Weighing scale with improved lever and fulcrum assembly

Details Weighing scale with improved lever and fulcrum assembly Weighing scale with improved lever and fulcrum assembly

1991-08-09

1992-07-28

Fuller, Benjamin R.

Weighing scales

Load holder

Pivotally interconnected transmission levers

177257, 177254, 177208, G01G 2108

Patent

active

051334216

ABSTRACT:
A weighing scale includes a hollow casing having a lower base and an upper covering for support an object. A pressure gauge mounted to the base includes an indicator, and a hydraulic pressure sensor connected to the indicator and actuating it in response to a sensed pressure produced by the weight of the object. Four spaced fulcrum posts are mounted to the base. A lever mechanism includes a rear one-piece rod and a pair of spaced front rods respectively and pivotably mounted to the four fulcrum posts. The rear one-piece rod includes a force exerting plate resting on the hydraulic pressure sensor. A transmitting frame provided between the covering and the lever mechanism includes a pair of spaced rods and a connecting rod mounted between the spaced rods which are pivotably mounted to the lever mechanism.

REFERENCES:
patent: 971757 (1910-10-01), Jones
patent: 1539601 (1925-05-01), Riedel
patent: 3666032 (1972-05-01), Maffia et al.
patent: 3831687 (1974-08-01), Maffia et al.
patent: 4479562 (1984-10-01), Mairot et al.

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