Abstract: A creeper (10) includes a main frame (11) which is rendered mobile by caster assemblies (14, 15, 16). A pivot frame (22) is pivotally attached to the main frame (11) and carries a pad section (19). Another pivot frame (28) is pivotally attached to the main frame (11) and carries another pad section (20). A floating frame holding mechanism (50) is provided to maintain a selected pivotal position of the pivot frame (22) relative to the main frame (11), and a frame holding mechanism (34) is provided to maintain a selected pivotal position of the other pivot frame (28) relative to the main frame (11).

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 device (10) which can be transformed between creeper and chair configurations includes a support frame (15) which pivotally carries a first pivotal frame (16) and a second pivotal frame (17). The support frame (15) carries caster assemblies (21, 22, 23) which are positioned to render the device safely mobile in either configuration. A pad (12) is carried by the first pivotal frame (16) and serves as a headrest when the device is in the creeper configuration and a backrest when the device is in the chair configuration. A second pad (13) is hinge connected to the first and second pivotal frames (16, 17) and is maintained horizontal as it translates from the mid-body support of the creeper to a seat for the chair. A third pad (14) is carried by the support frame (15) and serves as a shelf under the second pad (13) when in the chair configuration.

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).

Abstract: A seat (10) especially adapted for use by a mechanic includes a frame (11) which carries a seat cushion (21) and a lower tray (22). A tray frame (35) removably carries an upper tray (30) and is pivotally attached to the frame (11) by a pivot assembly (40). The pivot assembly (40) includes a hollow rod (41) attached to the tray frame (35). A coil spring (42) which carries pivot pins (43, 44) is slidably received in the rod (41). The pins (43, 44) engage the frame (11) so that the tray frame (45) and the upper tray (22) carried thereby are pivotal from a first position generally under the seat cushion (21) to a second position at least partially out from under the seat cushion (21) for ready access to items carried by the upper tray (22). The frame (35) may be maintained in the first position by a fastener (45) carried by the frame (35) and engageable with the frame (11).