US3556237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical weighing device for weighing loads subject to movement
Assignee: NAT RES DEV
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Filing: 1968-04-22
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Granted: 1971-01-19
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Expires: 1988-04-22
Abstract
Abstract The invention concerns apparatus for providing an electrical signal significant of the true weight of a load experiencing vertical accelerations or tilting while being weighed comprising a carrier on which the load is placed during weighing wherein the improvement comprises a load cell through which the apparent weight of the load is transmitted to a support, an accelerometer mounted to be subject to the same vertical accelerations or tilting as the load, and electrical circuitry in which the accelerometer and the load cell are connected and from which said signal is obtained, the accelerometer being connected to suppress the occurrence in the electrical signal of a component produced by vertical acceleration or tilting of the load being weighed.
Inventors
- 👤 Eric Allison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:43
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; G; G01; G01G; G01G19/00; G01G19/14; G01G19/18; G01G23/00; G01G23/06; G01G23/12; G01G3/00; G01G3/12; G01G3/14; G01G3/142; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
169 words
Apparatus for providing an electrical signal significant of the true weight of a load experiencing vertical accelerations while being weighed, comprising a carrier on which the load is placed during weighing, wherein the improvement comprises a load cell through which the apparent weight of the load is transmitted to a support, an accelerometer mounted to be subject to the same vertical accelerations as the load, and electrical circuitry in which the accelerometer and the load cell are connected and from which said signal is obtained, the accelerometer varying the voltage applied to the load cell and being connected to suppress the occurrence in the electrical signal of an inertial component produced by vertical acceleration of the load being weighed, said electrical circuitry including a linear amplifier having input terminals connected to receive the electrical output of the accelerometer and output terminals connected to apply the amplified electrical output of the accelerometer to input terminals of the load cell whereby the electrical output of the load cell constitutes said signal.
Claim 2
Dependent Claim
169 words
Apparatus for providing an electrical signal significant of the true weight of a load experiencing vertical accelerations while being weighed, comprising a carrier on which the load is placed during weighing, wherein the improvement comprises a load cell through which the apparent weight of the load is transmitted to a support, an accelerometer mounted to be subject to the same vertical accelerations as the load, and electrical circuitry in which the accelerometer and the load cell are connected and from which said signal is obtained, the accelerometer varying the voltage applied to the load cell and being connected to suppress the occurrence in the electrical signal of an inertial component produced by vertical acceleration of the load being weighed, said electrical circuitry including a linear amplifier having input terminals connected to receive the electrical output of the accelerometer and output terminals connected to apply the amplified electrical output of the accelerometer to input terminals of the load cell whereby the electrical output of the load cell constitutes said signal.
Claim 3
Dependent Claim
138 words
Apparatus for providing an electrical signal significant of the true weight of a load experiencing vertical accelerations while being weighed, comprising a carrier on which the load is placed during weighing, wherein the improvement comprises a load cell through which the apparent weight of the load is transmitted to a support, an accelerometer mounted to be subject to the same vertical accelerations as the load, and electrical circuitry in which the accelerometer and the load cell are connected and from which said signal is obtained, the accelerometer being connected to suppress the occurrence in the electrical signal of an inertial component produced by vertical acceleration of the load being weighed, said load cell providing an electrical output which is significant of the apparent weight of the load and which is fed through the accelerometer to provide said signal.
Claim 4
Dependent Claim
138 words
Apparatus for providing an electrical signal significant of the true weight of a load experiencing vertical accelerations while being weighed, comprising a carrier on which the load is placed during weighing, wherein the improvement comprises a load cell through which the apparent weight of the load is transmitted to a support, an accelerometer mounted to be subject to the same vertical accelerations as the load, and electrical circuitry in which the accelerometer and the load cell are connected and from which said signal is obtained, the accelerometer being connected to suppress the occurrence in the electrical signal of an inertial component produced by vertical acceleration of the load being weighed, said load cell providing an electrical output which is significant of the apparent weight of the load and which is fed through the accelerometer to provide said signal.
