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:
Jan. 01, 1980
Filed:
Oct. 13, 1978
Thaddaus Kraus, Triesen, LI;
Balzers Aktiengesellschaft fur Hochvakuumtechnik und Dunne Schichten, Liechtenstein, LI;
Abstract
A method of producing a high vacuum in a container which has limiting walls hich define a reaction chamber which is adapted to be evacuated for vacuum processing purposes, and in which gases are sorbed during vacuum operation and the gases are removed subsequently by increasing the temperature of the walls and evacuating the chamber at the same time includes heating the reaction chamber, sensing the underpressure in the reaction chamber and controlling the heating of the chamber in accordance with the sensed pressure in a manner such that the underpressure remains within a preselected upper and lower limit value until a predetermined temperature of the walls is attained.