Gm Global Technolgoy Operations, Inc.

John Weibel, Jr

Donald C Ferdelman

Ralph S Braden

Homer W Deaton

Dale A Beard

Edgar W Stienecker

An automatic ice maker control circuit having an improved tolerance to sense the presence of stuck ice pieces in a predetermined pocket of an ice tray. A solid state temperature sensor and time delay circuit includes an operational amplifier controlled by a temperature sensor in one portion of a bridge network for sensing above or below freezing temperatures in the pocket, depending upon the presence of liquid or a stuck cube respectively, in said sensing pocket. The ice maker is conditioned for immediate harvest after the below freezing temperature is effected in the tray pocket when the sensor senses an above-freezing temperature. The time delay circuit conditions the ice maker for a delayed harvest until the predetermined temperature is effected in the tray sensing pocket if the sensor senses a below-freezing temperature.

Tray ice maker

A room air conditioner unit having an electric timer located at the control area with the timer including a timer motor which runs continuously and a timer switch electrically connected in the unit's control circuit with a manually operable multiple selector switch. Upon the timer switch being preset to open and close the control circuit allows the user to select either a timed electricity saver mode wherein the fan motor cycles on and off with the compressor or a timed cooling mode wherein the fan motor runs continuously while the compressor is cycled by the unit thermostat.

Room air conditioner with timer

A room air conditioner having oscillatable vertical vanes pivotally mounted to be driven by a horizontally movable notch tie bar which is oscillated in the direction of its length to provide horizontal air sweep. The vanes have a pressure relief arrangement in the form of a vertical living hinge integrally provided as a part of each vane to reduce breakage. The vanes are provided with drive arms terminating in pivot pins which are snapped into driving engagement with resilient arms formed on the tie bar.

Growing community of inventors

Dayton, OH, United States of America

John Weibel, Jr