US3874399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delivery system for high melting point oils in a tank
Assignee: Fuji Oil Co Ltd (fka Fuji Oil Holdings Inc)
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Filing: 1973-06-29
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Granted: 1975-04-01
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Expires: 1993-06-29
Abstract
Abstract An oil delivery system wherein, in order to effect the discharge of solidified or semi-solidified oil remaining in a tank after primary delivery of the bulk of the oil therefrom, a nozzle is inserted in the free space within the tank, oil of the same kind as the oil in the primary delivery is heated and directed through the nozzle onto the residual oil, which is thereby melted, and rendered easily movable.
Inventors
- 👤 Koichi Ishihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:52
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/80; B63; B63B; B63B27/00; B63B27/24; B63B57/00; B63B57/02; B67D9/00; B67D9/02; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391; Y10T137/0402; Y10T137/0441; Y10T137/048; Y10T137/6416; Y10T137/6552; Y10T137/8593; Y10T137/85954; Y10T137/86187
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
167 words
A system for removing melted and unmelted high melting point oils from a first tank comprising, removal means for removing melted high melting point oil in the first tank, storage tank means having a capacity at least equivalent to said first tank, connected to said removal means for receiving said melted oil delivered by said removal means from the first tank, nozzle means inserted into an open space within said first tank above any unmelted high melting point oil in said first tank for directing oil under pressure onto residual unmelted oil in said first tank, and supply means connected between the storage tank means and the nozzle means, said supply means comprising a pump and a heater for heating oil to a temperature such that the residual unmelted oil remaining in the first tank is melted by the heated oil directed through said nozzle means, whereby the high melting point oil in the first tank is melted so as to be removed by the removal means.
Claim 2
Independent Claim
167 words
A system for removing melted and unmelted high melting point oils from a first tank comprising, removal means for removing melted high melting point oil in the first tank, storage tank means having a capacity at least equivalent to said first tank, connected to said removal means for receiving said melted oil delivered by said removal means from the first tank, nozzle means inserted into an open space within said first tank above any unmelted high melting point oil in said first tank for directing oil under pressure onto residual unmelted oil in said first tank, and supply means connected between the storage tank means and the nozzle means, said supply means comprising a pump and a heater for heating oil to a temperature such that the residual unmelted oil remaining in the first tank is melted by the heated oil directed through said nozzle means, whereby the high melting point oil in the first tank is melted so as to be removed by the removal means.
Claim 3
Dependent Claim
43 words
A system as claimed in claim 1 in which is provided distribution means for directing the oil removed from the first tank by the removal means to either the storage means or to the supply means without first going into the storage means.
Claim 4
Independent Claim
105 words
A method for removing high melting point oils contained in a tank comprising the step of providing a portion of the same type of oil as is to be removed and which is at such a temperature that it will melt unmelted oil remaining in the tank, the step of directing said heated oil under pressure onto residual unmelted oil remaining in the tank, whereby the unmelted oil remaining in the tank is melted, and the step of removing melted oil from the tank, and continuously repeating said steps until the unmelted residual oil in the tank is wholly melted and removed from the tank.
Claim 5
Independent Claim
105 words
A method for removing high melting point oils contained in a tank comprising the step of providing a portion of the same type of oil as is to be removed and which is at such a temperature that it will melt unmelted oil remaining in the tank, the step of directing said heated oil under pressure onto residual unmelted oil remaining in the tank, whereby the unmelted oil remaining in the tank is melted, and the step of removing melted oil from the tank, and continuously repeating said steps until the unmelted residual oil in the tank is wholly melted and removed from the tank.
Claim 6
Dependent Claim
56 words
A method as claimed in claim 3 in which the step of providing a portion of oil the same as the type of unmelted oil to be removed comprises obtaining said portion from a source of supply and heating said portion to such a temperature that it will melt the unmelted oil remaining in the tank.
Claim 7
Dependent Claim
52 words
A method as claimed in claim 3 in which the step of providing a portion of oil the same as the type of unmelted oil to be removed comprises using the melted oil removed from the tank in the removing step either mixed or unmixed with oil from a source of supply.
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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |