Patent US3112430A successfully refreshed from Google Patents.
US3112430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signalling receiver
Assignee: US Philips Corp
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Filing: 1960-06-17
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Granted: 1963-11-26
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Expires: 1980-06-17
Abstract
No abstract record available.
Inventors
- 👤 Hendrikus Cornelis Van Rossum
- 👤 Poppe Jan Karel August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:11
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A SIGNAL RECEIVER COMPRISING AN INDUCTIVE SIGNAL RELAY, A CONTROL STAGE FOR ENERGIZING SAID RELAY, AND A SOURCE OF SIGNALS, SAID CONTROL STAGE COMPRISING FIRST AND SECOND TRANSISTORS, A SOURCE OF OPERATING VOLTAGE HAVING FIRST AND SECOND TERMINALS, MEANS SERIALLY CONNECTING THE EMITTERCOLLECTOR PATHS OF SAID FIRST AND SECOND TRANSISTOR AND SAID RELAY, IN THAT ORDER, BETWEEN SAID FIRST AND SECOND TERMINALS, MEANS APPLYING SAID SIGNALS TO THE BASE ELECTRODE OF SAID FIRST TRANSISTOR, MEANS APPLYING A BIAS TO SAID FIRST TRANSISTOR FOR KEEPING SAID FIRST TRANSISTOR CUT OFF IN THE ABSENCE OF SIGNALS FROM SAID SOURCE, AND RESISTANCE MEANS CONNECTED BETWEEN THE BASE OF SAID SECOND TRANSISTOR AND SAID SECOND TERMINAL, WHEREBY THE MAXIMUM COLLECTOR-EMITTER VOLTAGE OF SAID FIRST TRANSISTOR IS SUBSTANTIALLY EQUAL TO SAID OPERATING VOLTAGE.
Claim 2
Dependent Claim
128 words
A SIGNAL RECEIVER COMPRISING AN INDUCTIVE SIGNAL RELAY, A CONTROL STAGE FOR ENERGIZING SAID RELAY, AND A SOURCE OF SIGNALS, SAID CONTROL STAGE COMPRISING FIRST AND SECOND TRANSISTORS, A SOURCE OF OPERATING VOLTAGE HAVING FIRST AND SECOND TERMINALS, MEANS SERIALLY CONNECTING THE EMITTERCOLLECTOR PATHS OF SAID FIRST AND SECOND TRANSISTOR AND SAID RELAY, IN THAT ORDER, BETWEEN SAID FIRST AND SECOND TERMINALS, MEANS APPLYING SAID SIGNALS TO THE BASE ELECTRODE OF SAID FIRST TRANSISTOR, MEANS APPLYING A BIAS TO SAID FIRST TRANSISTOR FOR KEEPING SAID FIRST TRANSISTOR CUT OFF IN THE ABSENCE OF SIGNALS FROM SAID SOURCE, AND RESISTANCE MEANS CONNECTED BETWEEN THE BASE OF SAID SECOND TRANSISTOR AND SAID SECOND TERMINAL, WHEREBY THE MAXIMUM COLLECTOR-EMITTER VOLTAGE OF SAID FIRST TRANSISTOR IS SUBSTANTIALLY EQUAL TO SAID OPERATING VOLTAGE.
References Cited (Backward Citations)
US2835829A
Cited
US2994784A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-25 | 1967-05-27 | 1967-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-25 | 1971-05-27 | 1971-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-25 | 1975-05-27 | 1975-11-26 | $7700.00 | Window Closed / Lapsed |