I'm working on a design project and I need to find what I would call a 'cable quick release'. Basically, I need to be able to quickly release a cable that has ~3500 pounds of tension in it. Ideally, one would just use a pin you could pull out, but I'm fairly certain that would be difficult if not impossible. I've searched around google for such a device but have come up empty handed. Any ideas where I could find one or even what to call it?