File: big boy, big big boy.png (855.8 KB)

855.8 KB PNG

My German Shepard likes going in and out of the house (I'm lucky enough to have a big backyard) and I have 2 cats I'm trying to keep in the house. I trained him to pull the door open with a rope, and installed two door closing hinges to close the door behind him. However, his nose has been getting rubbed raw because while he's smart enough to grab the robe, he still uses his nose to push it the rest of the way open. I already have a door closing mechanism, and I don't want to spend 300 dollars installing an automatic button activated door opener/closer. Any recommendations for a cheap pulley or winch or something that can: 1. Be opened via a button 2. Can be programmed to release it's tension after a few seconds, so that it lets the load (the door) go?