Weighing scales – Self-positioning – Repositioning in response to deflection under load
Patent
1982-09-23
1984-07-03
Miller, Jr., George H.
Weighing scales
Self-positioning
Repositioning in response to deflection under load
177210EM, G01G 700, G01G 314
Patent
active
044573863
ABSTRACT:
A weighing system of the electromagnetic load compensation type is disclosed including a counter for counting the weight-responsive pulses which are produced during the periods that the compensating current is supplied to the movable coil to return the movable scale member toward its initial no-load position, characterized by the provision of a temperature-responsive device for supplying to the counter a train of temperature-correction pulses that are used to modify the count of the weight-responsive pulses, whereby a more accurate indication of the applied load is obtained. Thus, an analog signal from the temperature sensor is compared with a sawtooth signal to produce a digitalized temperature-responsive signal which modifies the digital weight signal supplied to the microprocessor circuit.
REFERENCES:
patent: 3084753 (1963-04-01), Hendon
patent: 3688854 (1972-09-01), Strobel
patent: 4034819 (1977-07-01), Akers et al.
patent: 4091886 (1978-05-01), Knothe et al.
patent: 4159747 (1979-07-01), Realini
patent: 4236590 (1980-12-01), Knothe et al.
patent: 4300647 (1981-11-01), Knothe et al.
Leemann Richard
Schett Oskar
Mettler Instruments AG
Miller Jr. George H.
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