US3205108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making wound tubular articles of varying cross-section
Assignee: National Castings Co
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Filing: 1962-05-17
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Granted: 1965-09-07
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Expires: 1982-05-17
Abstract
No abstract record available.
Inventors
- 👤 William B Wilkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:27
CPC Classifications
B; B31; B31C; B31C1/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
139 words
IN A METHOD OF MANUFACTURING A TUBULAR WALL, THE STEPS OF: (A) WRAPPING A THIN FLEXIBLE SHEET MATERIAL OF CONTINUOUS LENGTH ABOUT A SUPPORT TO SUPERIMPOSE SUCCESSIVE WRAPS TIGHTLY OVER PRECEDING WRAPS IN THE FORM OF A LAMINATED TUBULAR WALL; (B) SUPPORTING THE ENTIE INNER SURFACE OF SAID WALL BY SAID SUPPORT EXCEPT FOR A GAP IN THE SUPPORT BETWEEN PORTIONS WHICH IF PROJECTGED WOULD MEET IN A DIHEDRAL ANGLE EXTENDING LENGTHWISE OF THE SUPPORT; (C) AFTER COMPLETION OF THE WRAPPING STEP, SUPPORTING THE ENTIRE INTERIOR SURFACE OF THAT PORTION OF THE WALL BRIDGING SAID GAP WHILE CONFORMING TO A DESIRED CONCAVO-CONVEX CONTOUR TO COMPLETE THE INNER CONTOUR OF THE WALL; AND (D) SUBJECTING THE LAMINATED PRODUCT TOA LAMINAEBONDING TREATMENT WHICH INCLUDES APPLICATION OF PRESSURE TO SUBSTANTIALLY THE ENTIRE EXTERIOR SURFACE OF SAID PRODUCT WHILE SUPPORTED BY THE SUPPORTS.
Claim 2
Dependent Claim
139 words
IN A METHOD OF MANUFACTURING A TUBULAR WALL, THE STEPS OF: (A) WRAPPING A THIN FLEXIBLE SHEET MATERIAL OF CONTINUOUS LENGTH ABOUT A SUPPORT TO SUPERIMPOSE SUCCESSIVE WRAPS TIGHTLY OVER PRECEDING WRAPS IN THE FORM OF A LAMINATED TUBULAR WALL; (B) SUPPORTING THE ENTIE INNER SURFACE OF SAID WALL BY SAID SUPPORT EXCEPT FOR A GAP IN THE SUPPORT BETWEEN PORTIONS WHICH IF PROJECTGED WOULD MEET IN A DIHEDRAL ANGLE EXTENDING LENGTHWISE OF THE SUPPORT; (C) AFTER COMPLETION OF THE WRAPPING STEP, SUPPORTING THE ENTIRE INTERIOR SURFACE OF THAT PORTION OF THE WALL BRIDGING SAID GAP WHILE CONFORMING TO A DESIRED CONCAVO-CONVEX CONTOUR TO COMPLETE THE INNER CONTOUR OF THE WALL; AND (D) SUBJECTING THE LAMINATED PRODUCT TOA LAMINAEBONDING TREATMENT WHICH INCLUDES APPLICATION OF PRESSURE TO SUBSTANTIALLY THE ENTIRE EXTERIOR SURFACE OF SAID PRODUCT WHILE SUPPORTED BY THE SUPPORTS.
Claim 3
Dependent Claim
87 words
A MANDREL FOR WRAPPING A SHEET MATERIAL INTO A LAMINATED TUBULAR PRODUCT COMPRISING: (A) MEANS IN CONCENTRIC RELATION WITH AN AXIS OF ROTATION FOR SAID MANDREL FOR ROTATABLY CONNECTING THE MANDREL WITH A SUPPORT THEREFOR; AND (B) A WALL HAVING A POLYGONAL SUBSTANTIALLY-CONTINUOUS CROSS SECTION IN CENTERED PERPENDICULAR RELATION WITH SAID AXIS; SAID WALL COMPRISING A CORNER SECTION BETWEEN TWO FIXED SIDE SECTIONS IN HINGED RELATION WITH ONE OF THE FIXED SECTINS ALONG AN AXIS EXTENDING LENGTHWISE OF SAID AXIS AND SWINGABLE INWARDLY OF SAID CROSS SECTION.
Claim 4
Dependent Claim
87 words
A MANDREL FOR WRAPPING A SHEET MATERIAL INTO A LAMINATED TUBULAR PRODUCT COMPRISING: (A) MEANS IN CONCENTRIC RELATION WITH AN AXIS OF ROTATION FOR SAID MANDREL FOR ROTATABLY CONNECTING THE MANDREL WITH A SUPPORT THEREFOR; AND (B) A WALL HAVING A POLYGONAL SUBSTANTIALLY-CONTINUOUS CROSS SECTION IN CENTERED PERPENDICULAR RELATION WITH SAID AXIS; SAID WALL COMPRISING A CORNER SECTION BETWEEN TWO FIXED SIDE SECTIONS IN HINGED RELATION WITH ONE OF THE FIXED SECTINS ALONG AN AXIS EXTENDING LENGTHWISE OF SAID AXIS AND SWINGABLE INWARDLY OF SAID CROSS SECTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |