Patent ID: 7954869

Claim:
A pick and place apparatus comprising: a 1 st to an n th device holding element arranged in a lengthwise direction, every one of the 1 st to the nth device holding element being connected to its neighboring one(s) of the 1 st to the n th device holding element by means of at least one pitch setting ring; a first belt having a first coupling part at an upper part thereof for being coupled to the 1 st device holding element and a second coupling part at a lower part thereof for being coupled to the nth device holding element; and a first driven pulley and a first differential pulley for being rotated by being engaged with the first belt to move the 1 st and the n th device holding element such that the 1 st device holding element moves in a direction opposite to the nth device holding element, wherein the 1 st device holding element and n th device holding element are outermost ones of the holding elements in the lengthwise direction.