US3558867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrating computer
Assignee: Individual
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Filing: 1968-10-16
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Granted: 1971-01-26
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Expires: 1988-10-16
Abstract
Abstract An integrating computer is disclosed which continuously computes time of deviation from that elapsed time which would be required to maintain a preselected average speed over the distance actually traveled. A preselected current which is an inverse function of the preselected average speed is applied to an integrator for a preselected interval each time a unit of distance is traversed. A current in the opposite direction is applied to the integrator continuously to represent the passage of time. The integrator accordingly provides an output signal which varies substantially in proportion to the time of deviation from that elapsed time which would be required to maintain the preselected average speed.
Inventors
- 👤 Henry D Pahl Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:26
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/18; G06G7/184; G06G7/186; G06G7/1865
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
226 words
In apparatus for continuously computing time of deviation from that elapsed time which would be required to maintain a preselected average speed over a distance actually traveled: a current integrator circuit having an input terminal and an output terminal and being operative to provide at said output terminal an output voltage which varies as a function of the time integral of current signals applied to said input terminal; a first means for applying a current signal to said integrator circuit input terminal continuously during operation of said apparatus, said current signal being applied in a first direction and being of predetermined amplitude for causing, in the absence of other current signals, said integrator output voltage to change value at a predetermined rate indicating the passage of time; and a second means for applying current to said integrator circuit input terminal, said second means being operative to apply a preselected current for a preselected time interval each time a predetermined increment of distance is traveled, said preselected current being applied in a direction opposite said first direction, said second current applying means including means for selectively varying the amplitude of said preselected current thereby to select an average speed whereby said output signal voltage varies substantially in proportion to the time of deviation from that elapsed time which would be required to maintain said preselected average speed.
Claim 2
Dependent Claim
226 words
In apparatus for continuously computing time of deviation from that elapsed time which would be required to maintain a preselected average speed over a distance actually traveled: a current integrator circuit having an input terminal and an output terminal and being operative to provide at said output terminal an output voltage which varies as a function of the time integral of current signals applied to said input terminal; a first means for applying a current signal to said integrator circuit input terminal continuously during operation of said apparatus, said current signal being applied in a first direction and being of predetermined amplitude for causing, in the absence of other current signals, said integrator output voltage to change value at a predetermined rate indicating the passage of time; and a second means for applying current to said integrator circuit input terminal, said second means being operative to apply a preselected current for a preselected time interval each time a predetermined increment of distance is traveled, said preselected current being applied in a direction opposite said first direction, said second current applying means including means for selectively varying the amplitude of said preselected current thereby to select an average speed whereby said output signal voltage varies substantially in proportion to the time of deviation from that elapsed time which would be required to maintain said preselected average speed.
Claim 3
Dependent Claim
36 words
Apparatus as set forth in claim 1 wherein said second means for applying current includes a one-shot multivibrator, the current from said second source being applied to said integrator during the operating period of said multivibrator.
Claim 4
Dependent Claim
24 words
Apparatus as set forth in claim 2 wherein said one-shot multivibrator includes a variable resistance for adjusting the period of operation of said multivibrator.
Claim 5
Dependent Claim
41 words
Apparatus as set forth in claim 2 wherein said second means for applying current includes a gate which is controlled by said multivibrator for passing current from said source to said integrator circuit during the period of operation of said multivibrator.
Claim 6
Dependent Claim
19 words
Apparatus as set forth in claim 4 wherein said source comprises a variable resistance for adjusting said preselected current.
Claim 7
Dependent Claim
15 words
Apparatus as set forth in claim 4 wherein said gate comprises a pair of diodes.
Claim 8
Dependent Claim
16 words
Apparatus as set forth in claim 1 including a zero-center meter for indicating said output voltage.
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |