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. 11, 2003
Filed:
Jul. 13, 2001
Frederick T. Rosenquist, Redwood City, CA (US);
Asyst Technologies, Inc., Fremont, CA (US);
Abstract
A SMIF load port assembly is disclosed including a port door position compensation assembly capable of dynamically adjusting a relative spacing between a front surface of a port door and a front surface of a pod door loaded onto the load port assembly so as to compensate for any improper positioning of the front surface of the pod. The position compensation assembly includes a plunger translationally mounted in the port door, and a sensor for detecting a position of the plunger. As a pod is loaded onto the load port assembly is advanced toward the port door, the front surface of the pod door contacts the plunger at which point the position compensation assembly in combination with an overall controller can identify the exact position of the pod door. From this identification, the position of the port and/or pod doors may be adjusted to compensate for any improper positioning of the front surface of the pod door on the load port assembly.