US3297802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for forming a composite hollow cylinder of foamed plastic
Assignee: Kimberly Clark Tissue Co
•
Filing: 1963-09-04
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Granted: 1967-01-10
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Expires: 1983-09-04
Abstract
No abstract record available.
Inventors
- 👤 William R Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:35
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/80; B29C53/82; B29C53/821; B29C53/825; B29C53/827; B29C41/00; B29C41/02; B29C41/04; B29C41/24; B29C41/26; B29C41/265; B29C44/00; B29C44/20; B29C44/32; B29C44/322; B29C44/324; B29C53/56; B29C53/58; B29C53/72; B29C41/042; B29L; B29L2023/00; B29L2023/22; B29L2023/225
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A METHOD OF FORMING TUBING WHICH COMPRISES INTRODUCING SHEETS OF FLEXIBLE TUBE FORMING MATERIAL INTO A FORMING CAGE HAVING A SUBSTANTIALLY UNOBSTRUCTED CENTRAL REGION, ROTATING THE SHEETS ABOUT THE INTERIOR OF THE FORMING CAGE AT A VELOCITY SUFFICIENT TO GENERATE CENTRIFUGAL FORCE FOR HOLDING SAID SHEETS AGAINST THE INTERIOR OF THE CAGE, AND SIMULTANEOUSLY ADVANCING THE TUBE THUS FORMED THROUGH AND OUT OF SAID CAGE.
Claim 2
Independent Claim
65 words
A METHOD OF FORMING TUBING WHICH COMPRISES INTRODUCING SHEETS OF FLEXIBLE TUBE FORMING MATERIAL INTO A FORMING CAGE HAVING A SUBSTANTIALLY UNOBSTRUCTED CENTRAL REGION, ROTATING THE SHEETS ABOUT THE INTERIOR OF THE FORMING CAGE AT A VELOCITY SUFFICIENT TO GENERATE CENTRIFUGAL FORCE FOR HOLDING SAID SHEETS AGAINST THE INTERIOR OF THE CAGE, AND SIMULTANEOUSLY ADVANCING THE TUBE THUS FORMED THROUGH AND OUT OF SAID CAGE.
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Cited
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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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |