US3309634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission line attenuators for high power
Assignee: Hazeltine Research Inc
•
Filing: 1964-12-14
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Granted: 1967-03-14
•
Expires: 1984-12-14
Abstract
No abstract record available.
Inventors
- 👤 Harold A Wheeler
- 👤 David S Lerner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:34
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/24; H01P1/26; H01P1/266; H01P1/22; H01P1/222
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
AN ATTENUATOR COMPRISING: A PLURALITY OF SPACED IRON SHEETS IN COMMON ELECTRICAL CONTACT AT THE OUTER EDGES WITH THE CENTRAL PORTIONS SPACED AND NONCONTACTING AND HAVING OPENINGS IN THE CENTRAL PORTIONS COOPERATING TO PERMIT PROPAGATION OF ELECTROMAGNETIC WAVES; THE ATTENUATOR BEING SO CONSTRUCTED AND ARRANGED THAT CURRENTS ASSOCIATED WITH SUCH WAVES ARE MADE TO TRAVEL A LONG ZIGZAG PATH ALONG THE SURFACE OF EACH SHEET OUT TO THE COMMON CONTACT, BACK IN AGAIN ALONG THE SURFACE OF THE NEXT SHEET, ETC., AND THE SURFACE RESISTANCE ENCOUNTERED ALONG SAID PATH DISSIPATES ENERGY WHILE THE RESULTING HEAT IS CONDUCTED AWAY THROUGH THE SHEETS.
Claim 2
Dependent Claim
101 words
AN ATTENUATOR COMPRISING: A PLURALITY OF SPACED IRON SHEETS IN COMMON ELECTRICAL CONTACT AT THE OUTER EDGES WITH THE CENTRAL PORTIONS SPACED AND NONCONTACTING AND HAVING OPENINGS IN THE CENTRAL PORTIONS COOPERATING TO PERMIT PROPAGATION OF ELECTROMAGNETIC WAVES; THE ATTENUATOR BEING SO CONSTRUCTED AND ARRANGED THAT CURRENTS ASSOCIATED WITH SUCH WAVES ARE MADE TO TRAVEL A LONG ZIGZAG PATH ALONG THE SURFACE OF EACH SHEET OUT TO THE COMMON CONTACT, BACK IN AGAIN ALONG THE SURFACE OF THE NEXT SHEET, ETC., AND THE SURFACE RESISTANCE ENCOUNTERED ALONG SAID PATH DISSIPATES ENERGY WHILE THE RESULTING HEAT IS CONDUCTED AWAY THROUGH THE SHEETS.
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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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |