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. 16, 2022
Filed:
May. 01, 2017
Tata Steel Nederland Technology B.v., Velsen-Noord, NL;
Edzo Zoestbergen, Alkmaar, NL;
Colin Commandeur, Beverwijk, NL;
Roland Jan Snijders, Wijk aan Zee, NL;
Eduard Paul Mattheus Bakker, Sint Paneras, NL;
Peter William Hazelett, Winooski, VT (US);
Douglas Alexander Hamilton, Shelburne, VT (US);
Stephen James Widdis, Colchester, VT (US);
Timothy Dean Kaiser, Colchester, VT (US);
TATA STEEL NEDERLAND TECHNOLOGY B.V., Velsen-Noord, NL;
Abstract
A method to operate an apparatus for feeding liquid metal to an evaporator device in a vacuum chamber, wherein the feed tube runs from a container adapted to contain a liquid metal to the evaporator device and wherein an electromagnetic pump is provided in the feed tube and a valve in the feed tube between the electromagnetic pump and the evaporator device. An at least partially gas permeable electromagnetic pump, which is enclosed in a pressure controlled enclosure, is used in the method wherein electromagnetic pump and the pressure controlled enclosure are controlled such that filling and draining of the evaporator device and feed tube can be done without affecting the vacuum pressure in the vacuum chamber.