Patent US3756900A successfully refreshed from Google Patents.
US3756900A
Expired / Lapsed
US
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Lastic materials apparatus for ultrasonically welding the ends of tubes in synthetic p
Assignee: GENECO Inc CH
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Filing: 1972-03-08
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Granted: 1973-09-04
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Expires: 1992-03-08
Abstract
Abstract The ends of plastic material tubes, for example containing a living biological product, are ultrasonically welded by a cooperating tool and block which press the ends of the tubes into a V-section inscribed within the initial outer circumference of the tubes. The tubes are supported in grooves defined by elastic ribs on a conveyor belt, these ribs serving to prevent propagation of the ultrasonic vibrations along the tubes.
Inventors
- 👤 G Michel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:16
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/08; B01; B01J; B01J19/00; B01J19/08; B01J19/10; B29C31/00; B29C31/002; B29C57/00; B29C57/10; B29C66/00; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81433; B29C66/81435; B29C66/8145; B29C66/81457; B29C66/83; B29C66/832; B29C66/8322; B29C66/83221; B29C66/84; B29C66/843; B29C66/8432; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921
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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |