Bakeware, Tableware, Drinkware and Cookware Design LockBlock Self Locking Knife Block by Dan Kulp Ideal for parents with young children, LockBlock provides the perfect solution for safely storing kitchen knives. The innovative design locks knives inside the block and requires an adult-sized hand to operate it. As each knife is placed inside a knife slot, its blade is held securely by the unique Cam-lock mechanism. Pulling on the knife only increases the force of the grip, so knives cannot be forced out of the block. LockBlock is available as a stand-alone product with universal knife slots for consumer’s existing knives, or with its own set of six high-quality knives.