Portable vehicle scales

Details Portable vehicle scales Portable vehicle scales

1974-09-12

1976-06-29

Hix, L. T.

Weighing scales

Structural installation

Vehicle

177210, G01G 1908

Patent

active

039660028

ABSTRACT:
Portable vehicle scales are described for weighing vehicle loads. The scales are low profile with a ground-engaging base. A wheel support platform is spring-supported on the base for supporting the applied wheel load. A plurality of calibrated springs support the platform with the springs being compressed in linear proportion to the magnitude of the applied load. Variable capacitor transducers are utilized to translate the change in deflection to a change in capacitance. The change in capacitance is measured by an electrical system and displaced in a digital readout device in units of weight. The variable capacitor transducers are constructed of discs of metal electrodes separated by layers of elastic dielectric material. The layers of elastic dielectric material compress in response to the deflection of the springs to change the transducer capacitance.

REFERENCES:
patent: 3000101 (1961-09-01), Giardino
patent: 3241626 (1966-03-01), Woodburn
patent: 3314493 (1967-04-01), Kennedy
patent: 3381767 (1968-05-01), Rairigh
patent: 3565195 (1971-02-01), Miller
patent: 3678378 (1972-07-01), Trott et al.

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