Abstract: A weighing scale having a shock-absorbing platform support. The scale comprises a scale platform seated on a platform saddle, a scale base, a load-cell transducer having first and second body portions separated from one another, and a platform shock-mount. The platform shock-mount includes a Y-shaped transducer-support frame formed with three arms each having an extremity extended from a central frame junction with the scale platform saddle being fixed to the first transducer body portion and the second transducer body portion being fixed to the central frame junction, a preloaded spring assembly carried on the base and having a spring resiliently supporting each arm extremity of the Y-frame on the base, and a set of adjustable platform motion-limit stop screws.

Abstract: A weigh scale comprising a platform, a base, a transducer coupled to the platform, and a shock-absorbing compound spring having two serially-connected sections. One spring section flexes most favorably in a vertical direction and the other section in a horizontal direction. The compound spring moveably supports the transducer on the base so that shock forces applied to the platform from different directions are absorbed by the spring to prevent permanent distortion of the transducer and the resulting erroneous weight readings.

Abstract: A battery-powered alarm and reset circuit for a conventional electromechanical countdown timing mechanism which drives a set of cam-actuated main contacts. The circuit renders both a visual and an audible alarm at zero countdown time. The rotation of a timer knob closes the main contacts which readies the digital NAND gate logic of the circuit to a state preliminary to oscillation. At zero countdown time, one of the NAND gates goes into oscillation to generate a sequence of relatively low-frequency pulses in response to the opening of the main contact at zero countdown time. The low-frequency pulses activate an LED light to render a visual blinking alarm and an electrical horn to render an audible beeping alarm. Both alarms continue indefinitely until momentary manual closure of a reset switch stops the NAND gate from oscillating.