Gravity bias for display elements

Details Gravity bias for display elements Gravity bias for display elements

1975-07-31

1976-11-16

Chamblee, Hugh R.

Card, picture, or sign exhibiting

Check, label, or tag

Reinforced

40 52R, G09F 1100

Patent

active

039914968

ABSTRACT:
A disc rotatable to exhibit alternately one of its two faces under the influence of an external magnetic field, has its center of gravity offset with respect to the pivoting plane so as to ensure a positive torque when moving from either of its rest positions under the influence of the said magnetic field.

REFERENCES:
patent: 1191023 (1916-07-01), Naylor
patent: 3365824 (1968-01-01), Winrow
patent: 3624941 (1969-12-01), Chantry
patent: 3745563 (1973-07-01), Jones et al.

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