Patent US1959804A successfully refreshed from Google Patents.
US3152384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming bowl shaped screen for electron discharge tubes
Assignee: TDK Micronas GmbH
•
Filing: 1960-05-17
•
Granted: 1964-10-13
•
Expires: 1980-05-17
Abstract
No abstract record available.
Inventors
- 👤 Michael F Toohig
- 👤 Albert J Knight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:19
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/41
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
THE METHOD OF FORMING AN INITIALLY FLAT FINE MESH METAL SCREEN INTO A BOWL-SHAPED TARGET ELECTRODE ASSEMBLY FOR A STORAGE TUBE COMPRISING THE STEPS OF: PROVIDING A METALLIC BACKING PLATE HAVING A BOWL-SHAPED CAVITY AND A DIELECTRIC LAYER ON THE SURFACE THEREOF; PLACING THE BACKING PLATE IN A SUPPORT STRUCTURE; PLACING A FLAT FINE MESH METAL SCREEN OVER SAID PLATE SO AS TO COVER SAID CAVITY; PLACING A RELATIVELY THIN DIAPHRAGM OVER SAID SCREEN; PLACING A HOLLOW COVER MEMBER OVER SAID DIAPHRAGM SO AS TO SURROUND THE AREA OF SAID CAVITY AND SEALING THE PERIPHERAL EDGE OF SAID COVER MEMBER TO FORM A PRESSURE CHAMBER WITH SAID DIAPHRAGM FORMING A WALL THEREOF; INTRODUCING GAS INTO SAID COVER MEMBER OVER SAID DIAPHRAGM OF SUFFICIENT PRESSURE TO PRESSURE FORM SAID DIAPHRAGM AND UNDERLYING SCREEN INTO SAID CAVITY TO BEAR AGAINST SAID DIELECTRIC SURFACE; HEATING SAID PLATE TO A SUFFICIENT TEMPERATURE FOR A SUFFICIENT TIME TO SOFTEN SAID LAYER AND FUSE SAID SCREEN THERETO; TERMINATING SAID HEATING AND COOLING SAID PLATE TO RESOLIDIFY SAID LAYER WITH SAID SCREEN FUSED THERETO; REMOVING SAID PRESSURE AND SAID COVER MEMBER; AND STRIPPING SAID DIAPHRAGM FROM SAID SCREEN.
Claim 2
Independent Claim
191 words
THE METHOD OF FORMING AN INITIALLY FLAT FINE MESH METAL SCREEN INTO A BOWL-SHAPED TARGET ELECTRODE ASSEMBLY FOR A STORAGE TUBE COMPRISING THE STEPS OF: PROVIDING A METALLIC BACKING PLATE HAVING A BOWL-SHAPED CAVITY AND A DIELECTRIC LAYER ON THE SURFACE THEREOF; PLACING THE BACKING PLATE IN A SUPPORT STRUCTURE; PLACING A FLAT FINE MESH METAL SCREEN OVER SAID PLATE SO AS TO COVER SAID CAVITY; PLACING A RELATIVELY THIN DIAPHRAGM OVER SAID SCREEN; PLACING A HOLLOW COVER MEMBER OVER SAID DIAPHRAGM SO AS TO SURROUND THE AREA OF SAID CAVITY AND SEALING THE PERIPHERAL EDGE OF SAID COVER MEMBER TO FORM A PRESSURE CHAMBER WITH SAID DIAPHRAGM FORMING A WALL THEREOF; INTRODUCING GAS INTO SAID COVER MEMBER OVER SAID DIAPHRAGM OF SUFFICIENT PRESSURE TO PRESSURE FORM SAID DIAPHRAGM AND UNDERLYING SCREEN INTO SAID CAVITY TO BEAR AGAINST SAID DIELECTRIC SURFACE; HEATING SAID PLATE TO A SUFFICIENT TEMPERATURE FOR A SUFFICIENT TIME TO SOFTEN SAID LAYER AND FUSE SAID SCREEN THERETO; TERMINATING SAID HEATING AND COOLING SAID PLATE TO RESOLIDIFY SAID LAYER WITH SAID SCREEN FUSED THERETO; REMOVING SAID PRESSURE AND SAID COVER MEMBER; AND STRIPPING SAID DIAPHRAGM FROM SAID SCREEN.
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) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |