Patent US3964286A successfully refreshed from Google Patents.
US3964286A
Expired / Lapsed
US
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Apparatus for positioning pin fins of a finned-tube heat exchanger
Assignee: General Electric Co
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Filing: 1975-06-23
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Granted: 1976-06-22
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Expires: 1995-06-23
Abstract
Abstract An apparatus for contacting and bending preselected pin fins of a finned-tube heat exchanger to preselected locations. First and second toothed wheels positioned on opposed sides of respective first and second pin fin rows bend the pins in response to moving a finned tube through a base opening. A wheel contacts the finned tube between the rows of pin fins and urges the tube into forcible engagement with a base.
Inventors
- 👤 Charles J. Oerther
- 👤 Joseph B. Osborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:06
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/02; B21D53/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
139 words
Apparatus for bending individual pin fins of a finned-tube heat exchanger to preselected locations, said finned-tube heat exchanger having first and second rows of pin fins extending radially outwardly from a tube, comprising: a base having an opening for receiving and slidably supporting the tube; a wheel connected to the base adjacent the base opening, said wheel being of dimensions sufficient for contacting a portion of the tube between the rows of pin fins and urging the tube into forcible engagement with the base opening; and first and second toothed wheels connected to the base on opposed sides of the base opening, each of said toothed wheels being of dimensions sufficient for contacting and bending preselected pin fins of a respective pin fin row to preselected locations in response to sliding the finned-tube heat exchanger through the base opening.
Claim 2
Dependent Claim
139 words
Apparatus for bending individual pin fins of a finned-tube heat exchanger to preselected locations, said finned-tube heat exchanger having first and second rows of pin fins extending radially outwardly from a tube, comprising: a base having an opening for receiving and slidably supporting the tube; a wheel connected to the base adjacent the base opening, said wheel being of dimensions sufficient for contacting a portion of the tube between the rows of pin fins and urging the tube into forcible engagement with the base opening; and first and second toothed wheels connected to the base on opposed sides of the base opening, each of said toothed wheels being of dimensions sufficient for contacting and bending preselected pin fins of a respective pin fin row to preselected locations in response to sliding the finned-tube heat exchanger through the base opening.
Claim 3
Dependent Claim
37 words
Apparatus, as set forth in claim 1, wherein the base includes a slot extending downwardly from said opening for receiving a flange of the finned tube and stabilizing said finned tube during movement through the base opening.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |