초록 ▼

A foldable step steel (10) includes a frame 12 having front and rear legs (14, 16) and top, middle, and bottom steps (34, 36, 38). A central step link (40) is coupled to the rear portion of each step (34, 36, 38) to support the steps when step stool (10) is unfolded and to control pivoting movement

A foldable step steel (10) includes a frame 12 having front and rear legs (14, 16) and top, middle, and bottom steps (34, 36, 38). A central step link (40) is coupled to the rear portion of each step (34, 36, 38) to support the steps when step stool (10) is unfolded and to control pivoting movement of the steps relative to front leg (14) during folding of step stool (10). A releasable latch (22) is coupled to a rear portion of top step (34) and configured to engage an upper cross strut (180) included in rear leg (16) to retain step stool (10) in an unfolded use position.

대표청구항 ▼

1. A step stool comprisinga frame including a front leg and a rear leg coupled to the front leg to move relative to the front leg between an opened position and a closed storage position, steps coupled to the front leg to move between a horizontal use position when the rear leg is in the opened use

1. A step stool comprisinga frame including a front leg and a rear leg coupled to the front leg to move relative to the front leg between an opened position and a closed storage position, steps coupled to the front leg to move between a horizontal use position when the rear leg is in the opened use position and a storage position when the rear leg is in the storage position, a step link pivotably coupled to the steps to coordinate simultaneous movement of the steps between the use and storage positions, a tray pivotably coupled to the frame to move between a horizontal use position when the rear leg is in the opened use position and a storage position, and a tray link pivotably coupled to one of the steps and to the tray to coordinate simultaneous movement of the tray between the use and storage positions when the steps move between the use and storage positions.