Abstract: A device is provided for use in releasably securing one unit (e.g., the rear end of a truck vehicle) against a second unit (e.g., a loading dock). The device comprises an elongated member mounted for controlled endwise movement relative to a locking assembly, the latter being adjustably mounted on the loading dock. Carried by the elongated member and extending from an end thereof towards the truck is an attaching means which is secured to the truck. A friction means is adjustably mounted within the locking assembly for movement between operative and inoperative positions. When in an operative position, the elongated member can be moved endwise in only one direction away from the truck. When in an inoperative position, the elongated member can be moved in either endwise direction relative to the locking assembly. The friction means is biased to normally assume an operative position.

Abstract: A leveler assembly is provided for mounting within a pit which is normally formed in a loading dock. The pit includes a base recessed a substantial distance below the platform surface of the dock, a rear wall, an open top and an open front side. The assembly includes a frame anchored within the pit adjacent the base thereof. The frame includes a front section disposed adjacent the open front side of the pit and recessed a substantial distance from the open top. The frame also includes a rear section having a top portion disposed adjacent to but beneath the pit open top. Hingedly connected to the rear section top portion is a loading bearing deck member which is adapted to normally assume a neutral position, wherein the exposed surface thereof is substantially coplanar with the dock platform surface. Adjustably connected to the underside of the deck member at a location spaced rearwardly a substantial distance from the front edge of the deck member is a first fluid pressure-responsive telescoping component.