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:
Aug. 11, 1987
Filed:
May. 20, 1985
Applicant:
Inventors:
Richard H Rubin, West Paterson, NJ (US);
Gary Hillman, Livingston, NJ (US);
Lewis E Zarr, Sparta, NJ (US);
William K Hayes, Parsippany, NJ (US);
Assignee:
Machine Technology, Inc., Parsippany, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
B65G / ;
U.S. Cl.
CPC ...
414404 ; 414786 ; 414416 ; 414417 ; 414217 ; 414752 ; 414225 ; 414331 ; 414280 ; 4147 / ; 414609 ; 118500 ; 118729 ; 221278 ; 221211 ;
Abstract
Methods and apparatus for transferring workpieces, such as silicon wafers, between a pair of cassettes involve simultaneously and conjointly indexing the cassettes such that the cassettes are incrementally lowered as the individual workpieces are removed from one cassette and delivered to the other cassette. Such indexing of the cassettes is achieved by a single elevator mechanism adapted to support both of the cassettes such that they are vertically and horizontally offset relative to each other.