US Patent 11837485 Substrate holding hand and substrate conveying apparatus

Substrate holding hand including a base plate spreading from base toward tip end sides, part of base plate located at base end side, fixed to hand tip portion, holding position at base plate, engaging claw at part of base plate located at tip end side, engaging claw configured to engage part of edge of substrate in vertical or inclined postures, part of edge located lower than center of substrate, moving portion at base end side of holding position and configured to move toward tip end side, and plurality of rotating bodies at the moving portion, being pressed by movement against edge of substrate located lower than holding position and engaged with claw, and plurality of rotating bodies pushing substrate upward holding position while rotating along edge of substrate.