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. 05, 1993
Filed:
Oct. 11, 1991
Advantest Corporation, Tokyo, JP;
Abstract
In a safety device for an IC handler in which a carrier arm and a carrier head, which carry IC elements to testing stations and carry tested IC elements from said testing stations to another position, are covered with covers for safety in such a manner that they can freely be opened and closed, a cover lock mechanism for locking the covers in their closed state and a cover unlock switch are provided. When it is detected, in the ON state of the cover unlock switch, that the IC handler is not in operation, the cover lock mechanism is unlocked by the detected output and the drive current to a motor for driving the carrier arm and the carrier head is cut off, and then it is displayed that the covers may be opened.