US3287622A
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Static frequency converter for producing a constant output frequency from a variablefrequency input
Assignee: Bendix Corp
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Filing: 1963-06-14
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Granted: 1966-11-22
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Expires: 1983-06-14
Abstract
No abstract record available.
Inventors
- 👤 Robert C Eckenfelder
- 👤 Leo B Bourgeault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:17
CPC Classifications
H; H02; H02M; H02M5/00; H02M5/02; H02M5/04; H02M5/22; H02M5/25; H02M5/27; H02M5/271; H02M5/272
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
A STATIC FREQUENCY CONVERTER FOR CONVERTING A HIGH FREQUENCY INPUT TO A LOW FREQUENCY OUTPUT, COMPRISING A SOURCE OF HIGH FREQUENCY, A LOW FREQUENCY OUTPUT, A PAIR OF SUBSTANTIALLY SIMILAR PARALLEL CIRCUITS, EACH OF SAID PARALLEL CIRCUITS INCLUDING A BRIDGE CIRCUIT HAVING A SAW-TOOTHED OUTPUT, MEANS FOR CONNECTING SAID PARALLEL CIRCUITS TO SAID SOURCE OF HIGH FREQUENCY IN OPPOSITE POLARITY, SCR''S CONNECTING SAID PARALLEL CIRCUIT TO SAID LOW FREQUENCY OUTPUT, AND MEANS FOR CONNECTING A LOW FREQUENCY MODULATING SIGNAL TO SAID CIRCUIT IN OPPOSITE POLARITY TO MODULATE SAID SAW-TOOTHED OUTPUT TO TURN ON SAID SCR''S ALTERNATELY IN ACCORDANCE WITH SAID LOW FREQUENCY MODULATING SIGNAL.
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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |