Digital display scale

Details Digital display scale Digital display scale

1989-11-17

1990-08-28

Miller, Jr., George H.

Weighing scales

Self-positioning

Electrical current generating or modifying

7386264, G01G 314, G01L 114

Patent

active

049517643

ABSTRACT:
An improved digital display scale of the type with a load receiver acting on an arrangement of two parallel leaf springs which are movable relative to a base member, in which the leaf springs, a mounting support on the base and a load receiver supporting structure together form a parallelogram, and a capacitor with a pair of closely spaced capacitor plates the spacing between which changes under load to change capacitance and thereby serve as an indicator of load. One of the two capacitor plates is between the leaf springs and connected to the mounting support through an insulating piece. The other capacitor is formed by one of the leaf springs. Various preferred embodiments are also disclosed and claimed.

REFERENCES:
patent: 4308929 (1982-01-01), Estavoyer
patent: 4394885 (1983-07-01), Dauge et al.
patent: 4582152 (1986-04-01), Gibbons
patent: 4649759 (1987-03-01), Lee
patent: 4846293 (1989-07-01), Li
patent: 4846294 (1989-07-01), Sato
patent: 4856603 (1989-08-01), Murakoso et al.

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