Patent US3822464A successfully refreshed from Google Patents.
US3822464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of joining a tube to a roll forged sheet
Assignee: General Electric Co
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Filing: 1973-03-26
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Granted: 1974-07-09
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Expires: 1993-03-26
Abstract
Abstract A method of joining a metal tube to a member comprising roll forged sheets formed to provide a tubular passageway which comprises punching a hole in at least one of the sheets in communication with the passage, inserting a tubular member into the passageway sized to provide a radial clearance therebetween, crimping the sheets into engagement with the tube on opposite sides of the hole and circumferentially of the tube, introducing a heat-curable resin adhesive through the hole to substantially fill the space between the crimped areas, reducing the area of the sheet including the hole into hole-sealing engagement with the tube and thereafter curing the adhesive.
Inventors
- 👤 W Hester
- 👤 F Schumacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:00
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/06; F; F16; F16B; F16B17/00; F16B17/004; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/2878; Y10T428/2891
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
115 words
The method of adhesively joining a metal tube to a member comprising roll-bonded sheets formed to provide a tubular passageway therebetween comprising the steps of: punching a hole in at least one sheet in communication with said passageway; inserting an end portion of said tube into said passageway sized to provide radial clearance therebetween; mechanically working said sheets into engagement with said tube at spaced areas on opposite sides of said holes and circumferentially of said tube; introducing a heat-curable resin adhesive through one of said holes to substantially fill the space between spaced areas; pressing the portions of said sheets including said hole into hole-sealing engagement with said tube; and thereafter curing said adhesive.
Claim 2
Independent Claim
115 words
The method of adhesively joining a metal tube to a member comprising roll-bonded sheets formed to provide a tubular passageway therebetween comprising the steps of: punching a hole in at least one sheet in communication with said passageway; inserting an end portion of said tube into said passageway sized to provide radial clearance therebetween; mechanically working said sheets into engagement with said tube at spaced areas on opposite sides of said holes and circumferentially of said tube; introducing a heat-curable resin adhesive through one of said holes to substantially fill the space between spaced areas; pressing the portions of said sheets including said hole into hole-sealing engagement with said tube; and thereafter curing said adhesive.
Claim 3
Dependent Claim
29 words
The method according to claim 1 in which said sheets are crimped into engagement with said tube under conditions such that adjacent areas of said tube are also crimped.
Claim 4
Dependent Claim
17 words
The method according to claim 1 in which there is a hole in each of said sheets.
Claim 5
Dependent Claim
26 words
The method according to claim 3 in which all tube-overlapping portions of said sheets are mechanically worked into engagement with said tube during the hole-sealing operation.
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) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |