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:
May. 16, 2000
Filed:
Sep. 30, 1997
Applicant:
Inventors:
Assignee:
Kabushiki Kaisha Shinkawa, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65G / ;
U.S. Cl.
CPC ...
41433116 ; 414417 ; 414936 ;
Abstract
A device for preventing wafer rings from being caught on a pair of guide rails of a wafer ring conveying apparatus, including an open-and-close mechanism which moves the pair of guide rails in a closing direction when a wafer ring is supplied onto the guide rails from the wafer ring cassette so as to correct the rotational orientation and/or offset of the wafer ring.