. This member rests in upright position on the bottom of the tank, with its open end at the top. The member is so designed that it can be collapsed for insertion into the tank, and for withdrawal therefrom, through the suction pipe.
Inventors
- 👤 William B Hansel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:43
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/54; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86348
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
95 words
In combination, a subterranean liquid storage tank, a pump suction pipe mounted therein and extending substantially vertically from the top of the tank toward the bottom thereof, and a bowl-shaped member positioned below and in vertical alignment with the lower open end of said pipe, said member being open at its upper end and the cross-sectional area of said member at said upper end being large compared to that of said pipe; said member being collapsible to a size such as to be insertable into and withdrawable from said tank by way of said pipe.
Claim 2
Dependent Claim
95 words
In combination, a subterranean liquid storage tank, a pump suction pipe mounted therein and extending substantially vertically from the top of the tank toward the bottom thereof, and a bowl-shaped member positioned below and in vertical alignment with the lower open end of said pipe, said member being open at its upper end and the cross-sectional area of said member at said upper end being large compared to that of said pipe; said member being collapsible to a size such as to be insertable into and withdrawable from said tank by way of said pipe.
Claim 3
Dependent Claim
28 words
Combination set out in claim 1, including also means attached to said member and operable from outside said tank for moving said member to its extended, operating position.
Claim 4
Dependent Claim
31 words
Combination defined in claim 2, wherein said member is sufficiently flexible to allow it to be collapsed to pass through said pipe or to be extended to its bowl-shaped operating position.
References Cited (Backward Citations)
US2372678A
Cited
US2657826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |