Importance

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Abstract

A scale used for weighing an object or material. The scale includes a platform arranged to move upon receipt of a material thereon, frame means, a variable capacitor having a movable plate and a stationary plate, springs means which is coupled both to the frame means and to the platform, suspension means for coupling the platform to the frame means and leg support means for supporting the scale on a supporting surface. The suspension means includes an assembly having a horizontally disposed bar which is flexible in the up/down direction so as to permit ready adjustment of that assembly. The movable plate support means includes a bracket member having a thin flexible finger portion which is joined to the frame means so as to preclude distortion of the frame assembly from being transmitted to the upper capacitor plate. The lower capacitor plate is coupled to the spring means by a bracket which includes a thick portion and a thin portion. The thin portion is connected to the capacitor plate and is rigid in the up/down direction but flexible in other directions so as to permit the movable plate to expand or contract due to thermal or other effects. The frame assembly includes a vertical end plate and side elements such that the side elements are connected to the vertical end plate in a manner designed to minimize distortion and twist from being transmitted from the vertical plate to the other portions of the frame. The leg support means includes three legs, one of which includes a thin flexible stem portion enabling it to flex or twist so as to permit the scale to remain undeformed by an uneven supporting surface.

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First Claim