US3765384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling systems for internal combustion engines
Assignee: Individual
•
Filing: 1971-12-03
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Granted: 1973-10-16
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Expires: 1991-12-03
Abstract
Abstract A cooling system which comprises one or more cooling jackets secured to or otherwise formed with the head plate of an internal combustion engine and in close proximity to the cylinder heads of the engine. Each jacket is closely adjacent to and surrounds a spark plug associated with a cylinder. Furthermore, each of the jackets is connected to a heat exchanger, such as a radiator, through coolant delivery and return lines. A metal composition which is in a solid state at non-operating temperatures of the engine and is changed to a liquified state by the heat of the engine, when operating, serves as the coolant, and during operation is continually circulated through the jackets surrounding each of the spark plugs to cool the portions of the engine adjacent thereto. By virtue of cooling the immediate areas of the engine in proximity to the spark plugs, the heat of combustion can be rapidly dissipated which allows the engine to be operated at optimum temperatures, thereby increasing the operating efficiency, without the attendant problems incident to the presence of localized excess temperature conditions normally produced at or adjacent to the cylinder heads. Moreover, as a result of higher operating efficiency, the exhaust gases from engines equipped with the present cooling system contain a relatively low amount of the pollutants normally produced by internal combustion engines.
Inventors
- 👤 J Barnard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:25
CPC Classifications
F; F01; F01P; F01P3/00; F01P3/12; F01P3/16; H; H01; H01T; H01T13/00; H01T13/02; H01T13/16; F02; F02F; F02F7/00; F02F7/006; F02F2007/0063
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
103 words
A cooling system for hydrocarbon combustion engine which operates through gas ignition means and compression means; said cooling system comprising a jacket with a cooling chamber therein in close proximity to said ignition means, a cooling medium introduceable into said cooling chamber, at least a portion of said cooling medium becoming relatively solid at non-operating temperatures of said engine and said medium becoming liquified when subjected to the heat generated by the engine during operation thereof, and circulation means including the cooling chamber through which the said liquified cooling medium can circulate to carry away some of the engine heat generated during operation.
Claim 2
Dependent Claim
103 words
A cooling system for hydrocarbon combustion engine which operates through gas ignition means and compression means; said cooling system comprising a jacket with a cooling chamber therein in close proximity to said ignition means, a cooling medium introduceable into said cooling chamber, at least a portion of said cooling medium becoming relatively solid at non-operating temperatures of said engine and said medium becoming liquified when subjected to the heat generated by the engine during operation thereof, and circulation means including the cooling chamber through which the said liquified cooling medium can circulate to carry away some of the engine heat generated during operation.
Claim 3
Dependent Claim
17 words
The cooling system of claim 1 further characterized in that said cooling medium comprises a metal constituent.
Claim 4
Dependent Claim
20 words
The cooling system of claim 1 further characterized in that a heat exchanger is included in the said circulation means.
Claim 5
Dependent Claim
43 words
The cooling system of claim 1 further characterized in that said cooling system includes a housing attached to the engine, said cooling chamber being formed in said housing, an ignition element extending into said power chamber in close proximity to said cooling chamber.
Claim 6
Dependent Claim
104 words
In a hydrocarbon combustion engine having a compression chamber and means for igniting gas compressed therein, the improvement comprising a closed fluid circulating system including a jacket with a coolant chamber therein at least a portion of which is in close proximity to the gas igniting means, a cooling medium positioned in said circulating system for circulating therethrough including through the coolant chamber in the jacket when the engine is operating, said cooling medium being characterized by being relatively non-fluid at ambient temperatures, but becoming an easily flowing fluid when exposed to the normal operating temperatures of the engine for circulating in the system.
Claim 7
Dependent Claim
104 words
In a hydrocarbon combustion engine having a compression chamber and means for igniting gas compressed therein, the improvement comprising a closed fluid circulating system including a jacket with a coolant chamber therein at least a portion of which is in close proximity to the gas igniting means, a cooling medium positioned in said circulating system for circulating therethrough including through the coolant chamber in the jacket when the engine is operating, said cooling medium being characterized by being relatively non-fluid at ambient temperatures, but becoming an easily flowing fluid when exposed to the normal operating temperatures of the engine for circulating in the system.
Claim 8
Dependent Claim
22 words
In the engine defined in claim 5, the cooling medium includes a substance that liquifies at temperatures greater than about 120* F.
Claim 9
Dependent Claim
17 words
In the engine defined in claim 7, the cooling medium contains at least some metal containing substance.
Claim 10
Dependent Claim
21 words
In the engine defined in claim 7, further characterized in that the metal containing substance is a relatively good electrical conductor.
Claim 11
Dependent Claim
31 words
In the engine defined in claim 8, further characterized in that the metal containing substance liquifies when subject to a temperature in a range from approximately 120* to approximately 450* F.
Claim 12
Dependent Claim
34 words
In the engine defined in claim 7 further characterized in that the metal containing substance is selected from the class consisting of metals, metal alloys, metal solutions, metal compounds, and mixtures of the foregoing.
Claim 13
Dependent Claim
18 words
In the engine defined in claim 7 further characterized in that the cooling medium contains a wax-like material.
Claim 14
Dependent Claim
142 words
A cooling system for an internal combustion engine that includes a power cylinder with a piston movably positioned therein, means for introducing a combustible gas into the power cylinder, means for igniting the gas to move the piston on a power stroke and means to exhaust the waste products of combustion, comprising jacket means enclosing a chamber in close heat transfer proximity to the gas ignition means and to the power cylinder, means communicating said chamber with heat exchanger means, and a coolant substance positioned in said chamber and in the means communicating said chamber with the heat exchanger means, said coolant substance being characterized by being relatively thick and non-fluid at ambient non-operating conditions of the engine becoming highly fluid for circulation between the chamber and the heat exchanger means when subjected to the temperatures generated by the engine when operating.
Claim 15
Dependent Claim
142 words
A cooling system for an internal combustion engine that includes a power cylinder with a piston movably positioned therein, means for introducing a combustible gas into the power cylinder, means for igniting the gas to move the piston on a power stroke and means to exhaust the waste products of combustion, comprising jacket means enclosing a chamber in close heat transfer proximity to the gas ignition means and to the power cylinder, means communicating said chamber with heat exchanger means, and a coolant substance positioned in said chamber and in the means communicating said chamber with the heat exchanger means, said coolant substance being characterized by being relatively thick and non-fluid at ambient non-operating conditions of the engine becoming highly fluid for circulation between the chamber and the heat exchanger means when subjected to the temperatures generated by the engine when operating.
Claim 16
Dependent Claim
23 words
The cooling system defined in claim 12 wherein the coolant substance contains an ingredient that has relatively good electrical and thermal conductivity characteristics.
Claim 17
Dependent Claim
133 words
In a hydrocarbon combustion engine having a compression chamber for compressing a combustible gas and an ignition element extending into said compression chamber; a first cooling jacket in close proximity to a portion of said chamber and containing a coolant which is generally in a liquid condition at non-operating temperatures of the engine, a second cooling jacket at least a portion of which is in close proximity to the gas ignition means, said second cooling jacket being located in heat exchange relationship to said first cooling jacket and to the compression chamber, said second cooling jacket containing a cooling medium which is in a relatively non-flowable condition at non-operating temperatures of the engine but liquifies and becomes more flowable when subjected to heat generated in the compression chamber during operation of the engine.
Claim 18
Dependent Claim
133 words
In a hydrocarbon combustion engine having a compression chamber for compressing a combustible gas and an ignition element extending into said compression chamber; a first cooling jacket in close proximity to a portion of said chamber and containing a coolant which is generally in a liquid condition at non-operating temperatures of the engine, a second cooling jacket at least a portion of which is in close proximity to the gas ignition means, said second cooling jacket being located in heat exchange relationship to said first cooling jacket and to the compression chamber, said second cooling jacket containing a cooling medium which is in a relatively non-flowable condition at non-operating temperatures of the engine but liquifies and becomes more flowable when subjected to heat generated in the compression chamber during operation of the engine.
Claim 19
Dependent Claim
22 words
The hydrocarbon combustion engine of claim 14 further characterized in that the coolant in the second jacket includes a metal containing component.
Claim 20
Dependent Claim
29 words
The hydrocarbon combustion engine of claim 14 further characterized in that the coolant in the second jacket includes a metal containing component which has relatively good electrical conductive characteristics.
Claim 21
Dependent Claim
49 words
The hydrocarbon combustion engine of claim 14 further characterized in that the first and second jackets have a common wall separating them, said common wall being constructed to provide good heat transfer characteristics between the liquid coolant in the first jacket and the cooling medium in the second jacket.
Claim 22
Independent Claim
86 words
The method of cooling a hydrocarbon combustion engine which includes a power chamber therein and ignition means associated therewith for igniting fuel introduced thereto, said method comprising circulating a cooling medium in close proximity to said ignition means so that the medium is exposed to the temperatures generated thereby, said cooling medium being in a relatively solid non-flowing condition at non-operating temperatures of said engine and said medium being liquified by the heat generated in the power chamber of the engine during operation of the engine.
Claim 23
Independent Claim
86 words
The method of cooling a hydrocarbon combustion engine which includes a power chamber therein and ignition means associated therewith for igniting fuel introduced thereto, said method comprising circulating a cooling medium in close proximity to said ignition means so that the medium is exposed to the temperatures generated thereby, said cooling medium being in a relatively solid non-flowing condition at non-operating temperatures of said engine and said medium being liquified by the heat generated in the power chamber of the engine during operation of the engine.
Claim 24
Dependent Claim
22 words
The method of cooling a hydrocarbon combustion engine of claim 18 further characterized in that said cooling medium contains a metal constituent.
Claim 25
Dependent Claim
29 words
The method of cooling a hydrocarbon combustion engine of claim 18 further characterized in that the metal constituent of the cooling medium liquifies at temperatures greater than 120* F.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |