US3346797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Static relay control circuit
Assignee: Allis Chalmers Corp
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Filing: 1963-01-21
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Granted: 1967-10-10
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Expires: 1983-01-21
Abstract
No abstract record available.
Inventors
- 👤 Baude John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:03
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/08; H02H3/093
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
128 words
A CONTROL SYSTEM RESPONSIVE TO CURRENT IN AN ELECTRICAL CIRCUIT TO PRODUCE A SIGNAL, SAID CONTROL SYSTEM CONPRISING: MEANS RESPONSIVE TO THE CURRENT IN THE ELECTRICAL CIRCUIT FOR PRODUCING AN OUTPUT VARYING AS A FUNCTION OF THE CURRENT IN THE ELECTRICAL CIRCUIT; A CAPACITOR CONNECTED TO RECEIVE THE OUTPUT; MEANS CONNECTED TO THE CAPACITOR FOR CONTROLLING THE PORTION OF THE OUTPUT RECEIVED BY THE CAPACITOR; A SENSING DEVICE CONNECTED TO THE CAPACITIOR FOR PRODUCING A SIGNAL WHEN THE VOLTAGE ACROSS THE CAPACIATOR REACHES A PRESELECTED; A ZENER DIODE CONNECTED ACROSS THE CAPACITOR FOR PASSING TO THE CAPACITOR ONLY THAT PORTION OF THE OUTPUT BELOW A PRESELECTED MAXIMUM LEVEL; AND MEANS CONNECTED TO THE CAPACITOR FOR SHORT CIRCUITING THE CAPACITOR WHEN THE OUTPUT IS BELOW A PRESELECTED MINIMUM LEVEL.
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) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |