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US3559077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counting circuit
Assignee: Amtron Inc
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Filing: 1967-08-21
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Granted: 1971-01-26
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Expires: 1987-08-21
Abstract
Abstract AN ELECTRONIC CONTROL CIRCUIT HIGHLY INSENSITIVE TO NOISE INCLUDING CONTACT BOUNCE, HAVING AN INPUT CIRCUIT INCLUDING A SATURABLE MAGNETIC CORE REACTOR WITH A SINGLE COIL THROUGH WHICH THE INPUT SIGNAL IS APPLIED. THE INPUT CIRCUIT IS NONRESPONSIVE TO INPUT SIGNALS OF A TIME DURATION LESS THAN A TIME DURACTION-PRESELECTED BY THE PLURALITY OF TAPS ON THE COIL. CONNECTED TO THE INPUT CIRCUIT ARE BISTABLE MULTIVIBRATOR CIRCUITS WITH AN INTERNAL CAPACITIVE FEEDBACK COUPLING RENDERING EACH MULTIVIBRATOR CIRCUIT NONRESPONSIVE TO TRIGGERING BY ELECTRICAL SIGNALS OF A FREQUENCY SUBSTANTIALLY HIGHER THAN ITS OPERATING FREQUENCY.
Inventors
- 👤 Virgle E Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:41
CPC Classifications
H; H03; H03K; H03K21/00; H03K21/02; H03K3/00; H03K3/01; H03K3/013
Claims Analysis
Total Claims: 0
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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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |