US Patent 7446872 Positioning apparatus and positioning method using the same

Patent 7446872 was granted and assigned to Powerchip Semiconductor on November, 2008 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Powerchip Semiconductor

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

74468720

Patent Inventor Names

Yu-Cheng Yang0

Po-Ching Lin0

Date of Patent

November 4, 2008

Patent Application Number

107102700

Date Filed

June 30, 2004

Patent Primary Examiner

‌

L. G. Lauchman

Patent abstract

An apparatus for positioning a transport system and a load port is described, including a signal emitting unit disposed on the transport system and a positioning board on the load port. The signal emitting unit has two positioning points thereon capable of emitting two light beams to the positioning board, while the positioning board has two holes thereon at two positions corresponding to the two positioning points. The two light beams can pass through the two holes perpendicular to the positioning board in a horizontal state when the load port is aligned with the transport system.