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:
Mar. 16, 2004
Filed:
Jun. 04, 2002
Tue Nguyen, Fremont, CA (US);
Tai Dung Nguyen, Fremont, CA (US);
Waypoint Technologies, Fremont, CA (US);
Abstract
A wafer transfer apparatus provides a rotational and translational motions using only one stationary motor drive. The apparatus includes a drive assembly and a transport arm assembly. The transport arm assembly includes a transport arm rotatably attached to a linking arm. The linking arm is fixedly attached to a sleeve, which is rotatably attached to a housing. A shaft runs axially through the sleeve, and coupled with the transport arm so that rotation of the sleeve relative to the shaft causes the movement of the transport arm assembly. A locking mechanism allows the shaft to be locked to the housing or to the sleeve. A motor fixedly attached to the housing and operational attached to the sleeve. When the shaft is locked to the sleeve, the motor rotates the sleeve and the shaft simultaneously, which effects rotation of the transfer arm relative to the housing. When the shaft is locked to the housing, the motor rotates the sleeve relative to the shaft, causing translation of the transfer arm relative to the housing.