Patent US607825A successfully refreshed from Google Patents.
Patent US3355601A successfully refreshed from Google Patents.
US3355601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supervisory control system using a ferrite transformer and a transistor
Assignee: FRANZ BAUMGARTNER FABRIK ELEKTRISCHER APPARATE
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Filing: 1965-10-22
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Granted: 1967-11-28
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Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Klein Johann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:06
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/097
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A SUPERVISORY SIGNALLING SYSTEM FOR DETECTING THE FAILURE OF ONE OF A PLURALITY OF COMPATIBLE LIGHT GROUPS WHEREIN EACH GROUP MAY INCLUDE AN UNEQUAL NUMBER OF PARALLEL CONNECTED LIGHTS, COMPRISING: (A) A SEPARATE FEED CONDUCTOR FOR EACH LIGHT GROUP, (B) A FERRITE CORE TRANSFORMER FOR EACH FEED CONDUCTOR HAVING ITS PRIMARY WINDING CONNECTED IN SERIES IN THE FEED CONDUCTOR, (C) A DIODE-CAPACITOR FILTER NETWORK FOR EACH TRANSFORMER CONNECTED TO THE SECONDARY WINDING OF THE TRANSFORMER, (D) A TRANSISTOR, (E) A DIODE GATE FOR EACH FILTER NETWORK CONNECTED BETWEEN THE FILTER NETWORK AND THE BASE TERMINAL OF THE TRANSISTOR, AND (F) A SOURCE OF BIASING VOLTAGE CONNECTED TO EACH DIODE GATE, WHEREBY THE INTERRUPTION OF CURRENT FLOW IN ANY FEED CONDUCTOR UNBLOCKS ITS ASSOCIATED DIODE GATE AND THE BIASING VOLTAGE RENDERS THE TRANSISTOR NON-CONDUCTIVE.
Claim 2
Dependent Claim
133 words
A SUPERVISORY SIGNALLING SYSTEM FOR DETECTING THE FAILURE OF ONE OF A PLURALITY OF COMPATIBLE LIGHT GROUPS WHEREIN EACH GROUP MAY INCLUDE AN UNEQUAL NUMBER OF PARALLEL CONNECTED LIGHTS, COMPRISING: (A) A SEPARATE FEED CONDUCTOR FOR EACH LIGHT GROUP, (B) A FERRITE CORE TRANSFORMER FOR EACH FEED CONDUCTOR HAVING ITS PRIMARY WINDING CONNECTED IN SERIES IN THE FEED CONDUCTOR, (C) A DIODE-CAPACITOR FILTER NETWORK FOR EACH TRANSFORMER CONNECTED TO THE SECONDARY WINDING OF THE TRANSFORMER, (D) A TRANSISTOR, (E) A DIODE GATE FOR EACH FILTER NETWORK CONNECTED BETWEEN THE FILTER NETWORK AND THE BASE TERMINAL OF THE TRANSISTOR, AND (F) A SOURCE OF BIASING VOLTAGE CONNECTED TO EACH DIODE GATE, WHEREBY THE INTERRUPTION OF CURRENT FLOW IN ANY FEED CONDUCTOR UNBLOCKS ITS ASSOCIATED DIODE GATE AND THE BIASING VOLTAGE RENDERS THE TRANSISTOR NON-CONDUCTIVE.
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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |