US3709757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for bonding mating tubular joint members
Assignee: Carrier Corp
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Filing: 1971-01-18
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Granted: 1973-01-09
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Expires: 1991-01-18
Abstract
Abstract The present invention is directed to the bonding of tube joints exemplified by the securement of bell and spigot tube ends on plate fin or spiral fin coil units employed in refrigeration apparatus, the bonding process being characterized in part by accurate metering of a predetermined quantity of a thermosetting structural adhesive to particular locations on the mating tube joint members and productive of an extremely high strength bond therebetween resistive to deterioration after long exposure to normal environmental conditions.
Inventors
- 👤 R Sturley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:24
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/48; B29C65/52; B29C65/524; B29C65/4805; B29C65/483; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/12; B29C66/122; B29C66/1222; B29C66/1224; B29C66/50; B29C66/51; B29C66/52; B29C66/522; B29C66/5221; B29C66/5223; B29C66/5229; B29C66/52296; B29C66/52298; B29C66/53; B29C66/534; B29C66/5344; B29C66/5346; B29C66/53465; F; F28; F28F; F28F9/00; F28F9/26; B29C65/4835; B29L; B29L2031/00; B29L2031/18; F28F2275/00; F28F2275/02; F28F2275/025; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1702; Y10T156/1744
Claims Analysis
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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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |