US3757168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rom disturbances apparatus for protecting data processing installations and the like f
Assignee: Individual
•
Filing: 1971-05-03
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Granted: 1973-09-04
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Expires: 1991-05-03
Abstract
Abstract Apparatus is described for protecting data processing installations, particularly, telecommunications exchanges from voltage and current surges caused by external influences, such as lightning and from radio frequency disturbances generated from within. At the installation''s main distributor to which line pairs are connected, each line of a pair has an inductance coil connected in series therewith, and the coils in a line pair are connected in opposition to each other. Each line has a voltage diverter, preferably, of the spark gap type connected to ground.
Inventors
- 👤 F Kreuzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:25
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/02; H04L25/08; H04L25/085
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
118 words
Apparatus for protecting a data processing installation or the like from externally caused voltage and current surges and from radio frequency interference comprising: inductor coils connected in series with transmission lines, which transmission lines are connected to said installation, each said coil in a given one of said transmission lines being arranged relative to said other coils in other transmission lines so that the magnetic fluxes from said one coil will oppose the magnetic fluxes from said other coils, when current is flowing through said coils in the same direction, and voltage diverting means connecting each said transmission line to ground, each said voltage means being rendered conductive only upon the appearance thereacross of a predetermined voltage magnitude.
Claim 2
Dependent Claim
118 words
Apparatus for protecting a data processing installation or the like from externally caused voltage and current surges and from radio frequency interference comprising: inductor coils connected in series with transmission lines, which transmission lines are connected to said installation, each said coil in a given one of said transmission lines being arranged relative to said other coils in other transmission lines so that the magnetic fluxes from said one coil will oppose the magnetic fluxes from said other coils, when current is flowing through said coils in the same direction, and voltage diverting means connecting each said transmission line to ground, each said voltage means being rendered conductive only upon the appearance thereacross of a predetermined voltage magnitude.
Claim 3
Dependent Claim
22 words
The apparatus defined in claim 1, wherein said coils and voltage diverting means are connected at the main distributor of said installation.
Claim 4
Dependent Claim
16 words
The apparatus defined in claim 1, wherein said voltage diverting means comprises the spark gap means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |