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:
Feb. 09, 1982
Filed:
Oct. 16, 1979
Applicant:
Inventors:
Assignee:
The Electricity Council, , GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ; H01J / ;
U.S. Cl.
CPC ...
2191 / ; 2191 / ; 2191 / ; 313 30 ; 313 46 ; 313452 ; 313297 ; 313306 ; 16510421 ; 4221864 ; 422903 ;
Abstract
Dimensional stability of an electron discharge heating device having electrodes for focussing the discharge current is improved by providing one or more heat pipes for transferring heat from an electrode to cooling fins outside the vacuum chamber. In one embodiment, a second electrode is water-cooled. The improved cooling not only permits of use of a structure which takes a short time to reach thermally stable conditions due to the small heat capacity of the solid material but also permits of different parts of the gun assembly being operated at different temperatures.