US6330910B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger for a motor vehicle exhaust
Assignee: Individual
•
Filing: 2000-02-25
•
Granted: 2001-12-18
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Expires: 2020-02-25
Abstract
Abstract A heat exchanger for a motor vehicle exhaust includes a tubular body having a first end, a second end, a peripheral sidewall, and at least two flow passages that extend between the first end and the second end. The at least two flow passages include at least one heat exchange fluid flow passage and at least one bypass fluid flow passage. A heat exchange coil is positioned in the at least one heat exchange fluid flow passage. The heat exchange coil has an inlet and an outlet extending through the sidewall of the tubular body. A valve is provided for selecting between the at least one heat exchange fluid flow passage and the at least one bypass fluid flow passage.
Inventors
- 👤 Easton Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:29
CPC Classifications
F; F01; F01N; F01N5/00; F01N5/02; F01N3/00; F01N3/02; F28; F28D; F28D7/00; F28D7/02; F28D7/024; F28F; F28F27/00; F28F27/02; F01N2240/00; F01N2240/02; F01N2410/00; F01P; F01P2025/00; F01P2025/08; F01P2060/00; F01P2060/08; F01P2060/16; F01P2060/18; F28F2250/00; F28F2250/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
144 words
A heat exchanger for a motor vehicle exhaust, comprising: a tubular body having a first end, a second end, a peripheral sidewall, and at least two flow passages that extend between the first end and the second end, the at least two flow passages including at least one heat exchange fluid flow passage and at least one bypass fluid flow passage; a heat exchange coil positioned in the at least one heat exchange fluid flow passage, the heat exchange coil having an inlet and an outlet extending through the sidewall of the tubular body; at least one valve for selecting between the at least one heat exchange fluid flow passage and the at least one bypass fluid flow passage; and an insulated dual wall positioned between the at least one heat exchange fluid flow passage and the at least one bypass fluid flow passage.
Claim 2
Dependent Claim
144 words
A heat exchanger for a motor vehicle exhaust, comprising: a tubular body having a first end, a second end, a peripheral sidewall, and at least two flow passages that extend between the first end and the second end, the at least two flow passages including at least one heat exchange fluid flow passage and at least one bypass fluid flow passage; a heat exchange coil positioned in the at least one heat exchange fluid flow passage, the heat exchange coil having an inlet and an outlet extending through the sidewall of the tubular body; at least one valve for selecting between the at least one heat exchange fluid flow passage and the at least one bypass fluid flow passage; and an insulated dual wall positioned between the at least one heat exchange fluid flow passage and the at least one bypass fluid flow passage.
Claim 3
Dependent Claim
18 words
The heat exchanger as defined in claim 1 , wherein the dual wall is insulated by circulating air.
Claim 4
Dependent Claim
147 words
A heat exchanger for a motor vehicle exhaust, comprising: a tubular body having a first end, a second end, a peripheral sidewall, and at least two flow passages that extend between the first end and the second end, the at least two flow passages including at least one heat exchange fluid flow passage and at least one bypass fluid flow passage, with an insulated dual wall positioned between the at least one heat exchange fluid flow passage and the at least one bypass fluid flow passage; a heat exchange coil positioned in the at least one heat exchange fluid flow passage, the heat exchange coil having an inlet and an outlet extending through the sidewall of the tubular body; at least one pivotally movable valve member for selecting between the at least one heat exchange fluid flow passage and the at least one bypass fluid flow passage.
Claim 5
Dependent Claim
147 words
A heat exchanger for a motor vehicle exhaust, comprising: a tubular body having a first end, a second end, a peripheral sidewall, and at least two flow passages that extend between the first end and the second end, the at least two flow passages including at least one heat exchange fluid flow passage and at least one bypass fluid flow passage, with an insulated dual wall positioned between the at least one heat exchange fluid flow passage and the at least one bypass fluid flow passage; a heat exchange coil positioned in the at least one heat exchange fluid flow passage, the heat exchange coil having an inlet and an outlet extending through the sidewall of the tubular body; at least one pivotally movable valve member for selecting between the at least one heat exchange fluid flow passage and the at least one bypass fluid flow passage.
Claim 6
Dependent Claim
45 words
The heat exchanger as defined in claim 3 , wherein the at least one valve member has an intermediate position in which the flow is divided between the at least one heat exchange fluid flow passage and the at least one bypass fluid flow passage.
Claim 7
Dependent Claim
59 words
The heat exchanger as defined in claim 3 , wherein a first pivotally movable valve member is positioned to block access to the heat exchange fluid flow passage upstream of the heat exchange coil and a second pivotally movable valve member is positioned to block access to the heat exchange fluid flow passage downstream of the heat exchange coil.
Claim 8
Dependent Claim
18 words
The heat exchanger as defined in claim 3 , wherein the dual wall is insulated by circulating air.
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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) | 2004-12-17 | 2005-06-18 | 2005-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-12-17 | 2009-06-18 | 2009-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-12-17 | 2013-06-18 | 2013-12-18 | $7700.00 | Window Closed / Lapsed |