Patent ID: 6248169
Filing Date: 2001-06-19
Classification: B05B,Y02P

Abstract:
A liquid coating apparatus adapted for dispensing two different liquids comprising:a liquid dispensing nozzle for dispensing a first and a second liquid,a shaft connected to a substrate platform for upward, downward and rotational movement of said platform,an upper drain cup in a toroidal shape formed in two halves intimately engaging each other along a center line for draining said first liquid, each of said two halves of the toroidal shaped upper drain cup is equipped with a drain pipe and supported by a robot arm for inward and outward movement for allowing said substrate platform to be lowered from an upper position to a lower position when said two halves are moved outwardly by said robot arms, anda lower drain cup in a toroidal shape mounted substantially concentrically with and below said upper drain cup for draining said second liquid.