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:
Oct. 01, 2024
Filed:
Mar. 22, 2018
Applicant:
Vat Holding Ag, Haag, CH;
Inventors:
Assignee:
VAT Holding AG, Haag, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65G 47/91 (2006.01); H01L 21/673 (2006.01); H01L 21/677 (2006.01);
U.S. Cl.
CPC ...
H01L 21/67373 (2013.01); B65G 47/91 (2013.01); H01L 21/67389 (2013.01); H01L 21/67772 (2013.01);
Abstract
A safeguarding device includes one or more positive-fit units that safeguard a wafer-transport-container opening element of a wafer transport container, which is held in its closure position by a closing mechanism. The closing mechanism includes one or more chambers, which includes a pressure connection channel that allows a variation of an inner pressure in the chamber relative to a reference pressure. A differential pressure is calculated from the inner pressure of the chamber and the reference pressure and influences a safeguarding status of the positive-fit unit.