US3392398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio telescope
Assignee: Government of the United States of America
•
Filing: 1961-03-23
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Granted: 1968-07-09
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Expires: 1981-03-23
Abstract
No abstract record available.
Inventors
- 👤 Philip N Bowditch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:06
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/02; H01Q3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A RADIO TELESCOPE COMPRISING A FIRST CIRCULAR TRACK DISPOSED IN A SUBSTANTIALLY HORIZONTAL PLANE, A FIRST SUPPORT STRUCTURE CONSTRAINED TO ROTATE ABOUT THE VERTICAL AXIS OF SAID FIRST TRACK, SAID STRUCTURE COMPRISING A SECOND CIRCULAR TRACK INCLINED IN A PLANE AT AN ANGLE OF FORTY-FIVE DEGREES FROM THE HORIZONTAL, AND A METALLIC REFLECTOR IN THE SHAPE OF A PORTION OF A PARABOLOID OF REVOLUTION SUPPORTED ON SAID SECOND TRACK AND ROTATABLE ABOUT A SECOND AXIS NORMAL TO THE PLANE OF SAID TRACK WITH THE AXIS OF SAID PARABOLOID WHICH DEFINES THE LINE OF SIGHT OF SAID TELESCOPE INCLINED AT AN ANGLE OF APPROXIMATELY FORTY-FIVE DEGREES FROM SAID SECOND AXIS, SAID PORTION BEING BOUNDED BY THE INTERSECTION OF SAID PARABOLOID SURFACE WITH A CYLINDRICAL SURFACE, WHEREIN THE AXIS OF SAID CYLINDRICAL SURFACE IS SUBSTANTIALLY SAID SECOND AXIS AND WHEREIN THE AXIS OF SAID PARABOLOID PASSES NEAR THE EDGE OF SAID PORTION.
Claim 2
Dependent Claim
150 words
A RADIO TELESCOPE COMPRISING A FIRST CIRCULAR TRACK DISPOSED IN A SUBSTANTIALLY HORIZONTAL PLANE, A FIRST SUPPORT STRUCTURE CONSTRAINED TO ROTATE ABOUT THE VERTICAL AXIS OF SAID FIRST TRACK, SAID STRUCTURE COMPRISING A SECOND CIRCULAR TRACK INCLINED IN A PLANE AT AN ANGLE OF FORTY-FIVE DEGREES FROM THE HORIZONTAL, AND A METALLIC REFLECTOR IN THE SHAPE OF A PORTION OF A PARABOLOID OF REVOLUTION SUPPORTED ON SAID SECOND TRACK AND ROTATABLE ABOUT A SECOND AXIS NORMAL TO THE PLANE OF SAID TRACK WITH THE AXIS OF SAID PARABOLOID WHICH DEFINES THE LINE OF SIGHT OF SAID TELESCOPE INCLINED AT AN ANGLE OF APPROXIMATELY FORTY-FIVE DEGREES FROM SAID SECOND AXIS, SAID PORTION BEING BOUNDED BY THE INTERSECTION OF SAID PARABOLOID SURFACE WITH A CYLINDRICAL SURFACE, WHEREIN THE AXIS OF SAID CYLINDRICAL SURFACE IS SUBSTANTIALLY SAID SECOND AXIS AND WHEREIN THE AXIS OF SAID PARABOLOID PASSES NEAR THE EDGE OF SAID PORTION.
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) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |