| 摘要 |
The present invention provides a ladder stabilizing and leveling device (21) that includes an outer housing (41) substantially fixed with respect to a ladder rail (29), and an inner housing (41) that is movable within the outer housing (41) from a retracted position to an extended position. The present invention includes a positive locking engagement system wherein the greater the force applied to the ladder rail (29), the greater the force applied to the locking engagement between the outer housing (41) and the inner housing (21). A safety bar (117) interconnects a support foot (27) and a lock block (73) wherein force applied to the support foot (27) locks the lock block (73) in position. The present invention also includes a retraction spring (53) that continually applies an upward biasing force on the inner housing (71). In addition, the present invention provides an interconnecting relationship between the outer housing (41) and the inner housing (71) wherein various ribs (111) are provided on the outer rails (89) of the inner housing (71) where the outer rails (89) contact the inner surface of the outer housing (41); this feature of the present invention allows debris, or other foreign particles, to pass substantially downward and exit the ladder stabilizing and leveling device (20).
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