US2697057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a diaphragm
Assignee: Ortho Pharmaceutical Corp
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Filing: 1951-07-25
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Granted: 1954-12-14
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Expires: 1971-07-25
Abstract
No abstract record available.
Inventors
- 👤 Frank A Senger
- 👤 Richard B Sellars
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:01
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/005; A; A61; A61F; A61F6/00; A61F6/06; A61F6/08; B29L; B29L2031/00; B29L2031/755; Y; Y10; Y10S; Y10S264/00; Y10S264/76; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/1052; Y10T156/1054
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
THE METHOD OF MAKING A DIAPHRAGM WHICH COMPRISES POSITIONING A SHEET OF FLEXIBLE, IMPERMEABLE, SYNTHETIC THERMOPLASTIC SUBSTANCE ON ONE SIDE OF A CIRCULAR RIM OF SYNTHETIC, RESILIENT, THERMOPLASTIC SUBSTANCE, HAVING A DIAMETER LESS THAN THE SHEET, SO THAT THE SHEET IS SUBSTANTIALLY FLAT, IN TOUCHING RELATION TO THE RIM, AND EXTENDS BEYOND THE OUTER CIRCUMFERENCE OF THE RIM, AND HOLDING IN PLACE THE PORTION OF THE SHEET EXTENDING BEYOND THE OUTER CIRCUMFERENCE OF THE RIM, DEFORMING THE SHEET AT AN ELEVATED TEMPERATURE INTO A DOME, HEAT SEALING THE SHEET TO THE RIM, THE DOME BEING POSITIONED AT THE INNER CIRCUMFERENCE AND BEYOND THE RIM ON THE SIDE OPPOSITE THE SEAL OF THE SHEET TO THE RIM, AND REMOVING THE PORTION OF THE SHEET THEN EXTENDING BEYOND THE OUTER CIRCUMFERENCE OF THE RIM, WHEREBY A DIAPHRAGM IS MADE WITH A CONTINUOUS RIM INTEGRAL WITH A FLEXIBLE DOMESHAPED MEMBRANE.
Claim 2
Independent Claim
147 words
THE METHOD OF MAKING A DIAPHRAGM WHICH COMPRISES POSITIONING A SHEET OF FLEXIBLE, IMPERMEABLE, SYNTHETIC THERMOPLASTIC SUBSTANCE ON ONE SIDE OF A CIRCULAR RIM OF SYNTHETIC, RESILIENT, THERMOPLASTIC SUBSTANCE, HAVING A DIAMETER LESS THAN THE SHEET, SO THAT THE SHEET IS SUBSTANTIALLY FLAT, IN TOUCHING RELATION TO THE RIM, AND EXTENDS BEYOND THE OUTER CIRCUMFERENCE OF THE RIM, AND HOLDING IN PLACE THE PORTION OF THE SHEET EXTENDING BEYOND THE OUTER CIRCUMFERENCE OF THE RIM, DEFORMING THE SHEET AT AN ELEVATED TEMPERATURE INTO A DOME, HEAT SEALING THE SHEET TO THE RIM, THE DOME BEING POSITIONED AT THE INNER CIRCUMFERENCE AND BEYOND THE RIM ON THE SIDE OPPOSITE THE SEAL OF THE SHEET TO THE RIM, AND REMOVING THE PORTION OF THE SHEET THEN EXTENDING BEYOND THE OUTER CIRCUMFERENCE OF THE RIM, WHEREBY A DIAPHRAGM IS MADE WITH A CONTINUOUS RIM INTEGRAL WITH A FLEXIBLE DOMESHAPED MEMBRANE.
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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) | 1957-12-13 | 1958-06-14 | 1958-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-13 | 1962-06-14 | 1962-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-13 | 1966-06-14 | 1966-12-14 | $7700.00 | Window Closed / Lapsed |