Patent US3105175A successfully refreshed from Google Patents.
US3105175A
Expired / Lapsed
US
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Self-adjusting condition responsive relay circuit
Assignee: Individual
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Filing: 1960-05-17
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Granted: 1963-09-24
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Expires: 1980-05-17
Abstract
No abstract record available.
Inventors
- 👤 Siliani Pier Luigi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:15
CPC Classifications
H; H01; H01H; H01H47/00; H01H47/02; H01H47/04; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1906; G05D23/1909; G05D23/20; G05D23/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A CONDITION RESPONSIVE ELECTRIC CIRCUIT, COMPRISING A RELAY HAVING A PAIR OF CONTACTS AND A SWITCH ARM MOVABLE FROM ONE OF THE CONTACTS TO THE OTHER, FOUR RESISTORS INTERCONNECTED TO FORM A RECTANGULAR BRIDGE, THREE OF SAID RESISTORS HAVING CONSTANT RESISTANCE VALUES, THE FOURTH ONE OF SAID RESISTORS BEING VARIABLE IN RESPONSE TO AMBIENT TEMPERATURE, A TRANSISTOR AMPLIFIER HAVING A BIAS ELEMENT CONNECTED BETWEEN OPPOSITE DIAGONAL POINTS OF SAID BRIDGE, ONE OF SAID POINTS BEING A POINT OF CONNECTION OF THE FIRST AND SECOND OF SAID RESISTORS, THE OTHER OF SAID POINTS BEING A POINT OF CONNECTION OF THE THIRD AND FOURTH ONE OF SAID RESISTORS, A POWER SUPPLY HAVING TWO TERMINALS OF OPPOSITE POLARITY, SAID RELAY HAVING A WINDING CONNECTED BETWEEN ONE OF SAID TERMINALS AND A CURRENT EMITTING POINT OF SAID AMPLIFIER, A FIFTH RESISTOR, AND A SIXTH RESISTOR, THE
Claim 2
Dependent Claim
142 words
A CONDITION RESPONSIVE ELECTRIC CIRCUIT, COMPRISING A RELAY HAVING A PAIR OF CONTACTS AND A SWITCH ARM MOVABLE FROM ONE OF THE CONTACTS TO THE OTHER, FOUR RESISTORS INTERCONNECTED TO FORM A RECTANGULAR BRIDGE, THREE OF SAID RESISTORS HAVING CONSTANT RESISTANCE VALUES, THE FOURTH ONE OF SAID RESISTORS BEING VARIABLE IN RESPONSE TO AMBIENT TEMPERATURE, A TRANSISTOR AMPLIFIER HAVING A BIAS ELEMENT CONNECTED BETWEEN OPPOSITE DIAGONAL POINTS OF SAID BRIDGE, ONE OF SAID POINTS BEING A POINT OF CONNECTION OF THE FIRST AND SECOND OF SAID RESISTORS, THE OTHER OF SAID POINTS BEING A POINT OF CONNECTION OF THE THIRD AND FOURTH ONE OF SAID RESISTORS, A POWER SUPPLY HAVING TWO TERMINALS OF OPPOSITE POLARITY, SAID RELAY HAVING A WINDING CONNECTED BETWEEN ONE OF SAID TERMINALS AND A CURRENT EMITTING POINT OF SAID AMPLIFIER, A FIFTH RESISTOR, AND A SIXTH RESISTOR, THE
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) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |