Abstract: An adjustable stroller having a main carriage and a handle bar assembly, wherein the handle bar assembly is configured to convert between push and pull configurations to enable a user to either push or pull the stroller. More specifically, the adjustable stroller includes the main carriage, pulling rails comprised of handle bar tubes and telescoping rail tubes, two rear wheels attached to the main carriage and the proximal ends of the pulling rails via wheel hubs, a cross bar and center handle configured to host conversion and brake mechanism controls, and a third, front wheel to offer stability and balance. The handle bar assembly in dudes the pulling rails and the cross bar and center handle. In the pull configuration, the distal ends of the pulling rails can attach to an adjustable running belt that a user can wear around the user's waist.

Abstract: In a refrigerator, warm air is collected or drawn into a warm air return duct opening located at or near the top of the refrigerated space instead of the bottom. The warm air is passed through an evaporator where it cools. The cooled air is driven into a pressurized plenum located at the bottom of the refrigerated space. The plenum is defined by a screen extending across the bottom of the refrigerated space. Air in the plenum passes through holes in the screen and driven upward. The air flow inside the refrigerator is thus upwardly, i.e., from the bottom to the top.