Abstract: A microprocessor speed control system for a refrigeration apparatus for controlling a speed of at least one variable speed motor is provided. The control system has an input for receiving demands to vary a speed of the motor and a memory where certain predetermined speed ranges are kept in a means for preventing the motor from being operated at the predetermined speed ranges. The predetermined speed ranges can be based upon speed ranges which cause excessive noise or vibration in the refrigeration appliance or any of its components.

Abstract: A field installable service kit is disclosed for foamed in place refrigerator stile heaters that do not provide adequate heat around the front of the cabinet, to prevent external condensation under hot and humid conditions. The kit includes a transformer which is mounted on the back of the refrigerator by a service technician and connected directly in line with the stile heater wire connection. The transformer steps up the voltage from approximately 115 volts to approximately 160 volts, thereby approximately doubling the wattage on the resistance heater wire.

Abstract: A refrigerator cabinet includes an outer shell having a transverse flange terminating in a channel generally parallel with the flange and opening transversely inwardly. A flange reinforcement assembly includes four corner brackets spot welded rearwardly of the channel, and two reinforcement bars. An adhesive material is disposed between the reinforcement bars and the rear of the channel to adhere the same and to comprise the sole means for retaining the reinforcement bars to the cabinet.

Abstract: A rotary compressor having a blade slidably carried in a slot in a rotor within the compression cylinder. The opposite ends of the blade are in contact with the cylinder walls at all times, notwithstanding the nonsymmetrical configuration of the cylinder bore. The nonsymmetrical configuration arises from the addition of a cycloidal cam function to the bore equation in the first quadrant and the subtraction thereof from the bore equation in the third quadrant. The cylinder contour resulting from the provision of the cycloidal cam function provides increased operating efficiency in the rotary compressor and allows the length of the transfer slot thereof to be reduced or eliminated so as to reduce recompression volume of the compressor.