| 主权项 |
1. A support leg for supporting an object, the support leg comprising:
a. An elongated outer member having a pair of elongated parallel walls separated by a space, the elongated outer member having a bottom end and an open top end; b. An elongated inner member contained within the space of the elongated outer member, the elongated inner member having opposite top and bottom ends, the elongated inner member positioned between the pair of elongated parallel walls, the top end of the elongated inner member held above the open top end of the elongated outer member, the bottom end of the elongated inner member positioned between the open top end and the bottom end of the elongated outer member; c. The pair of elongated parallel walls having a series of slots which are horizontally aligned so that the slots of one of the parallel walls is horizontally aligned with corresponding slots on the other of the parallel walls; d. The elongated inner member having upper and lower cam members rigidly attached thereto between the top and bottom ends of the inner member, the cam members each comprising a flat member having a central portion through which the elongated inner member passes and first and second pairs of opposite sides, the first opposite sides projecting from either side of the central portion so as to engage the slots when the elongated inner member is rotated into a first position, the second opposite sides clearing the elongated parallel walls such that the cams do not engage the slots when the elongated inner member is rotated into a second position. |