Claim 5
Dependent Claim
28 words
Apparatus as claimed in claim 2, in which the electrical circuitry includes a linear amplifier having input terminals connected to receive the electrical output of the load cell.
Claim 6
Dependent Claim
27 words
Apparatus as claimed in claim 2, in which the load cell is used to modulate a carrier signal in accordance with the apparent weight of the load.
Claim 7
Dependent Claim
75 words
Apparatus as claimed in claim 4, in which an alternating current from an oscillator is fed to the load cell which is constituted as a differential transformer producing a modulated electrical output significant of the apparent weight of the load, the modulated electrical output is fed to a demodulator and the accelerometer is connected to receive the electrical output of the demodulator and to provide said signal significant of the true weight of the load.
Claim 8
Dependent Claim
28 words
Apparatus as claimed in claim 5, in which said signal significant of the true weight of the load is fed to a readout device through an operational amplifier.
Claim 9
Dependent Claim
127 words
Apparatus for providing an electrical signal significant of the true weight of a load experiencing vertical accelerations or tilting while being weighed, comprising a carrier on which the load is placed during weighing, a load cell through which the apparent weight of the load is transmitted to a support and which provides an electrical output, an accelerometer sensitive to tilting mounted to be subject to the same vertical accelerations or tilting as the load, and electrical circuitry in which the accelerometer and the load cell are connected and from which said signal is obtained, the accelerOmeter being coupled to the output of the load cell to suppress the occurrence in the electrical signal of a component produced by vertical acceleration or tilting of the load being weighed.
Claim 10
Dependent Claim
127 words
Apparatus for providing an electrical signal significant of the true weight of a load experiencing vertical accelerations or tilting while being weighed, comprising a carrier on which the load is placed during weighing, a load cell through which the apparent weight of the load is transmitted to a support and which provides an electrical output, an accelerometer sensitive to tilting mounted to be subject to the same vertical accelerations or tilting as the load, and electrical circuitry in which the accelerometer and the load cell are connected and from which said signal is obtained, the accelerOmeter being coupled to the output of the load cell to suppress the occurrence in the electrical signal of a component produced by vertical acceleration or tilting of the load being weighed.
Claim 11
Dependent Claim
28 words
Apparatus as defined in claim 7 in which the electrical circuitry includes a linear amplifier having input terminals connected to receive the electrical output of the load cell.
Claim 12
Dependent Claim
27 words
Apparatus as defined in claim 7 in which the load cell is used to modulate a carrier signal in accordance with the apparent weight of the load.
Claim 13
Dependent Claim
75 words
Apparatus as defined in claim 9 in which an alternating current from an oscillator is fed to the load cell which is constituted as a differential transformer producing a modulated electrical output significant of the apparent weight of the load, the modulated electrical output being fed to a demodulator and the accelerometer being connected to receive the electrical output of the demodulator and to provide said signal significant of the true weight of the load.
Claim 14
Dependent Claim
28 words
Apparatus as defined in claim 10 in which said signal significant of the true weight of the load is fed to a readout device through an operational amplifier.
Claim 15
Dependent Claim
113 words
Apparatus for providing an electrical signal significant of the true weight of a load experiencing vertical accelerations while being weighed, comprising a carrier on which the load is placed during weighing, a load cell through which the apparent weight of the load is transmitted to a support and which provides an electrical output which is significant of the apparent weight of the load, and an accelerometer mounted to be subject to the same vertical accelerations as the load and coupled to receive the output of the load cell to suppress the occurrence in the output of a component produced hy vertical acceleration of the load being weighed to provide said true weight signal.
Claim 16
Dependent Claim
113 words
Apparatus for providing an electrical signal significant of the true weight of a load experiencing vertical accelerations while being weighed, comprising a carrier on which the load is placed during weighing, a load cell through which the apparent weight of the load is transmitted to a support and which provides an electrical output which is significant of the apparent weight of the load, and an accelerometer mounted to be subject to the same vertical accelerations as the load and coupled to receive the output of the load cell to suppress the occurrence in the output of a component produced hy vertical acceleration of the load being weighed to provide said true weight signal.
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |