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:
Jul. 31, 2001
Filed:
Jun. 28, 1999
Benjamin W. Mooring, Austin, TX (US);
Nicolas J. Bright, San Jose, CA (US);
Lam Research Corporation, Fremont, CA (US);
Abstract
An interlocked control system is provided for dual sided slot valves contained in a vacuum body between each of a plurality of adjacent process and transport modules. Separate valves are provided for each of two valve body slots, one body slot being separately closed or opened independently of the other. The separate valves allow a vacuum in the transport module while an adjacent process module is open to the atmosphere for servicing. Under control of the system, the valve may allow separate operation of the transport module and certain ones of the process modules, while a selected one of the process modules is in either a maintenance state or a locked out state for servicing. The system includes a separate controller for the transport module and a separate controllers for the process modules. A control interface coordinates the flow of signals between the controllers and local devices, and system user interfaces provide inputs to the control system from operational and service personnel.