US3587078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Limit sensor device
Assignee: Individual
•
Filing: 1968-04-29
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Granted: 1971-06-22
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Expires: 1988-04-29
Abstract
Abstract A device for response to two limit values of an electrical voltage or current indicative of a variable physical quantity comprises a flip-flop amplifier which receives as input quantities not only the sensed electrical quantity but also an additional periodic pulse. A coincidence gate network connected to the amplifier output and to the pulse source provides a gate output voltage dependent upon the operating state which the flipflop amplifier exhibits during the pulses and pauses of the periodic input pulse. The gate output voltage is indicative of whether or not the variable quantity being supervised has attained either of the two limit values.
Inventors
- 👤 Dieter Eichmann
- 👤 Georg Russ
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:27
CPC Classifications
G; G08; G08C; G08C19/00; G01; G01B; G01B3/00; G01B3/38; G01B3/42; G01B3/44; G01D; G01D1/00; G01D1/12; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01R; G01R19/00; G01R19/165; H; H02; H02H; H02H3/00; H02H3/24
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
161 words
Sensor device for response to two limit values of an electrical voltage or current indicative of a variable physical quantity, comprising a flip-flop amplifier having input means and output means, sensing means providing an electrical quantity to be responded to and being connected to said amplifier input, a source of an additional electrical input quantity connected to said amplifier input and having a periodic pulse characteristic with given respective durations of pulses and pauses, and a coincidence gate network having respective input means connected to said amplifier output and to said periodic pulse source, said gate network having an output voltage dependent upon the switching of said flip-flop amplifier to its operating state during the pulses and pauses of said periodic additional input quantity, whereby said gate output voltage is indicative of whether said variable quantity has attained either of said limit values, said amplifier measures both limit values and the amplifier output is differentially scanned during the pulses and pauses.
Claim 2
Dependent Claim
161 words
Sensor device for response to two limit values of an electrical voltage or current indicative of a variable physical quantity, comprising a flip-flop amplifier having input means and output means, sensing means providing an electrical quantity to be responded to and being connected to said amplifier input, a source of an additional electrical input quantity connected to said amplifier input and having a periodic pulse characteristic with given respective durations of pulses and pauses, and a coincidence gate network having respective input means connected to said amplifier output and to said periodic pulse source, said gate network having an output voltage dependent upon the switching of said flip-flop amplifier to its operating state during the pulses and pauses of said periodic additional input quantity, whereby said gate output voltage is indicative of whether said variable quantity has attained either of said limit values, said amplifier measures both limit values and the amplifier output is differentially scanned during the pulses and pauses.
Claim 3
Dependent Claim
45 words
In a device according to claim 1, said source being a pulse generator having an output pulse voltage connected to said input means of said gate network and to said amplifier input, and adjustable resistance means connected between said pulse generator and said amplifier input.
Claim 4
Dependent Claim
52 words
In a device according to claim 2, said gate network comprising an inverter and an AND gate, said AND gate having two inputs of which one is connected through said inverter to said pulse generator output, said other input of said AND gate being connected to the output of said flip-flop amplifier.
Claim 5
Dependent Claim
49 words
In a device according to claim 2, said gate network comprising a dynamic AND gate having a preparatory input and a trigger input of which the former is connected to the output of said flip-flop amplifier, the trigger input input being connected to the output of said pulse generator.
Claim 6
Dependent Claim
67 words
In a device according to claim 1, said sensing means comprising a bridge network having a branch provided with a temperature-responsive resistor and having a bridge output voltage varying in dependence upon the temperature of said resistor, said bridge output voltage being connected to said amplifier input to serve as said electrical quantity, and a decoupling diode interposed between said amplifier input and said periodic pulse source.
Claim 7
Dependent Claim
103 words
Device according to claim 1, for tolerance gauging, comprising three indicator lamps of which one is directly connected to the output of said flip-flop amplifier, an inverter stage through which a second one of said lamps is connected to said amplifier output, an OR gate having two inputs and Having an output to which said third lamp is connected, an AND gate and a NOR gate having respective outputs connected to said two inputs of said OR gate, each of said AND gate and said NOR gate having an input connected to said amplifier output and an input connected to said pulse source.
Claim 8
Dependent Claim
55 words
System for supervising several variable physical quantities, comprising a number of sensor devices according to claim 1 for said physical quantities respectively, said source of periodic pulses of all of said devices being constituted by a single pulse generator which is connected to said amplifier and said gate network of each of said individual devices.
Claim 9
Dependent Claim
29 words
In a system according to claim 7, said pulse generator having a flicker-light frequency, and flicker lamps being connected to the outputs of said amplifiers in said respective devices.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |