Four Bar Mechanism Release Latch

Safety is job #1, quality is also job #1, as is innovation.

Sometimes you might be working on a project and need a way of releasing something heavy without the risk of it landing on you. This self-locking release latch can be attached to carabiners on both ends and released by pulling on a string or wire through the middle hole. If the material being held is the right size the latch will lock shut without a spring.
Due to the geometry the force needed to release the latch is pretty much inde