Patent US3360715A successfully refreshed from Google Patents.
US3360715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condition responsive solid state transducing and indicating controller means
Assignee: Robertshaw Controls Co
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Filing: 1965-07-19
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Granted: 1967-12-26
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Expires: 1985-07-19
Abstract
No abstract record available.
Inventors
- 👤 Klaus P Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:40
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/16; G01K7/18; G01K7/20; G01R; G01R17/00; G05; G05B; G05B1/00; G05B1/01; G05B1/02; G05B1/027; G05D; G05D23/00; G05D23/19; G05D23/1906; G05D23/20; G05D23/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
CIRCUIT MEANS PROVIDING AN OUTPUT VOLTAGE SIGNAL AS A FUNCTION OF THE VARIATION OF A MONITORED PARAMETER FROM A PREDETERMINED CONTROL POINT COMPRISING A SOURCE OF ALTERNATING CURRENT POWER; A RESISTANCE BRIDGE HAVING INPUT TERMINALS CONNECTED ACROSS SAID SOURCE, A FIRST PAIR OF SERIES CONNECTED CONSTANT RESISTANCE BRIDGE ARMS, HAVING A FIRST OUTPUT TERMINAL THEREBETWEEN MAINTAINED AT A PREDETERMINED POTENTIAL, CONNECTED ACROSS SAID INPUT TERMINALS THROUGH HALF-WAVE RECTIFIER MEANS, A SECOND PAIR OF SERIES CONNECTED VARIABLE RESISTANCE BRIDGE ARMS INCLUDING A VARIABLE RESISTANCE SENSOR MEANS HAVING THE RESISTANCE THEREOF VARIABLE AS A FUNCTION OF A MONITORED PARAMETER AND HAVING A SECOND OUTPUT TERMINAL THEREBETWEEN HAVING A VARIABLE POTENTIAL THEREON AS A FUNCTION OF CHANGES IN SAID PARAMETER, CONNECTED ACROSS SAID INPUT TERMINALS; AND DIFFERNTIAL AMPLIFIER MEANS HAVING INPUTS CONNECTED RESPECTIVELY, AT SAID OUTPUT TERMINALS OF SAID RESISTANCE BRIDGE, SAID DIFFERENTIAL AMPLIFIER MEANS INCLUDING MEANS PROVIDING AN OUTPUT VOLTAGE SIGNAL PROPORTIONAL TO THE UNBALANCE IN SAID BRIDGE CIRCUIT AS A FUNCTION OF THE SAID VARIATIONS IN SAID PARAMETER DURING EACH ALTERNATE HALF CYCLE OF POWER SUPPLIED TO SAID BRIDGE.
Claim 2
Dependent Claim
178 words
CIRCUIT MEANS PROVIDING AN OUTPUT VOLTAGE SIGNAL AS A FUNCTION OF THE VARIATION OF A MONITORED PARAMETER FROM A PREDETERMINED CONTROL POINT COMPRISING A SOURCE OF ALTERNATING CURRENT POWER; A RESISTANCE BRIDGE HAVING INPUT TERMINALS CONNECTED ACROSS SAID SOURCE, A FIRST PAIR OF SERIES CONNECTED CONSTANT RESISTANCE BRIDGE ARMS, HAVING A FIRST OUTPUT TERMINAL THEREBETWEEN MAINTAINED AT A PREDETERMINED POTENTIAL, CONNECTED ACROSS SAID INPUT TERMINALS THROUGH HALF-WAVE RECTIFIER MEANS, A SECOND PAIR OF SERIES CONNECTED VARIABLE RESISTANCE BRIDGE ARMS INCLUDING A VARIABLE RESISTANCE SENSOR MEANS HAVING THE RESISTANCE THEREOF VARIABLE AS A FUNCTION OF A MONITORED PARAMETER AND HAVING A SECOND OUTPUT TERMINAL THEREBETWEEN HAVING A VARIABLE POTENTIAL THEREON AS A FUNCTION OF CHANGES IN SAID PARAMETER, CONNECTED ACROSS SAID INPUT TERMINALS; AND DIFFERNTIAL AMPLIFIER MEANS HAVING INPUTS CONNECTED RESPECTIVELY, AT SAID OUTPUT TERMINALS OF SAID RESISTANCE BRIDGE, SAID DIFFERENTIAL AMPLIFIER MEANS INCLUDING MEANS PROVIDING AN OUTPUT VOLTAGE SIGNAL PROPORTIONAL TO THE UNBALANCE IN SAID BRIDGE CIRCUIT AS A FUNCTION OF THE SAID VARIATIONS IN SAID PARAMETER DURING EACH ALTERNATE HALF CYCLE OF POWER SUPPLIED TO SAID BRIDGE.
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) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |