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:
Jan. 15, 2002
Filed:
May. 27, 1999
Advantest Corporation, Tokyo, JP;
Abstract
An electronic device tray having a plurality of IC holders in which IC chips are held and having a shutter for opening and closing openings of the IC holders , the shutter being opened and closed by fluid pressure cylinders etc. provided at an IC tester. Further, a tray vertical carrier for conveying a tray holding IC chips in a substantially vertical direction, including a tray end holding member able to detachably hold an end of the lowermost level tray positioned at the lowermost level among stacked trays , a tray elevating member for conveying the lowermost level tray downward or upward, an actuator member for driving the tray end holding member so as to release the hold on the lowermost level tray and then hold the end of another tray next arriving at the lowermost level position when the lowermost level tray is in a state where it can be supported by the tray elevating member , and a tray horizontal carrier receiving the lowermost level tray when the tray elevating member descends and able to move in the substantially horizontal direction, the tray horizontal carrier being moved by a drive wire