We are using this hinge in an application at work and nobody seems to know the proper name for it. We don't often use stuff like this in what we do so this is a first for us. We are referring to it as a double acting hinge but something tells me that's not right. If I do a search for a double acting hinge, nothing comes up. Would like to find some design info on it because the sample you see below is over a thousand miles from me and I don't feel like going to pick it up. Thanks.