Gross-given Manufacturing Company

David C Dunnigan

Joseph A Lotspeich

Bart W Baxter

An apparatus and improved method for defrosting of the refrigeration unit of a refrigerated vending machine are disclosed. A damper controls flow of heated defrosting air in the refrigeration unit during a defrosting cycle to prevent the heated air from exiting out of the refrigerated air duct leading to the refrigerated compartment of the vending machine, thereby maintaining the desired ambient air temperature within the refrigerated compartment.

Damper apparatus for refrigerated vending machines with a defrost cycle

An apparatus and method of installing a slide-in refrigeration unit in a vending machine that automatically aligns and seals the refrigeration unit air flow ducts to the refrigerated compartment of the vending machine, is disclosed. A simple assembly guides movement of the refrigeration unit as it is slid backward into the vending machine so as to identically align a pair of mating inclined surfaces of a duct connector assembly into sealing engagement, to automatically effect air flow communication between the refrigeration unit and the refrigerated compartment. The refrigeration unit installation is completed by simple securing the slid-in unit to the floor of the vending machine with several screws or bolts.

Growing community of inventors

Buffalo, MN, United States of America

David C Dunnigan