Weighing device

Details Weighing device Weighing device

1976-08-12

1977-11-01

Hartary, Joseph W.

Weighing scales

Self-positioning

Fluid transmission to pressure gauge

73418, 177254, G01G 504

Patent

active

040561569

ABSTRACT:
Combination hydraulic-pneumatic weighting scale which has a base in which is located multiple load cell units to effect displacement of a quantity of hydraulic fluid. A flexible conduit interconnects the load cells with the gauge. The gauge indicator is moved by an air actuated Bourdon tube and can be calibrated accurately for any specific weight up to 300 pounds. There is sufficient displacement of hydraulic fluid to compress a substantial column of air in the Bourdon tube and cause deflection of the needle. The amount of air compression within the scale gauge causes a sufficiently large deflection in the Bourdon tube to effect a large needle deflection and thus to obtain weight indications over the full range of the scale with great accuracy.

REFERENCES:
patent: 601339 (1898-03-01), Freeman
patent: 2294770 (1942-09-01), Bohannan
patent: 2516545 (1950-07-01), Brewster
patent: 2684594 (1954-07-01), Furcini

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