Patent US4253131A successfully refreshed from Google Patents.
US4253131A
Expired / Lapsed
US
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Repeater overload circuit
Assignee: AT&T Inc
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Filing: 1978-12-29
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Granted: 1981-02-24
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Expires: 1998-12-29
Abstract
Abstract A bilateral repeater for communication transmission lines is described in which the opposite directions of transmission are separated by frequency bands for amplification. The repeater is powered from a power conversion unit energized from the line potential. The repeater includes three-electrode gas tube breakdown devices connected across the repeater for each conductor of the transmission line. The third electrodes in the gas tubes are cross-connected together with no ground connection.
Inventors
- 👤 Barry S. Bosik
- 👤 Jeffrey H. Derby
- 👤 Tadikonda N. Rao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:21
CPC Classifications
H; H02; H02H; H02H9/00; H02H9/04; H02H9/06; H04; H04B; H04B3/00; H04B3/02; H04B3/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A high voltage protection circuit for electronic components connected between segments of a transmission line CHARACTERIZED BY a three-electrode gas voltage breakdown device connected in series with each of the corresponding conductive paths of said transmission line segments, said voltage brekdown device providing, by way of two of the electrodes of said voltage breakdown device, nongrounded current conduction between said conductive paths in the voltage breakdown state, and a nongrounded current conducting connection between the third electrodes of said voltage breakdown devices.
Claim 2
Dependent Claim
82 words
A high voltage protection circuit for electronic components connected between segments of a transmission line CHARACTERIZED BY a three-electrode gas voltage breakdown device connected in series with each of the corresponding conductive paths of said transmission line segments, said voltage brekdown device providing, by way of two of the electrodes of said voltage breakdown device, nongrounded current conduction between said conductive paths in the voltage breakdown state, and a nongrounded current conducting connection between the third electrodes of said voltage breakdown devices.
References Cited (Backward Citations)
US4106070A
Cited
US4161008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-24 | 1984-08-25 | 1985-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-24 | 1988-08-25 | 1989-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-24 | 1992-08-25 | 1993-02-24 | $7700.00 | Window Closed / Lapsed |