US3670833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for measuring a weighing load rapidly
Assignee: Mitsubishi Steel Mfg Co Ltd
•
Filing: 1970-08-25
•
Granted: 1972-06-20
•
Expires: 1990-08-25
Abstract
Abstract Where a weighing load is detected as an electrical weighing signal with an oscillatory component due to various oscillations of the weighing elements, the oscillatory component is separated from the original weighing signal and after it is positively inverted in phase, the inverted separated signal is superposed on the original signal so that the weighing signal is obtained, with the oscillatory signal eliminated.
Inventors
- 👤 Akuta Tomohiko
- 👤 Atsumi Seya
- 👤 Shinya Hashirizaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:32
CPC Classifications
G; G01; G01G; G01G3/00; G01G3/12; G01G3/14; G01G3/142; Y; Y10; Y10S; Y10S177/00; Y10S177/08
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
98 words
A method for rapidly measuring a weighing load with superimposed vibrations, wherein said load is detected as an electrical weighing signal with an oscillatory component due to said vibrations comprising separating said oscillatory component signal from said original weighing signal, positively reversing the phase of said separated oscillatory signal with its period and amplitude made the same as those of the original oscillatory component and then superimposing said separated and phasereversed oscillatory signal on said original weighing signal to cancel out the oscillatory component of said original weighing signal, thereby obtaining the weighing signal with no oscillatory component.
Claim 2
Independent Claim
98 words
A method for rapidly measuring a weighing load with superimposed vibrations, wherein said load is detected as an electrical weighing signal with an oscillatory component due to said vibrations comprising separating said oscillatory component signal from said original weighing signal, positively reversing the phase of said separated oscillatory signal with its period and amplitude made the same as those of the original oscillatory component and then superimposing said separated and phasereversed oscillatory signal on said original weighing signal to cancel out the oscillatory component of said original weighing signal, thereby obtaining the weighing signal with no oscillatory component.
Claim 3
Dependent Claim
100 words
Apparatus for rapidly measuring a weighing load with superimposed vibrations, comprising means for detecting said load as an electrical weighing signal with an oscillatory component due to said vibrations, means for separating said oscillatory component signal from the original weighing signal, means for reversing the phase of said separated signal and for making its amplitude the same as that of the original oscillatory component signal and means for then superimposing said separated and phase-reversed oscillatory signal on said original weighing signal to eliminate the oscillatory component of said original weighing signal to obtain the weighing sIgnal with no oscillatory component.
Claim 4
Dependent Claim
100 words
Apparatus for rapidly measuring a weighing load with superimposed vibrations, comprising means for detecting said load as an electrical weighing signal with an oscillatory component due to said vibrations, means for separating said oscillatory component signal from the original weighing signal, means for reversing the phase of said separated signal and for making its amplitude the same as that of the original oscillatory component signal and means for then superimposing said separated and phase-reversed oscillatory signal on said original weighing signal to eliminate the oscillatory component of said original weighing signal to obtain the weighing sIgnal with no oscillatory component.
Claim 5
Dependent Claim
24 words
Apparatus according to claim 2, further comprising signal amplifying means connected between said detecting means and said means for separating said oscillatory component signal.
Claim 6
Dependent Claim
42 words
Apparatus according to claim 3, in which said means for separating said oscillatory component signal comprises a differential circuit which passes alternating current representing said oscillatory component signal but does not pass direct current representing the weight of the load being weighed.
Claim 7
Dependent Claim
38 words
Apparatus according to claim 4, in which said differential circuit comprises two lines connected to the output of said amplifier, at least one capacitor in one said line and at least one resistor connected across between said lines.
Claim 8
Dependent Claim
40 words
Apparatus according to claim 4, in which said means for reversing the phase of said separated signal and for making its amplitude the same as the original signal comprises a gain control circuit and a phase inverter connected in sequence.
Claim 9
Dependent Claim
57 words
Apparatus according to claim 6, in which said means for superimposing said separated oscillatory signal on the original weighing signal comprises a summing circuit having two inputs, one of which is connected directly to said amplifier and the other of which is connected to said amplifier through said differential circuit, gain control circuit and said phase inverter.
Claim 10
Dependent Claim
36 words
Apparatus according to claim 3, in which said means for separating said oscillatory signal and reversing the phase of said separated signal comprises a differentiator and phase inverter circuit connected to the output of said amplifier.
Claim 11
Dependent Claim
54 words
Apparatus according to claim 8, in which said differentiator and phase inverter circuit comprises two lines connected to the output of said amplifier, a plurality of capacitors connected in series in one of said lines and a plurality of resistors connected between said lines including resistors connected to said one line between said capacitors.
Claim 12
Dependent Claim
88 words
Apparatus according to claim 8, in which said means for making the amplitude of said separated signal the same as that of the original signal and for superimposing said separated signal on the original weighing signal comprises a summing circuit having two inputs of which one is directly connected to said amplifier and the other is connected to said amplifier through said differentiator and phase inverter circuit, said summing circuit including means for making the amplitude of said separated signal the same as that of the original signal.
Claim 13
Dependent Claim
39 words
Apparatus according to claim 10, comprising a plurality of units connected in sequence, each of said units comprising a said differentiator and phase inverter circuit and a said summing circuit, said units successively eliminating oscillatory components of different frequency.
Claim 14
Dependent Claim
22 words
Apparatus according to claim 10, comprising a buffer amplifier connected between said first mentioned amplifier and said differentiator and phase inverter circuit.
References Cited (Backward Citations)
US2914310A
Cited
US3063635A
Cited
US3276525A
Cited
US3446298A
Cited
US3478830A
Cited
US3545555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |