Patent US3426951A successfully refreshed from Google Patents.
US3426951A
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Ultrasonic welding apparatus
Assignee: DR LEHFELDT AND CO GmbH
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Filing: 1962-10-31
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Granted: 1969-02-11
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Expires: 1982-10-31
Abstract
No abstract record available.
Inventors
- 👤 Reimar Pohlman
- 👤 Roland Sievers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:26
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81427; B29C66/81429; B23; B23K; B23K20/00; B23K20/10; B23K20/106; B29C65/00; B29C65/02; B29C65/08; B29C65/081; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/20; B29C66/21; B29C66/40; B29C66/41; B29C66/43; B29C66/812; B29C66/8126; B29C66/81265; B29C66/816; B29C66/8161; B29C66/8167; B29C66/8169; B29C66/82; B29C66/824; B29C66/8242; B29C66/83; B29C66/832; B29C66/8322; B29C66/84; B29C66/845; B29C66/90; B29C66/92; B29C66/924; B29C66/9241; B29C66/92441; B29C66/92443; B29C66/929; B29C66/9292; B29C66/92921; B29C66/96; B29C66/967; B29C66/9672; B31; B31F; B31F5/00; B31F5/008; B29C66/8122; B29C66/94; B29C66/944
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN AN APPARTUS FOR WELDING ULTRASONICALLY, A SONOTRODE HAVING A TIP PROVIDED WITH STRIATIONS FORMING A ROUGH SURFACE HAVING PROJECTIONS SPACED FROM EACH OTHER AT A DISTANCE OF AT LEAST ONE-TENTH OF A MILLIMETER AND WHICH ENGAGES THE MATERIAL WHICH IS TO BE WELDED AND WHICH WHEN PRESSED AGAINST THE MATERIAL WILL, BECAUSE OF ITS ROUGH SURFACE, SUBSTANTIALLY ELIMINATE ANY RELATIVE MOVEMENT BETWEEN THE MATERIAL WHICH IS TO BE WELDED AND THE TIP OF THE SONOTRODE.
Claim 2
Dependent Claim
76 words
IN AN APPARTUS FOR WELDING ULTRASONICALLY, A SONOTRODE HAVING A TIP PROVIDED WITH STRIATIONS FORMING A ROUGH SURFACE HAVING PROJECTIONS SPACED FROM EACH OTHER AT A DISTANCE OF AT LEAST ONE-TENTH OF A MILLIMETER AND WHICH ENGAGES THE MATERIAL WHICH IS TO BE WELDED AND WHICH WHEN PRESSED AGAINST THE MATERIAL WILL, BECAUSE OF ITS ROUGH SURFACE, SUBSTANTIALLY ELIMINATE ANY RELATIVE MOVEMENT BETWEEN THE MATERIAL WHICH IS TO BE WELDED AND THE TIP OF THE SONOTRODE.
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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) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |