US3305884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for molding insoles
Assignee: COLOUIAL BOARD Co
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Filing: 1964-09-28
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Granted: 1967-02-28
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Expires: 1984-09-28
Abstract
No abstract record available.
Inventors
- 👤 Richard J Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:39
CPC Classifications
A; A43; A43D; A43D25/00; A43D25/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A METHOD OF PRODUCING AN INSOLE OF PERFECT LAST CONFORMITY FOR USE IN ARTICLES OF FOOTWEAR AND THE LIKE COMPRISING THE STEPS OF PROVIDING AN INSOLE BLANK HAVING IN AT LEAST THE SHANK PORTION THEREOF A MOLDABLE PLASTIC; DIELECTRICALLY HEATING AT LEAST THE SHANK PORTION OF SAID INSOLE TO THE MOLDING TEMPERATURE OF THE PLASTIC; IMPARTING TO THE HEATED SHANK PORTION OF THE INSOLE AN EXAGGERATED SHANK CONFIGURATION OF GREATER CURVATURE THAN THAT EXHIBITED BY THE LAST TO WHICH THE INSOLE IS TO CONFORM; AND SUBSEQUENTLY MOLDING THE HEATED INSOLE TO THE LAST TO PROVIDE FULL INTIMATE CONTACT BETWEEN THE INSOLE AND THE LAST.
Claim 2
Independent Claim
104 words
A METHOD OF PRODUCING AN INSOLE OF PERFECT LAST CONFORMITY FOR USE IN ARTICLES OF FOOTWEAR AND THE LIKE COMPRISING THE STEPS OF PROVIDING AN INSOLE BLANK HAVING IN AT LEAST THE SHANK PORTION THEREOF A MOLDABLE PLASTIC; DIELECTRICALLY HEATING AT LEAST THE SHANK PORTION OF SAID INSOLE TO THE MOLDING TEMPERATURE OF THE PLASTIC; IMPARTING TO THE HEATED SHANK PORTION OF THE INSOLE AN EXAGGERATED SHANK CONFIGURATION OF GREATER CURVATURE THAN THAT EXHIBITED BY THE LAST TO WHICH THE INSOLE IS TO CONFORM; AND SUBSEQUENTLY MOLDING THE HEATED INSOLE TO THE LAST TO PROVIDE FULL INTIMATE CONTACT BETWEEN THE INSOLE AND THE LAST.
References Cited (Backward Citations)
US2934771A
Cited
US2926435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |