Patent ID: 7040852

Claim:
A robot arm mechanism, comprising: a first handling member for supporting and handling a first object; a second handling member for supporting and handling a second object; a first robot arm including a first arm link having a first end portion, a second end portion and a central line passing through said first end portion and said second end portion, and a second arm link having a first end portion, a second end portion and a central line passing through said first end portion and said second end portion, said first end portion of said second arm link being pivotably connected to said second end portion of said first arm link, and said second end portion of said second arm link being connected to said first handling member to allow said first handling member to support said first object in a stable condition; a second robot arm including a first arm link having a first end portion, a second end portion and a central line passing through said first end portion and said second end portion, and a second arm link having a first end portion, a second end portion, a central line passing through said first end portion and said second end portion, said first end portion of said second arm link being pivotably connected to said second end portion of said first arm link, said second arm link being inclined with respect to said second arm link of said first robot arm at a preset angle defined between said central line of said second arm link of said second robot arm and said central line of said second arm link of said first robot arm, and said second end portion of said second arm link being connected to said second handling member to allow said second handling member to support said second object in a stable condition; a robot arm moving mechanism connected to said first arm links of said first and second robot arms for allowing one of said first arm links of said first and second robot arms to be angularly moved respect to the other of said first arm links of said first and second robot arms; and an angle keeping mechanism connected to said second arm links of said first and second robot arms for keeping substantially fixed said preset angle defined between said central line of said second arm link of said second robot arm and said central line of said second arm link of said first robot arm as one of said first arm links of said first and second robot arms is angularly moved with respect to the other of said first arm links of said first and second robot arms.