Patent ID: 8297406
Filing Date: 2012-10-30
Classification: E06C

Abstract:
1. A device capable of extending a foot end of a ladder comprising: a box tube section being slidably received in a channel shaped rail of the ladder, having a large side with a first elongated hole disposed at the middle of said large side, and an end extending outside the rail and being provided with a foot pad, wherein the rail is provided a through hole; a U-shaped long engaging plate being slightly shorter than, received in and fixedly attached to the box tube section, and having a large side with a second elongated hole disposed at the middle thereof corresponding to the first elongated locating hole and two opposite lateral sides disposed with a plurality of inserting teeth with an equal pitch respectively; a U-shaped short engaging plate being received in the box tube section to face the long engaging plate, having a large side and two lateral sides, wherein the large side has a fixing hole at the center thereof corresponding to the through hole, two engaging slots next to the two lateral sides respectively to correspond to the inserting teeth, an engaging nut disposed next to and aligning with both the central fixing hole and the through hole; a knob head bolt adapted to pass through the first and second elongated holes and the central fixing hole and engaging with the nut via the through hole; whereby, when the knob head bolt is loosened to allow the inserting teeth disengaging from the engaging slots, the box tube section with the foot pad is capable of being pulled downward or pushed upward to adjust the box tube section a distance extending outward the rail; when the knob head bolt is tightened to allow the inserting teeth engaging with the engaging slots, the box tube section with the foot pad is incapable of being moved to secure the box tube section in a specific place.