US2889258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making hollow body of non-uniform wall thickness
Assignee: CAMIN LAB Inc
•
Filing: 1956-06-08
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Granted: 1959-06-02
•
Expires: 1976-06-08
Abstract
No abstract record available.
Inventors
- 👤 Fialkoff Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:15
CPC Classifications
H; H01; H01P; H01P3/00; H01P3/12; B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/16; C; C25; C25D; C25D1/00; C25D1/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49016
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
THE METHOD OF FORMING A HOLLOW BODY HAVING AN INNER WALL LINED WITH A METALLIC LAYER, SAID LAYER BEING OF A SMALLER THICKNESS IN ONE ANNULAR SECTION OF THE BODY AND OF A GREATER THICKNES IN ANOTHER ANNULAR SECTION THEREOF, WHICH COMPRISES THE STEPS OF PROVIDING A MANDREL DIMENSIONED TO CONFORM TO THE INTERIOR OF SAID BODY, ELECTRO-DEPOSITING ON SAID MANDREL A METALLIC COATING TO A DEPTH EQUALING SIAD SMALLER THICKNESS, MASKING AN ANNULAR PORTION OF SAID COATING CORRESPONDING TO SAID ONE ANNULAR SECTION OF THE BODY, ELECTRO-DEPOSITING ON THE UNMASKED PART OF SAID COATING AN ADDITIONAL AMOUNT OF THE SAME METAL UNTIL SAID UNMASKED PART HAS REACHED A DEPTH EQUALING SAID GREATER THICKNESS, SUBSEQUENTLY MOLDING A RESINOUS SHELL AROUND THE COATED MANDREL, AND REMOVING SAID MANDREL WHILE LEAVING SAID SHELL INTACT.
Claim 2
Independent Claim
132 words
THE METHOD OF FORMING A HOLLOW BODY HAVING AN INNER WALL LINED WITH A METALLIC LAYER, SAID LAYER BEING OF A SMALLER THICKNESS IN ONE ANNULAR SECTION OF THE BODY AND OF A GREATER THICKNES IN ANOTHER ANNULAR SECTION THEREOF, WHICH COMPRISES THE STEPS OF PROVIDING A MANDREL DIMENSIONED TO CONFORM TO THE INTERIOR OF SAID BODY, ELECTRO-DEPOSITING ON SAID MANDREL A METALLIC COATING TO A DEPTH EQUALING SIAD SMALLER THICKNESS, MASKING AN ANNULAR PORTION OF SAID COATING CORRESPONDING TO SAID ONE ANNULAR SECTION OF THE BODY, ELECTRO-DEPOSITING ON THE UNMASKED PART OF SAID COATING AN ADDITIONAL AMOUNT OF THE SAME METAL UNTIL SAID UNMASKED PART HAS REACHED A DEPTH EQUALING SAID GREATER THICKNESS, SUBSEQUENTLY MOLDING A RESINOUS SHELL AROUND THE COATED MANDREL, AND REMOVING SAID MANDREL WHILE LEAVING SAID SHELL INTACT.
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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) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |