SPRING LOCKED WRENCH

摘要

The wrench uses a spring driven locking mechanism to lock the movable lower jaw into position. A release bar enables the locking mechanism to be rotated, against the spring tension, to a position that releases the lower jaw for movement. Once released the spring tension returns the locking mechanism to a position that prevents movement of the lower jaw. A spring extending from the top of the stationary jaw into the lower jaw maintains the lower jaw adjacent to the upper jaw. By releasing the locking mechanism, repositioning the wrench without completed removal and then relocking the locking mechanism, the wrench can be used in a ratchet style. The locking mechanism is a multi-­toothed semi circle that interacts with the teeth on the lower jaw shaft to engage and disengage the lower jaw.