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:
Jul. 26, 1988
Filed:
Jan. 20, 1987
Applicant:
Inventor:
Allan Sanderson, Duxford, GB;
Assignee:
The Welding Institute, Cambridge, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
21912127 ; 21912113 ; 21912125 ;
Abstract
A charge particle beam generator is described which comprises an annular arrangement of filaments (6) which, when heated, emit electrons. A microprocessor controller (not shown) causes a voltage to be applied across each filament (6) in succession so as to cause the filament to generate electrons. An annular anode (9) is provided radially inwardly of the filaments (6) to accelerated electrons away from the filaments in the form of a beam towards a joint between a pair of workpieces to be welded.