Patent US3121827A successfully refreshed from Google Patents.
US3121827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reed relay trigger circuit
Assignee: International Business Machines Corp
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Filing: 1961-10-26
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Granted: 1964-02-18
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Expires: 1981-10-26
Abstract
No abstract record available.
Inventors
- 👤 Bruce H Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:01
CPC Classifications
H; H01; H01H; H01H47/00; H03; H03K; H03K3/00; H03K3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A TRIGGER CIRCUIT COMPRISING FIRST AND SECOND RELAYS, MEANS INCLUDING A VOLTAGE SOURCE FOR SUPPLYING ACROSS THE COIL OF SAID FIRST RELAY A BIAS VOLTAGE INSUFFICIENT TO PICK BUT SUFFICIENT TO HOLD SUCH RELAY, INPUT MEANS PROVIDING TRIGGER PULSES OF A VOLTAGE HIGHER THAN SAID BIAS VOLTAGE, FIRST AND SECOND MEANS FOR COUPLING THE INPUT MEANS TO OPPOSITE SIDES OF SAID COIL AND INCLUDING IMPEDANCE MEANS FOR DELAYING DECAY OF THE TRIGGER PULSE IN SAID FIRST MEANS AT LEAST A PREDETERMINED TIME AFTER DECAY OF THE PULSE IN SAID SECOND MEANS TO CREATE ACROSS SAID COIL A VOLTAGE DIF-
Claim 2
Dependent Claim
99 words
A TRIGGER CIRCUIT COMPRISING FIRST AND SECOND RELAYS, MEANS INCLUDING A VOLTAGE SOURCE FOR SUPPLYING ACROSS THE COIL OF SAID FIRST RELAY A BIAS VOLTAGE INSUFFICIENT TO PICK BUT SUFFICIENT TO HOLD SUCH RELAY, INPUT MEANS PROVIDING TRIGGER PULSES OF A VOLTAGE HIGHER THAN SAID BIAS VOLTAGE, FIRST AND SECOND MEANS FOR COUPLING THE INPUT MEANS TO OPPOSITE SIDES OF SAID COIL AND INCLUDING IMPEDANCE MEANS FOR DELAYING DECAY OF THE TRIGGER PULSE IN SAID FIRST MEANS AT LEAST A PREDETERMINED TIME AFTER DECAY OF THE PULSE IN SAID SECOND MEANS TO CREATE ACROSS SAID COIL A VOLTAGE DIF-
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) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |