Patent US3999126A successfully refreshed from Google Patents.
US3246227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency transformer including safety circuit
Assignee: AGIE A G fur IND ELECTRONIK
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Filing: 1962-12-10
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Granted: 1966-04-12
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Expires: 1982-12-10
Abstract
No abstract record available.
Inventors
- 👤 Strohmeier Walter
- 👤 Quiros Julio Gonsales Berna De
- 👤 Ullmann Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:33
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/145; H02M7/155; H02M7/1555; B; B23; B23H; B23H1/00; B23H1/02; B23H1/022; H02H; H02H7/00; H02H7/10; H02H7/12; H02H7/1216; H02M1/00; H02M1/08; H02M1/081; H02M5/00; H02M5/40; H02M5/42; H02M5/44; H02M5/443; H02M5/45; H02M5/4505; H02M7/162; H02M7/1623; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H02M7/525
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
A FREQUENCY TRANSFORMER COMPRISING A POWER RECTIFICATION STAGE AND A POWER OUTPUT STAGE FOR CONVERTING THE GENERATED DIRECT-CURRENT VOLTAGE OF THE POWER RECTIFICATION STAGE INTO AN ALTERNATING-CURRENT VOLTAGE OF PREDETERMINED FREQUENCY, A SOURCE OF POWER FOR SAID POWER RECTIFICATION STAGE, SAID POWER RECTIFICATION STAGE AND SAID POWER OUTPUT STAGE EACH BEING PROVIDED WITH CONTROLLED SEMI-CONDUCTOR RECTIFIERS, FIRST AND SECOND IGNITION CIRCUITS, SAID FIRST IGNITION CIRCUIT DELIVERING IGNITION IMPULSES FOR SAID CONTROLLED SEMI-CONDUCTION RECTIFIERS OF SAID POWER RECTIFICATION STAGE, SAID SECOND IGNITION CIRCUIT DELIVERING IGNITION IMPULSES FOR THE CONTROLLED SEMI-CONDUCTOR RECTIFIERS OF SAID POWER OUTPUT STAGE, SAFETY CIRCUIT MEANS CONSTRUCTED AS A LOGICAL CIRCUIT, SAID SAFETY CIRCUIT MEANS HAVING ITS INPUT COUPLED TO THE INPUT AND OUTPUT OF SAID POWER OUTPUT STAGE AND HAVING ITS OUTPUT COUPLED WITH SAID FIRST IGNITION CIRCUIT, SUCH THAT SAID LOGICAL CIRCUIT PREVENTS THE TRANSMISSION OF SAID IGNITION IMPULSES TO SAID CONTROLLED SEMI-CONDUCTOR RECTIFIERS OF SAID POWER RECTIFICATION STAGE WHEN THE VOLTAGE APPEARING AT THE POWER OUTPUT STAGE IS AT LEAST A SMALLER PREDETERMINED VALUE THAN THE VOLTAGE APPEARING AT THE INPUT THEREOF.
Claim 2
Dependent Claim
177 words
A FREQUENCY TRANSFORMER COMPRISING A POWER RECTIFICATION STAGE AND A POWER OUTPUT STAGE FOR CONVERTING THE GENERATED DIRECT-CURRENT VOLTAGE OF THE POWER RECTIFICATION STAGE INTO AN ALTERNATING-CURRENT VOLTAGE OF PREDETERMINED FREQUENCY, A SOURCE OF POWER FOR SAID POWER RECTIFICATION STAGE, SAID POWER RECTIFICATION STAGE AND SAID POWER OUTPUT STAGE EACH BEING PROVIDED WITH CONTROLLED SEMI-CONDUCTOR RECTIFIERS, FIRST AND SECOND IGNITION CIRCUITS, SAID FIRST IGNITION CIRCUIT DELIVERING IGNITION IMPULSES FOR SAID CONTROLLED SEMI-CONDUCTION RECTIFIERS OF SAID POWER RECTIFICATION STAGE, SAID SECOND IGNITION CIRCUIT DELIVERING IGNITION IMPULSES FOR THE CONTROLLED SEMI-CONDUCTOR RECTIFIERS OF SAID POWER OUTPUT STAGE, SAFETY CIRCUIT MEANS CONSTRUCTED AS A LOGICAL CIRCUIT, SAID SAFETY CIRCUIT MEANS HAVING ITS INPUT COUPLED TO THE INPUT AND OUTPUT OF SAID POWER OUTPUT STAGE AND HAVING ITS OUTPUT COUPLED WITH SAID FIRST IGNITION CIRCUIT, SUCH THAT SAID LOGICAL CIRCUIT PREVENTS THE TRANSMISSION OF SAID IGNITION IMPULSES TO SAID CONTROLLED SEMI-CONDUCTOR RECTIFIERS OF SAID POWER RECTIFICATION STAGE WHEN THE VOLTAGE APPEARING AT THE POWER OUTPUT STAGE IS AT LEAST A SMALLER PREDETERMINED VALUE THAN THE VOLTAGE APPEARING AT THE INPUT THEREOF.
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |