US3714401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor type continuous weighing system
Assignee: Imamura Seisakusho KK
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Filing: 1971-09-27
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Granted: 1973-01-30
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Expires: 1991-09-27
Abstract
Abstract A conveyor type continuous weighing system having a weighing conveyor, a pulse generator, a high-frequency oscillator, a plurality of counters, a shift register, an integrated weight indicator and a comparator. In the system, the counters count the number of high-frequency pulses representing the weight of a material being conveyed in response to the application of pulses from the pulse generator to the shift register, and the new count is added to the previous count. The sum of the weight of the material having been discharged from the weighing conveyor and the weight of the material existing on the weighing conveyor is compared with a predetermined setting, and the supply of the material is stopped when the sum attains the predetermined setting.
Inventors
- 👤 Y Yano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:53
CPC Classifications
G; G01; G01G; G01G23/00; G01G23/02; G01G23/04; G01G11/00; G01G11/14; G01G11/16; G01G11/18; G01G23/18; G01G23/36; G01G23/37
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
333 words
A conveyor type continuous weighing system comprising a weighing conveyor supported bodily on a weight detecting means, means for continuously delivering an analog signal representative solely of the weight of a material being conveyed by said weighing conveyor, means for converting the analog signal into a digital signal, a pulse generator for generating a train of pulses at equal intervals as said weighing conveyor is advanced, n counters each having input and output gates where n is the number of pulses generated by said pulse generator during the travel of the upper run of said weighing conveyor from one end to the other, a shift register having an operating point which can be shifted successively from one position to the next to enable said gates sequentially, a high-frequency oscillator generating high-frequency pulses in response to the application of the pulse from said pulse generator as said weighing conveyor is advanced and ceasing to generate the pulses when the pulse applied from said pulse generator disappears, means for supplying the high-frequency pulses generated by said high-frequency oscillator to the counter whose input gate is opened due to the coincidence with the operating point in said shift register until the number of the high-frequency pulses agrees with the digital signal representative of the weight of the material on said weighing conveyor whereby each of said n counters can successively count and store the weight of the material on said weighing conveyor in response to the application of the successive pulses from said pulse generator while adding the new count to the previous count so as to deliver an output representative of the sum of the weight of the material having been discharged from said weighing conveyor and the weight of the material existing on said weighing conveyor, and means for comparing the output representative of the sum with a predetermined setting and delivering a signal for stopping the supply of the material onto said weighing conveyor when the weighed value agrees with the predetermined setting.
Claim 2
Dependent Claim
333 words
A conveyor type continuous weighing system comprising a weighing conveyor supported bodily on a weight detecting means, means for continuously delivering an analog signal representative solely of the weight of a material being conveyed by said weighing conveyor, means for converting the analog signal into a digital signal, a pulse generator for generating a train of pulses at equal intervals as said weighing conveyor is advanced, n counters each having input and output gates where n is the number of pulses generated by said pulse generator during the travel of the upper run of said weighing conveyor from one end to the other, a shift register having an operating point which can be shifted successively from one position to the next to enable said gates sequentially, a high-frequency oscillator generating high-frequency pulses in response to the application of the pulse from said pulse generator as said weighing conveyor is advanced and ceasing to generate the pulses when the pulse applied from said pulse generator disappears, means for supplying the high-frequency pulses generated by said high-frequency oscillator to the counter whose input gate is opened due to the coincidence with the operating point in said shift register until the number of the high-frequency pulses agrees with the digital signal representative of the weight of the material on said weighing conveyor whereby each of said n counters can successively count and store the weight of the material on said weighing conveyor in response to the application of the successive pulses from said pulse generator while adding the new count to the previous count so as to deliver an output representative of the sum of the weight of the material having been discharged from said weighing conveyor and the weight of the material existing on said weighing conveyor, and means for comparing the output representative of the sum with a predetermined setting and delivering a signal for stopping the supply of the material onto said weighing conveyor when the weighed value agrees with the predetermined setting.
Claim 3
Dependent Claim
333 words
A conveyor type continuous weighing system comprising a weighing conveyor supported bodily on a weight detecting means, means for continuously delivering an analog signal representative solely of the weight of a material being conveyed by said weighing conveyor, means for converting the analog signal into a digital signal, a pulse generator for generating a train of pulses at equal intervals as said weighing conveyor is advanced, n counters each having input and output gates where n is the number of pulses generated by said pulse generator during the travel of the upper run of said weighing conveyor from one end to the other, a shift register having an operating point which can be shifted successively from one position to the next to enable said gates sequentially, a high-frequency oscillator generating high-frequency pulses in response to the application of the pulse from said pulse generator as said weighing conveyor is advanced and ceasing to generate the pulses when the pulse applied from said pulse generator disappears, means for supplying the highfrequency pulses generated by said high-frequency oscillator to the counter whose input gate is opened due to the coincidence with the operating point in said shift register until the number of the high-frequency pulses agrees with the digital signal representative of the weight of the material on said weighing conveyor whereby each of said n counters can successively count and store the weight of the material on said weighing conveyor in response to the application of the successive pulses from said pulse generator while adding the new count to the previous count so as to deliver an output representative of the sum of the weight of the material having been discharged from said weighing conveyor and the weight of the material existing on said weighing conveyor, and means for comparing the output representative of the sum with a predetermined setting and delivering a signal for stopping the supply of the material onto said weighing conveyor when the weighed value agrees with the predetermined setting.
Claim 4
Dependent Claim
333 words
A conveyor type continuous weighing system comprising a weighing conveyor supported bodily on a weight detecting means, means for continuously delivering an analog signal representative solely of the weight of a material being conveyed by said weighing conveyor, means for converting the analog signal into a digital signal, a pulse generator for generating a train of pulses at equal intervals as said weighing conveyor is advanced, n counters each having input and output gates where n is the number of pulses generated by said pulse generator during the travel of the upper run of said weighing conveyor from one end to the other, a shift register having an operating point which can be shifted successively from one position to the next to enable said gates sequentially, a high-frequency oscillator generating high-frequency pulses in response to the application of the pulse from said pulse generator as said weighing conveyor is advanced and ceasing to generate the pulses when the pulse applied from said pulse generator disappears, means for supplying the highfrequency pulses generated by said high-frequency oscillator to the counter whose input gate is opened due to the coincidence with the operating point in said shift register until the number of the high-frequency pulses agrees with the digital signal representative of the weight of the material on said weighing conveyor whereby each of said n counters can successively count and store the weight of the material on said weighing conveyor in response to the application of the successive pulses from said pulse generator while adding the new count to the previous count so as to deliver an output representative of the sum of the weight of the material having been discharged from said weighing conveyor and the weight of the material existing on said weighing conveyor, and means for comparing the output representative of the sum with a predetermined setting and delivering a signal for stopping the supply of the material onto said weighing conveyor when the weighed value agrees with the predetermined setting.
Claim 5
Dependent Claim
16 words
A system as claimed in claim 1, in which said weighing conveyor is a belt conveyor.
Claim 6
Dependent Claim
16 words
A system as claimed in claim 1, in which said weighing conveyor is a pan conveyor.
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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |