It’s not that drones get tired, it’s just that if they’re delivering your box of cat food and low-rise socks, dropping down to put it on your patio and flying back up for the next delivery takes power that they need to conserve.Better to just hover over your home and drop the box, a new patent from Amazon proposes.Amazon on Tuesday received a patent for cushioning packages with inflatable air bags, so they can be dropped from as high as 25 feet.The drone could inflate the “airlift package protection air bag” with a gas canister or even just from the downdraft from the aircraft’s propellers, while in transit or “near a drop location, such as a backyard or patio of a residential dwelling,” the patent said.This patent, like at least two others Amazon has received, also envisions the possibility of catastrophic mid-air failure.