US3136919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gaseous discharge control device
Assignee: Varian Medical Systems Inc
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Filing: 1961-04-03
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Granted: 1964-06-09
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Expires: 1981-04-03
Abstract
No abstract record available.
Inventors
- 👤 Eugene L Street
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:37
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/02; H01J17/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A GASEOUS DISCHARGE TUBE FOR CONTROL OF TRANSMISSION OF MICROWAVE FREQUENCY ENERGY COMPRISING A METALLIC PLATE MEMBER DEFINING A CENTRAL RECTANGULAR OPENING WITH A COATING OF DIELECTRIC MATERIAL BONDED TO A PORTION OF THE SURFACES ADJACENT TO SAID OPENING, AN INNER CYLINDRICAL MEMBER OF A DIELECTRIC MATERIAL DISPOSED WITHIN SAID OPENING WITH ITS AXIS LYING WITHIN THE PLANE OF THE PLATE MEMBER, A PAIR OF SEMI-CYLINDRICAL MEMBERS OF A DIELECTRIC MATERIAL SEALED TO SAID COATING ALONG ALL SIDES OF SAID OPENING AND SPACED FROM SAID INNER CYLINDER A CRITICALLY SHORT DISTANCE TO DEFINE AN ANNULAR GAP, SAID SEMI-CYLINDRICAL MEMBERS BEING SEALED ALONG THE LONGER OPPOSITELY DISPOSED SIDES OF SAID OPENING IN A MANNER TO PROVIDE FOR THE PROTRUSION OF AN ADJACENT METALLIC EDGE AT TWO RELATIVELY WIDELY SEPARATED LOCATIONS WITHIN THE ANNULAR GAP, SAID INNER CYLINDER AND SEMI-CYLINDRICAL MEMBERS DEFINING A VACUUM TIGHT ENVELOPE AND A FILLING OF AN IONIZABLE ATMOSPHERE CONTAINED THEREIN.
Claim 2
Dependent Claim
153 words
A GASEOUS DISCHARGE TUBE FOR CONTROL OF TRANSMISSION OF MICROWAVE FREQUENCY ENERGY COMPRISING A METALLIC PLATE MEMBER DEFINING A CENTRAL RECTANGULAR OPENING WITH A COATING OF DIELECTRIC MATERIAL BONDED TO A PORTION OF THE SURFACES ADJACENT TO SAID OPENING, AN INNER CYLINDRICAL MEMBER OF A DIELECTRIC MATERIAL DISPOSED WITHIN SAID OPENING WITH ITS AXIS LYING WITHIN THE PLANE OF THE PLATE MEMBER, A PAIR OF SEMI-CYLINDRICAL MEMBERS OF A DIELECTRIC MATERIAL SEALED TO SAID COATING ALONG ALL SIDES OF SAID OPENING AND SPACED FROM SAID INNER CYLINDER A CRITICALLY SHORT DISTANCE TO DEFINE AN ANNULAR GAP, SAID SEMI-CYLINDRICAL MEMBERS BEING SEALED ALONG THE LONGER OPPOSITELY DISPOSED SIDES OF SAID OPENING IN A MANNER TO PROVIDE FOR THE PROTRUSION OF AN ADJACENT METALLIC EDGE AT TWO RELATIVELY WIDELY SEPARATED LOCATIONS WITHIN THE ANNULAR GAP, SAID INNER CYLINDER AND SEMI-CYLINDRICAL MEMBERS DEFINING A VACUUM TIGHT ENVELOPE AND A FILLING OF AN IONIZABLE ATMOSPHERE CONTAINED THEREIN.
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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |