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US3566957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-to-metal heat exchanger for recreational vehicle
Assignee: Individual
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Filing: 1969-04-16
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Granted: 1971-03-02
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Expires: 1989-04-16
Abstract
Abstract A heat exchange unit for circulating vehicle radiator liquid is positioned in a large tank that conducts potable water so that the radiator liquid becomes cooled as the potable water becomes heated. The unit includes a container capable of being mounted to the tank and a conduit inserted in heat exchange relationship within the container. For safety purposes a narrow leakage gap is defined between the container and conduit so that any leakage of radiator liquid from the conduit will automatically flow outwardly of the tank where it will be unable to contaminate the potable water.
Inventors
- 👤 James Earl Bridegum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:48
CPC Classifications
F; F02; F02G; F02G5/00; B; B60; B60R; B60R15/00; F24; F24D; F24D17/00; F24D17/0005; F24D17/001; Y; Y02; Y02B; Y02B30/00; Y02B30/18; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
26 words
The structure according to claim 1, wherein; the average clearance between the container inner wall and conduit outer wall is between 0.002 inches and 0.005 inches.
Claim 2
Dependent Claim
51 words
The structure according to claim 1, including; a flow tube extending through one conduit port and into the interior of the conduit, the flow tube being arranged to increase the circulation path of radiator water through the conduit in order to increase the heat transfer capacity between the conduit and container.
Claim 3
Dependent Claim
21 words
The structure according to claim 3, wherein; the flow tube extends over 90 percent of the end-to-end distance of the conduit.
Claim 4
Dependent Claim
20 words
The structure according to claim 4, including; a second flow tube coupled in fluid communication to the other conduit port.
Claim 5
Dependent Claim
46 words
The structure according to claim 1, wherein: the container has a closed end and an open end for receiving the conduit; and the conduit has a closed end arranged adjacent the container closed end and a second end that forms the fluid inlet and exit ports.
Claim 6
Dependent Claim
50 words
The structure according to claim 6, wherein: the container is of tubular cross section; a mounting flange is joined to the container open end; the conduit is of tubular cross section and has a length substantially equivalent with that of the container, and the leakage gap is of annular configuration.
Claim 7
Dependent Claim
226 words
A vehicle heat exchange system for simultaneously heating potable liquid from a potable liquid source and cooling radiator water circulating through the vehicle radiator circuit, the system comprising: a. a tank having inlet and exit lines for admitting and discharging potable liquid; b. a metal container having a closed end and an open end, the container being mounted to and projecting into the tank and arranged in heat exchange relationship with the tank; c. a vehicle radiator flow line segment; d. a metal conduit coupled to the radiator vehicle flow line segment and having an inlet port for admitting radiator water and an exit port for discharging radiator water, the conduit being positioned within the container and in metal-to-metal heat exchange relationship therewith throughout the major portion of its length; e. a flow tube extending through one conduit port and into the interior of the conduit, the flow tube being arranged to increase the circulation path of radiator water through the conduit in order to increase the heat transfer capacity between the conduit and container; and f. means defining a leakage gap between the container and conduit for conducting any radiator water that might leak from a portion of the conduit positioned within the container to a location outwardly of the container, the average width of the leakage gap being between 0.002 inches and 0.005 inches.
Claim 8
Dependent Claim
21 words
The structure according to claim 8, wherein; the flow tube extends over 90 percent of the end-to-end distance of the conduit.
Claim 9
Dependent Claim
87 words
The structure according to claim 9, including: a tank for conducting potable liquid, the metal container being mounted to the tank so that the major portion of the conduit projects into the tank and the leakage gap terminates outwardly of the tank; and wherein, when relatively high vehicle radiator water is circulated through the conduit and relatively cool potable is circulated through the tank the heat exchange relationship between the conduit and container simultaneously causes the potable water to become heated while the radiator liquid becomes cooled.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |