US3733238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for vibration welding of sheet materials
Assignee: Crompton and Knowles Corp
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Filing: 1971-12-13
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Granted: 1973-05-15
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Expires: 1991-12-13
Abstract
Abstract Ultrasonic apparatus for welding thermoplastic sheetlike elements wherein a plurality of spaced ultrasonic vibration transmitting members having working surfaces in contact with one side of the sheet-like elements. The working surfaces cooperate with opposing spaced anvil surfaces located on the opposite side of the sheetlike elements for producing welds in the material therebetween. Means are provided to advance the sheet-like elements between the members and the anvil surfaces, said members being arranged so that every point across the width of one of the sheet-like elements comes into contact with at least one of said working surfaces.
Inventors
- 👤 D Long
- 👤 E Rust
- 👤 S Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:03
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/08; B29C65/083; B29C65/086; B32; B32B; B32B27/00; B32B27/06; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/20; B29C66/21; B29C66/23; B29C66/234; B29C66/345; B29C66/3452; B29C66/40; B29C66/41; B29C66/45; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81411; B29C66/81415; B29C66/81433; B29C66/8145; B29C66/81463; B29C66/81467; B29C66/81469; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/83415; B29C66/83421; B32B27/08; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B32B7/00; B32B7/04; B32B7/05; B29C66/73921; B29C66/8351; B29C66/83511; B29C66/83521; B29K; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/0854; B32B2250/00; B32B2250/20; B32B2305/00; B32B2305/10; B32B2305/18; B32B2310/00; B32B2310/028; B32B2601/00; B32B5/02; B32B5/022
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) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |