Patent US3251375A successfully refreshed from Google Patents.
US3251375A
Expired / Lapsed
US
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Apparatus for bottom loading and unloading of tanks
Assignee: ExxonMobil Oil Corp
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Filing: 1963-07-17
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Granted: 1966-05-17
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Expires: 1983-07-17
Abstract
No abstract record available.
Inventors
- 👤 Lionel E Reed
- 👤 Othello M Hillman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:14
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/126; F16K31/128; B; B65; B65D; B65D88/00; B65D88/54; B65D88/544; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7368; Y10T137/7371; Y10T137/7374; Y10T137/8593; Y10T137/86928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
AN APPARATUS FOR STORAGE OF A FLUID WHICH COMPRISES A FLUID STORAGE COMPARTMENT, A CONDUIT MEANS INTO THE LOWER PORTION OF SAID COMPARTMENT, A FOOT VALVE MEANS NORMALLY BIASED TO CLOSED POSITION CONTROLLING FLUID FLOW BETWEEN SAID COMPARTMENT AND SAID CONDUIT MEANS, A VENT MEANS IN THE UPPER PORTION OF SAID COMPARTMENT CONTAINING A VENT VALVE NORMALLY BIASED TO CLOSED POSITION CONTROLLING FLUID FLOW THROUGH SAID VENT MEANS, MEANS TO SUPPLY A CONTROL FUNCTION TO SAID VENT VALVE, MEANS RESPONSIVE TO SAID CONTROL FUNCTION TO OPEN SAID VENT VALVE, MEANS RESPONSIVE TO AN OPEN POSITION OF SAID VENT VALVE TO SUPPLY SAID CONTROL FUNCTION TO SAID FOOT VALVE, VARIABLE MEANS RESPONSIVE TO SAID CONTROL FUNCTION TO OPEN SAID FOOT VALVE AND TO POSITION SAME RESPONSIVE TO THE MAGNITUDE OF SAID CONTROL FUNCTION, ATTENUATING MEANS TO ATTENUATE SAID CONTROL FUNCTION TO SAID FOOT VALVE, AND MEANS TO SELECTIVELY ACTUATE SAID ATTENUATING MEANS.
Claim 2
Independent Claim
151 words
AN APPARATUS FOR STORAGE OF A FLUID WHICH COMPRISES A FLUID STORAGE COMPARTMENT, A CONDUIT MEANS INTO THE LOWER PORTION OF SAID COMPARTMENT, A FOOT VALVE MEANS NORMALLY BIASED TO CLOSED POSITION CONTROLLING FLUID FLOW BETWEEN SAID COMPARTMENT AND SAID CONDUIT MEANS, A VENT MEANS IN THE UPPER PORTION OF SAID COMPARTMENT CONTAINING A VENT VALVE NORMALLY BIASED TO CLOSED POSITION CONTROLLING FLUID FLOW THROUGH SAID VENT MEANS, MEANS TO SUPPLY A CONTROL FUNCTION TO SAID VENT VALVE, MEANS RESPONSIVE TO SAID CONTROL FUNCTION TO OPEN SAID VENT VALVE, MEANS RESPONSIVE TO AN OPEN POSITION OF SAID VENT VALVE TO SUPPLY SAID CONTROL FUNCTION TO SAID FOOT VALVE, VARIABLE MEANS RESPONSIVE TO SAID CONTROL FUNCTION TO OPEN SAID FOOT VALVE AND TO POSITION SAME RESPONSIVE TO THE MAGNITUDE OF SAID CONTROL FUNCTION, ATTENUATING MEANS TO ATTENUATE SAID CONTROL FUNCTION TO SAID FOOT VALVE, AND MEANS TO SELECTIVELY ACTUATE SAID ATTENUATING MEANS.
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) | 1969-05-16 | 1969-11-15 | 1970-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-16 | 1973-11-15 | 1974-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-16 | 1977-11-15 | 1978-05-17 | $7700.00 | Window Closed / Lapsed |