The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 29, 1999
Filed:
Oct. 06, 1997
Abstract
A substrate treating apparatus for performing a predetermined treatment of a substrate in a spin, has a spin motor including a rotor having a hollow opening centrally thereof, and a stator disposed coaxially with the rotor and having a hollow opening centrally thereof. The rotor includes holders for supporting the substrate in three peripheral positions thereof. A support mechanism switches the holders between a position for supporting the substrate, and a position retracted therefrom. The opposite surfaces of the substrate supported by the holders are cleaned with a cleaning solution supplied through nozzles. The holders have a substrate supporting force derived from a weight and magnetism of the support mechanism, to support the substrate reliably. A guide is disposed in the hollow of the rotor, and connected to the rotor. The holders are arranged in a substrate treating space formed inwardly of the guide. The holders are arranged on the guide. Thus, the spin motor is protected from exposure to a treating solution atmosphere.