US3246112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polypropylene diaphragm assemblies
Assignee: Individual
•
Filing: 1964-04-06
•
Granted: 1966-04-12
•
Expires: 1984-04-06
Abstract
No abstract record available.
Inventors
- 👤 Donald R Adams
- 👤 Theodore H Schorr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:07
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/02; H01H13/12; H01H13/14; H01H13/26; H01H13/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A PRESSURE ACTUATABLE DIAPHRAGM ASSEMBLY MOVEABLE BETWEEN AN OUTWARD POSITION AND AN INWARD POSITION COMPRISING AN ESSENTIALLY CIRCULAR DISK OF A MATERIAL HAVING THE PROPERTIES OF POLYPROPYLENE; A MOUNTING RIM OF A SOLID SUBSTANCE, THE INNER DIAMETER OF SAID RIM SLIGHTLY EXCEEDNG THE OUTER DIAMETER OF SAID DISK; AND AN ANNULAR MEMBRANE INTEGRAL WITH SAID DISK AND FORMED OF THE SAME BODY OF MATERIAL THEREWITH, SAID ANNULAR MEMBRANE CONNECTING SAID DISK WITH SAID RIM, AND SAID ANNULAR MEMBRANE HAVING A THICKNESS OF BETWEEN ABOUT 2 AND ABOUT 30 MILS.
Claim 2
Dependent Claim
89 words
A PRESSURE ACTUATABLE DIAPHRAGM ASSEMBLY MOVEABLE BETWEEN AN OUTWARD POSITION AND AN INWARD POSITION COMPRISING AN ESSENTIALLY CIRCULAR DISK OF A MATERIAL HAVING THE PROPERTIES OF POLYPROPYLENE; A MOUNTING RIM OF A SOLID SUBSTANCE, THE INNER DIAMETER OF SAID RIM SLIGHTLY EXCEEDNG THE OUTER DIAMETER OF SAID DISK; AND AN ANNULAR MEMBRANE INTEGRAL WITH SAID DISK AND FORMED OF THE SAME BODY OF MATERIAL THEREWITH, SAID ANNULAR MEMBRANE CONNECTING SAID DISK WITH SAID RIM, AND SAID ANNULAR MEMBRANE HAVING A THICKNESS OF BETWEEN ABOUT 2 AND ABOUT 30 MILS.
References Cited (Backward Citations)
US3049603A
Cited
US3185806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |