US2603579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacturing plywood tubes
Assignee: Mengel Co
•
Filing: 1948-05-10
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Granted: 1952-07-15
•
Expires: 1968-05-10
Abstract
No abstract record available.
Inventors
- 👤 Kramer Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:38
CPC Classifications
B; B27; B27D; B27D1/00; B27D1/04; B27D1/08; B27D1/083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
APPARATUS FOR FORMING A STACK OF INDIVIDUAL FLEXIBLE SHEETS OF WOOD WITH ADHESIVE THEREBETWEEN INTO A TUBE COMPRISING A MANDREL ROTATABLE ABOUT A GIVEN AXIS AND ADAPTED TO HAVE SAID SHEETS WRAPPED THEREON; AND A PLURALITY OF MOBILE PRESSURE UNITS DISPOSED RADIALLY OF SAID AXIS ON A COMMON CARRIER AND MOUNTED FOR ROTATION ABOUT SAID AXIS WITH SAID MANDREL; EACH PRESSURE UNIT HAVING AN INFLATABLE MEMBER FOR ALIGNMENT WITH AND ADAPTED TO EXERT AND RETAIN PRESSURE ON A PORTION OF SAID SHEETS AT PLACES APPLIED AFTER SAID PORTION HAS BEEN LAID ON SAID MANDREL.
Claim 2
Dependent Claim
94 words
APPARATUS FOR FORMING A STACK OF INDIVIDUAL FLEXIBLE SHEETS OF WOOD WITH ADHESIVE THEREBETWEEN INTO A TUBE COMPRISING A MANDREL ROTATABLE ABOUT A GIVEN AXIS AND ADAPTED TO HAVE SAID SHEETS WRAPPED THEREON; AND A PLURALITY OF MOBILE PRESSURE UNITS DISPOSED RADIALLY OF SAID AXIS ON A COMMON CARRIER AND MOUNTED FOR ROTATION ABOUT SAID AXIS WITH SAID MANDREL; EACH PRESSURE UNIT HAVING AN INFLATABLE MEMBER FOR ALIGNMENT WITH AND ADAPTED TO EXERT AND RETAIN PRESSURE ON A PORTION OF SAID SHEETS AT PLACES APPLIED AFTER SAID PORTION HAS BEEN LAID ON SAID MANDREL.
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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) | 1955-07-15 | 1956-01-14 | 1956-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-15 | 1960-01-14 | 1960-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-15 | 1964-01-14 | 1964-07-15 | $7700.00 | Window Closed / Lapsed |