US4208996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater for pre-heating fuel
Assignee: Phillips and Temro Industries Inc
•
Filing: 1978-12-07
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Granted: 1980-06-24
•
Expires: 1998-12-07
Abstract
Abstract A heater for preheating fuel includes a housing having a partition therein to form two chambers. Heated liquid fluid is passed through one of the chambers and the fuel is passed through the other chamber. The heat from the heated liquid is transmitted through the partition to the fuel.
Inventors
- 👤 Arthur Lancaster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:21
CPC Classifications
F; F02; F02M; F02M31/00; F02M31/02; F02M31/16; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
188 words
A fuel heater for a diesel engine for heating a fuel having wax flakes precipitated therein at reduced temperatures, said fuel being heated in a heat exchanger by a heated liquid, said heat exchanger comprising: (a) a pair of identical shell members, (b) a divider member adapted to cooperate with said shell members, (c) means for securing said shell members to opposite sides of said divider member to form said heat exchanger having separate first and second chambers; (d) inlet and outlet means connected to said shell member forming said first chamber and interconnected with a source of heated liquid for passing a heated liquid through said first chamber, (e) second inlet and outlet means connected to said shell member forming said second chamber and interconnected in a fuel system of a diesel engine between a fuel tank and fuel filter for passing said fuel through said second chamber and heat the fuel above the precipitation temperature of the wax flakes as it flows into and out of said second compartment, whereby the heat from said heating fluid is transmitted through said divider member to heat said fuel.
Claim 2
Dependent Claim
188 words
A fuel heater for a diesel engine for heating a fuel having wax flakes precipitated therein at reduced temperatures, said fuel being heated in a heat exchanger by a heated liquid, said heat exchanger comprising: (a) a pair of identical shell members, (b) a divider member adapted to cooperate with said shell members, (c) means for securing said shell members to opposite sides of said divider member to form said heat exchanger having separate first and second chambers; (d) inlet and outlet means connected to said shell member forming said first chamber and interconnected with a source of heated liquid for passing a heated liquid through said first chamber, (e) second inlet and outlet means connected to said shell member forming said second chamber and interconnected in a fuel system of a diesel engine between a fuel tank and fuel filter for passing said fuel through said second chamber and heat the fuel above the precipitation temperature of the wax flakes as it flows into and out of said second compartment, whereby the heat from said heating fluid is transmitted through said divider member to heat said fuel.
Claim 3
Dependent Claim
30 words
A heater as set forth in claim 1 wherein said means for securing comprise outer aligned flanges on said shell and divider members to permit direct joining of said flanges.
Claim 4
Dependent Claim
27 words
A heater as set forth in claim 2 wherein said divider member comprises a corrugated area for transmitting heat from said first chamber into said second chamber.
Claim 5
Dependent Claim
25 words
A heater as set forth in claim 3 wherein said flanges of said shell members and said divider member are joined together by seam welding.
Claim 6
Dependent Claim
27 words
A heater as set forth in claim 4 wherein said heated liquid passing through said first chamber comprises hot water from a radiator of said diesel engine.
Claim 7
Dependent Claim
26 words
A heater as set forth in claim 5 wherein said fuel passes from said second chamber through a filter to the cylinders of said diesel engine.
Claim 8
Dependent Claim
37 words
A heater as set forth in claim 6 wherein the fuel to be heated passes from a fuel tank, through a fuel lift pump, through said second chamber, through a filter and injection pump to said cylinders.
Claim 9
Dependent Claim
16 words
A heater as set forth in claim 7 wherein said shells and divider members are aluminum.
Claim 10
Dependent Claim
20 words
A heater as set forth in claim 8 wherein said shell members include recesses therein to provide added strength thereto.
Claim 11
Dependent Claim
16 words
A heater as set forth in claim 7 wherein said shells and divider members are steel.
References Cited (Backward Citations)
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Cited
GB616120A
Cited
US3354872A
Cited
US3472214A
Cited
US3892212A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-06-24 | 1983-12-24 | 1984-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-24 | 1987-12-24 | 1988-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-24 | 1991-12-24 | 1992-06-24 | $7700.00 | Window Closed / Lapsed |