US3909898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for manufacturing a helically finned heat exchanger
Assignee: General Electric Co
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Filing: 1974-12-04
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Granted: 1975-10-07
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Expires: 1994-12-04
Abstract
Abstract A method and apparatus is disclosed for the manufacture of a continuous heat exchanger tube including helically winding a spine fin material on the outer wall of a base tube member. A preselected portion of the spine fin material is secured against movement relative to the base tube member. The heat exchanger is then severed in the secured portion so that a section of the secured portion is arranged at each end of the severed heat exchanger. The secured severed end sections are effective in maintaining the intermediate portion of the spine fin material from unwinding and, as a result, in heat transfer relationship with the base tube member.
Inventors
- 👤 Robert E Hicks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:26
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/22; B21C37/26; F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/34; F28F1/36; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1084; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378; Y10T29/49382; Y10T29/49789; Y10T29/49798; Y10T29/51; Y10T29/5176; Y10T29/53; Y10T29/53113
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
129 words
Method of manufacturing a continuous spine fin heat exchanger tube including a spine fin material supported on a base tube member which comprises: helically winding said spine fin material in intimate contact with adjacent wraps and the outer wall of said tube; securing a preselected portion of said spine fin material at spaced intervals on said spine fin heat exchanger so as to prevent movement thereof relative to said base tube member; severing said heat exchanger in said preselected portion to form predetermined lengths of said heat exchanger with said preselected portions forming end portions effectively held against movement relative to said base tube member so that the other portion of said helically wound spine fin material intermediate said preselected portion is maintained in its initial helically wound position.
Claim 2
Dependent Claim
129 words
Method of manufacturing a continuous spine fin heat exchanger tube including a spine fin material supported on a base tube member which comprises: helically winding said spine fin material in intimate contact with adjacent wraps and the outer wall of said tube; securing a preselected portion of said spine fin material at spaced intervals on said spine fin heat exchanger so as to prevent movement thereof relative to said base tube member; severing said heat exchanger in said preselected portion to form predetermined lengths of said heat exchanger with said preselected portions forming end portions effectively held against movement relative to said base tube member so that the other portion of said helically wound spine fin material intermediate said preselected portion is maintained in its initial helically wound position.
Claim 3
Dependent Claim
43 words
A method as set forth in claim 1, wherein the spine fin material in the preselected portion is secured against movement relative to the base tube member by applying adhesive to the outer wall of the base tube prior to said winding step.
Claim 4
Dependent Claim
53 words
A method as set forth in claim 1, wherein the spine fin material in the preselected portion is secured against movement relative to the base tube member by applying a bonding means on said spine fin material after said winding step that is sufficient to bond adjacent wraps of said spine fin material.
Claim 5
Dependent Claim
24 words
A method as set forth in claim 3, wherein said bonding means encapsulates adjacent wraps of the spine fin material in said preselected area.
Claim 6
Independent Claim
155 words
An apparatus for manufacturing a continuous spine fin heat exchanger tube including a spine fin material supported on a base tube member which comprises: means advancing said base tube member at a preselected rate of speed; means helically winding said spine fin material in intimate contact with adjacent wraps and the outer wall of said advancing tube to form said spine fin heat exchanger; means securing a preselected portion of said spine fin material at spaced intervals along the advancing spine fin heat exchanger so as to prevent movement thereof relative to said base tube member; means severing said advancing heat exchanger in said preselected portion to form predetermined lengths of said heat exchanger with said preselected portion forming end portions effectively held against movement relative to said base tube member so that the other portion of said helically wound spine fin material intermediate said preselected portion is maintained in its initial helically wound position.
Claim 7
Independent Claim
155 words
An apparatus for manufacturing a continuous spine fin heat exchanger tube including a spine fin material supported on a base tube member which comprises: means advancing said base tube member at a preselected rate of speed; means helically winding said spine fin material in intimate contact with adjacent wraps and the outer wall of said advancing tube to form said spine fin heat exchanger; means securing a preselected portion of said spine fin material at spaced intervals along the advancing spine fin heat exchanger so as to prevent movement thereof relative to said base tube member; means severing said advancing heat exchanger in said preselected portion to form predetermined lengths of said heat exchanger with said preselected portion forming end portions effectively held against movement relative to said base tube member so that the other portion of said helically wound spine fin material intermediate said preselected portion is maintained in its initial helically wound position.
Claim 8
Dependent Claim
38 words
The apparatus according to claim 5 wherein said means advancing said tube include control means associated therewith for activating said securing means and said severing means at preselected times during the manufacture of said spine fin heat exchanger.
Claim 9
Dependent Claim
44 words
The apparatus according to claim 6 wherein the means securing said preselected portion of said spine fin material includes means for applying adhesive to said base tube member in said preselected portion prior to wrapping the spine fin material on said tube base member.
Claim 10
Dependent Claim
48 words
The apparatus according to claim 6 wherein the means securing said preselected portion of said spine fin material includes means for depositing an amount of adhesive sufficient to bond adjacent wraps of said spine fin material in said portion prior to severing said heat exchanger into predetermined lengths.
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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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |