US3684607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of collapsible packaging tubes
Assignee: ANTHONY ST JOHN ROWBOTHAM
•
Filing: 1970-03-24
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Granted: 1972-08-15
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Expires: 1990-03-24
Abstract
Abstract APPARATUS FOR FORMING COLLAPSIBLE LAMINATED TUBES BY WRAPPING METAL FOIL AROUND A TUBE OF PLASTICS MATERIAL COMPRISES A MANDREL, MEANS FOR CONTINUOUSLY MOVING, E.G. EXTRUDING, A TUBE OF PLASTICS MATERIAL ALONG THE MANDREL, AT LEAST ONE SUPPLY OF METAL FOIL IN CONTINUOUS STRIP FORM, MEANS FOR WRAPPING THE METAL FOIL AROUND THE TUBE AS THE TUBE MOVES ALONG THE MANDREL, MEANS, E.G. ONE OR MORE INDUCTION COILS, FOR INDUCING HEAT INTO THE METAL FOIL, MEANS FOR PRESSING THE HEATED FOIL AGAINST THE TUBE SO AS TO CAUSE THE FOIL TO ADHERE TO THE TUBE TO FORM A LAMINATED TUBE, AND CUTTING MEANS FOR CUTTING THE MANINATED TUBE INTO REQUIRED LENGTHS. D R A W I N G
Inventors
- 👤 Cecil Edward Morris
- 👤 Anthony St John Rowbotham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:14
CPC Classifications
B; B29; B29C; B29C63/00; B29C63/02; B29C63/04; B29C63/06; B29C63/065; B21; B21D; B21D51/00; B21D51/16; B21D51/36; B29C48/00; B29C48/03; B29C48/09; B29C48/15; B29C48/151; B29C48/25; B29C48/30; B29C48/32; B29C48/34; B29C48/001; B29C48/0022; B29C48/10; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2023/10; B29K2023/12; B29K2025/00; B29K2027/00; B29K2027/06; B29K2069/00; B29K2077/00; B29K2105/00; B29K2105/0097; B29K2305/00; B29K2305/02; B29K2705/00; B29K2705/02; B29K2705/06; B29K2995/00; B29K2995/0037; B29K2995/0065; B29K2995/0067; B29L; B29L2009/00; B29L2009/003; B29L2023/00; B29L2023/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |