Abstract: An access device for providing access between a lower level and an upper level, the access device including a main body which includes a first body section and a body section pivotally connected to the first body section, said first section being mounted for pivotal movement about a main body fixed pivot mounting between an access position and a stowed position, a drive mechanism operable to cause movement of the first body section between the access and stowed positions, the first and second body sections being pivotally movable between an extended position in which they are disposed generally end to end and a retracted position in which they disposed generally side by side, and a control link assembly for controlling the movement of the first and second body sections between the extended and retracted positions.

Abstract: An access device for providing access between a lower level and an upper level, the access device including a main body which includes a first body section and a body section pivotally connected to the first body section, said first section being mounted for pivotal movement about a main body fixed pivot mounting between an access position and a stowed position, a drive mechanism operable to cause movement of the first body section between the access and stowed positions, the first and second body sections being pivotally movable between an extended position in which they are disposed generally end to end and a retracted position in which they disposed generally side by side, and a control link assembly for controlling the movement of the first and second body sections between the extended and retracted positions.

Abstract: A locking arrangement (1) for releasably securing two members (2) and (4), such as wear plates to mining or earthmoving equipment. A first of the members (4) is provided with an anchor (5) which has a lip (7). A second of the members (3) is provided with a cutout (10), having a tongue (8), shaped to be positioned underneath the lip (7). Once the two members are aligned, one or more keeper (9) is placed and secured within the remainder of the cutout (10). The keeper may be of solid or hardenable material (FIGS. 1, 6), or may be formed by interlocking portions (FIG. 10).