초록 ▼

Method and apparatus for removably affixing a wheel assembly (20) near the end and the edge of a leg (24,27) of nearly any existing or newly manufactured ladder (22) to aid a person (26) transporting the ladder (22). A preferred embodiment includes a first wheel (30a) and a second wheel (30b) whose

Method and apparatus for removably affixing a wheel assembly (20) near the end and the edge of a leg (24,27) of nearly any existing or newly manufactured ladder (22) to aid a person (26) transporting the ladder (22). A preferred embodiment includes a first wheel (30a) and a second wheel (30b) whose axles (32a, 32b) are disposed orthogonally. Each axle (32a, 32b) is supported by a bracket (34a, 34b) coupled to a clamp frame (36) which is clamped to said leg (24,27). When the ladder (22) is placed, edge parallel to a supporting surface (28), and a person (26) carries the opposite end of the ladder, the wheel (30b) will roll on that surface (28). When the ladder (22) face is placed parallel to a supporting surface (28) and a person (26) carries the opposite end of the ladder, the wheel (30a) will roll on that surface (28). The wheel (30a, 30b) will carry a large portion of the weight of the ladder (22). For persons who use ladders frequently, the system can prevent personal injuries. The wheel assembly (20) does not interfere with erection or use of the ladder (22).

대표청구항 ▼

1. An apparatus comprising: a ladder assembly (84); said ladder assembly (84) having a plurality of legs (24, 27) and a plurality of steps (23); each of said legs (24, 27) including a front surface (24a, 27a); two side surfaces (24b, 27b); and a back surface (24c, 27c); a wheel assembly (50) for

1. An apparatus comprising: a ladder assembly (84); said ladder assembly (84) having a plurality of legs (24, 27) and a plurality of steps (23); each of said legs (24, 27) including a front surface (24a, 27a); two side surfaces (24b, 27b); and a back surface (24c, 27c); a wheel assembly (50) for supporting an end of said ladder assembly (84); said wheel assembly (50) being removably affixed to said end and at an edge of one of said plurality of legs (24, 27); said wheel assembly (50) being adapted and free to roll on a supporting surface (28) when a face of said ladder assembly (84) is oriented orthogonally to supporting surface (28); and said wheel assembly (50) being aligned so as to support a substantial portion of weight of said ladder assembly (84) while being able to roll on said supporting surface (28); said wheel assembly (50) being located on a side surface (24b, 27b) of said plurality of legs (24, 27); said wheel assembly (50) being located on said ladder assembly (84) in a position which does not interfere with erection or use of said ladder assembly (84); and a user (26), by grasping an end of said ladder assembly (84) opposite to said extreme end to which said wheel means (50) is affixed, being then able to easily maneuver said ladder assembly (84) from one location to another.