Abstract: A lock that includes a wedge that is used to releasably secure separable components of an assembly together. The wedge can be used with a spool. The wedge and spool are threadedly coupled together to drive the wedge into and out of an opening in the assembly without hammering or prying. The direct coupling of the wedge and spool eliminates the need for bolts, washers, nuts and other hardware so as to minimize the number of parts. As a result, the lock is inexpensive to make, easy to use, and unlikely to become inoperative because of lost or broken parts or due to fines or other difficulties encountered in harsh digging environments. Further, the wedge can be driven into the assembly to provide the degree of tightness necessary for the intended operation and/or to re-tighten the assembly after incurring wear during use. A latch assembly is preferably provided to securely hold the wedge in place and avoid an undesired loss of parts during use.

Abstract: A wear assembly includes an adapter with a nose, a wear member with a socket to receive the nose, and a lock to secure the wear member to the adapter. The nose and socket include complementary rails and grooves that vertically diverge as they extend from the front of the nose. The lock can have a tapered construction.

Abstract: A wear assembly for attaching a wear member to a support structure that includes a wear member and a lock. The wear member includes a pair of legs to straddle the support structure, each with a hole that aligns with a hole in the support structure for receiving a lock to hold the wear member in place. Each hole includes a recess with an engagement surface facing generally away from the support structure for receiving portions of the lock. The lock includes a wedge provided with a thread formation that threadedly engages a second thread formation in the aligned holes so that rotation of the wedge axially drives the wedge.