Abstract: A creeper (10) includes a first frame portion (11) and a second frame portion (12). The frame portions (11, 12) are connected to each other only by longitudinally extending rails (13). Each frame portion (11, 12) is generally U-shaped having arms (16) which carry caster assemblies (18) and a base member (17) which interconnects the arms (16). The rails (13) extend between the base members (17) of the frames (11, 12).

Abstract: A device (10) which assists a person (P) in working on the engine (E) of a vehicle (V) includes a base member (11) which rests on the ground and has a socket (17) extending upwardly therefrom. A post assembly (23) includes a stem portion (24) which is selectively positionable within the socket (17). The stem portion (24) is provided with a plurality of opposed spaced apertures (27), and a pin (28) is inserted through a selected of the opposed apertures (27) and through apertures in the socket (17) to adjust the height of the device (10). A step (29) is carried by the stem portion (24) at a selected height by a pin (31) received through the selected apertures (27) and through apertures in a flange (30) carried by the step (29).

Abstract: A mobile chair (10) includes a padded seat portion (12) which carries a backrest portion (13). At least five legs (15) support the underside of the seat portion (12) and are each provided with a caster assembly (16). A shelf (22) is carried by the legs (15) near the bottom thereof. A tray assembly (24) is pivotally carried on one of the legs (15) and is attachable to an adjacent leg (15) by a magnet (30) or the like.

Abstract: A mechanic's creeper (10) includes a pad (12) supported between a plurality of side rails (14) by a plurality of crossbars (15). The side rails (14) are of tear-shaped cross section such that no sharp edges are provided adjacent to the pad (12) held between the side rails (14). The pad (12), side rails (14), and crossbars (15) are held off the ground by a plurality of caster assemblies (20). The caster assemblies (20) are connected only to the bottom surface (16) of the side rails (14) such that no protrusion is created on the top surface (17) of the side rails (14). Specifically, each of the caster assemblies (20) is connected to an associated side rail (14) by a rivet nut (54) that communicates only with the bottom surface (16) of side rail (14). The caster assemblies (20) further include rolling elements (24, 26) and bearing races (32, 34) that allow the caster assemblies (20) to rotate about the axis of a kingpin (42).