US4936381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baffle for tubular header
Assignee: Modine Manufacturing Co
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Filing: 1988-12-27
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Granted: 1990-06-26
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Expires: 2008-12-27
Abstract
Abstract The heat exchanger having a pair of elongated, tubular headers 10, 12 with tubes 14 extending between the headers 10, 12 and in fluid communication with the interiors thereof. Opposed slots 32, 34; 34, 52; 34, 56, 58; extend generally transverse to the length of the tubular headers 10, 12 and a baffle piece 26, 26', 26", 26"' and 26"" located in such slots.
Inventors
- 👤 Scot T. Alley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:46
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/0202; F28F9/0204; F28F9/0209; F28F9/0212; Y; Y10; Y10S; Y10S165/00; Y10S165/454; Y10S165/471; Y10S165/481; Y10S165/482
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
137 words
In a heat exchanger having a pair of elongated spaced headers and tubes extending between the headers and in fluid communication with the interior thereof, at least one of the headers being tubular and having a slot on one side generally transverse to the length of the tubular header and a baffle piece disposed in the slot to prevent full flow of a heat exchange fluid through the tubular header at the location of the baffle, the improvement comprising: an additional slot in said tubular header aligned with but generally opposite of said slot; said baffle piece having a perimeter generally the same as the cross section of the tubular header with opposite sides having notches in said perimeter, each said notch having a parallel edge that is generally parallel to an edge of the other notch.
Claim 2
Dependent Claim
137 words
In a heat exchanger having a pair of elongated spaced headers and tubes extending between the headers and in fluid communication with the interior thereof, at least one of the headers being tubular and having a slot on one side generally transverse to the length of the tubular header and a baffle piece disposed in the slot to prevent full flow of a heat exchange fluid through the tubular header at the location of the baffle, the improvement comprising: an additional slot in said tubular header aligned with but generally opposite of said slot; said baffle piece having a perimeter generally the same as the cross section of the tubular header with opposite sides having notches in said perimeter, each said notch having a parallel edge that is generally parallel to an edge of the other notch.
Claim 3
Dependent Claim
19 words
The heat exchanger of claim 1 wherein each notch includes a shoulder edge generally transverse to the parallel edge.
Claim 4
Dependent Claim
12 words
The heat exchanger of claim 2 wherein said shoulder edges are aligned.
Claim 5
Dependent Claim
22 words
The heat exchanger of claim 1 wherein each notch includes a shoulder edge extending from the corresponding parallel edge to said perimeter.
Claim 6
Dependent Claim
22 words
The heat exchanger of claim 1 wherein said perimeter, at a location between said notches, has at least one outwardly extending tab.
Claim 7
Dependent Claim
33 words
The heat exchanger of claim 5 wherein each said notch includes a shoulder edge extending from the corresponding parallel edge to said perimeter and said tab is located oppositely of said shoulder edges.
Claim 8
Dependent Claim
144 words
In a heat exchanger having a pair of elongated spaced headers and tubes extending between the headers and in fluid communication with the interiors thereof, at least one of the headers being tubular with a generally circular cross section and having a slot on one side generally transverse to the length of the tubular header and a baffle piece disposed in the slot to prevent full flow of a heat exchange fluid through the tubular header at the location of the baffle, the improvement comprising: an additional slot in said tubular header aligned with but generally opposite of said slot; said baffle piece having a circular perimeter of the same size as the tubular header and with opposite sides having generally L-shaped notches in said perimeter, each said notch having a parallel edge that is generally parallel to an edge of the other notch.
Claim 9
Dependent Claim
144 words
In a heat exchanger having a pair of elongated spaced headers and tubes extending between the headers and in fluid communication with the interiors thereof, at least one of the headers being tubular with a generally circular cross section and having a slot on one side generally transverse to the length of the tubular header and a baffle piece disposed in the slot to prevent full flow of a heat exchange fluid through the tubular header at the location of the baffle, the improvement comprising: an additional slot in said tubular header aligned with but generally opposite of said slot; said baffle piece having a circular perimeter of the same size as the tubular header and with opposite sides having generally L-shaped notches in said perimeter, each said notch having a parallel edge that is generally parallel to an edge of the other notch.
Claim 10
Dependent Claim
29 words
The heat exchanger of claim 7 wherein said additional slot has two sections and further including an additional notch in said periphery at a location between said parallel edges.
Claim 11
Dependent Claim
127 words
In a heat exchanger having a pair of elongated spaced headers and tubes extending between the headers and in fluid communication with the interiors thereof, at least one of the headers being tubular with a circular cross section and having a slot on one side generally transverse to the length of the tubular header and a baffle piece disposed in the slot to prevent full flow of a heat exchange fluid through the tubular header at the location of the baffle, the improvement comprising: an additional slot in said tubular header aligned with but generally opposite of said slot; said baffle piece having a circular perimeter generally the same size as the circular cross section of the tubular header with opposite sides having notches in said perimeter.
Claim 12
Dependent Claim
127 words
In a heat exchanger having a pair of elongated spaced headers and tubes extending between the headers and in fluid communication with the interiors thereof, at least one of the headers being tubular with a circular cross section and having a slot on one side generally transverse to the length of the tubular header and a baffle piece disposed in the slot to prevent full flow of a heat exchange fluid through the tubular header at the location of the baffle, the improvement comprising: an additional slot in said tubular header aligned with but generally opposite of said slot; said baffle piece having a circular perimeter generally the same size as the circular cross section of the tubular header with opposite sides having notches in said perimeter.
Claim 13
Dependent Claim
128 words
In a heat exchanger having a pair of elongated spaced headers and tubes extending between the headers and in fluid communication with the interiors thereof, at least one of the headers being tubular with a generally circular cross section and having a slot on one side generally transverse to the length of the tubular header and a baffle piece disposed in the slot to prevent full flow of a heat exchange fluid through the tubular header at the location of the baffle, the improvement comprising; an additional slot in said tubular header aligned with, but generally opposite, of said slot and having spaced edges; said baffle piece extending through both of said slots and having opposed edges in substantial abutment with the opposed edges of said additional slot.
Claim 14
Dependent Claim
128 words
In a heat exchanger having a pair of elongated spaced headers and tubes extending between the headers and in fluid communication with the interiors thereof, at least one of the headers being tubular with a generally circular cross section and having a slot on one side generally transverse to the length of the tubular header and a baffle piece disposed in the slot to prevent full flow of a heat exchange fluid through the tubular header at the location of the baffle, the improvement comprising; an additional slot in said tubular header aligned with, but generally opposite, of said slot and having spaced edges; said baffle piece extending through both of said slots and having opposed edges in substantial abutment with the opposed edges of said additional slot.
Claim 15
Dependent Claim
11 words
The heat exchanger of claim 10 wherein said edges are parallel.
Claim 16
Dependent Claim
12 words
The heat exchanger of claim 10 wherein said edges are converging edges.
Claim 17
Dependent Claim
14 words
The heat exchanger of claim 12 wherein said baffle has a generally circular perimeter.
Claim 18
Dependent Claim
13 words
The heat exchanger of claim 12 wherein said baffle has a trapezoidal perimeter.
References Cited (Backward Citations)
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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) | 1993-06-25 | 1993-12-25 | 1994-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-25 | 1997-12-25 | 1998-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-25 | 2001-12-25 | 2002-06-26 | $7700.00 | Window Closed / Lapsed |