Patent US3631880A successfully refreshed from Google Patents.
US3631880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction arrangement for pumps
Assignee: Sunoco Inc R&M
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Filing: 1970-04-02
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Granted: 1972-01-04
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Expires: 1990-04-02
Abstract
Abstract A flexible hose, supported at one end by a float in a subterranean liquid fuel storage tank, provides a floating suction or intake for the discharge pump of the fuel dispensing apparatus. For use with an aboveground or surface-type discharge pump, the float and the hose are sized to be insertable into the tank from above the same, by way of the suction pipe mounted in the tank, after the lower portion of the suction pipe has been cut off. The floating suction arrangement can also be used with discharge pumps of the submersible type.
Inventors
- 👤 William B Hansel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:39
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/10; F04B53/1037; F04D; F04D29/00; F04D29/40; F04D29/406; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3006
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
154 words
For use with a subterranean liquid storage tank having therein a rigid suction pipe extending downwardly from the top of the tank but terminating a substantial distance above the bottom thereof: a piece of flexible hose adapted to extend between the lower end of said pipe and a point adjacent the top of said tank, a float secured to one end of said hose, said float having sufficient buoyancy in the liquid stored in said tank to maintain one end of said hose closely adjacent the upper surface of said liquid but below such surface; means securing the other end of said hose to the lower end of said pipe, said float, said hose, and said securing means all being sized such as to be insertable into said tank from above the same by way of said pipe; and means operable from without said tank for actuating the securing means to itS hose-securing position.
Claim 2
Dependent Claim
154 words
For use with a subterranean liquid storage tank having therein a rigid suction pipe extending downwardly from the top of the tank but terminating a substantial distance above the bottom thereof: a piece of flexible hose adapted to extend between the lower end of said pipe and a point adjacent the top of said tank, a float secured to one end of said hose, said float having sufficient buoyancy in the liquid stored in said tank to maintain one end of said hose closely adjacent the upper surface of said liquid but below such surface; means securing the other end of said hose to the lower end of said pipe, said float, said hose, and said securing means all being sized such as to be insertable into said tank from above the same by way of said pipe; and means operable from without said tank for actuating the securing means to itS hose-securing position.
Claim 3
Dependent Claim
14 words
Structure of claim 1, wherein the actuating means is also insertable into said pipe.
References Cited (Backward Citations)
US318689A
Cited
US2858843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |