Patent · US Expired

Device and method for the control and monitoring of an electron beam for metal working

US4973818A · kind A · utility

7Cited by

3References

12Claims

0Family size

Assignee

Leybold GmBH · DE

Inventors

Harald Bittenbrunn · Hanau, DE
Friedrich-Werner Thomas · Schliersee, DE
Gernot Thorn · Hanau, DE

Key dates

Filing date	Mar 23, 1989
Grant date	Nov 27, 1990
Priority date	—
Expiry date	Mar 23, 2009

Classification

Technology area (CPC H)Electricity
CPC primaryH01J37/305
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A device and a method for the control and monitoring of a deflectable electron beam is provided for the working of metal wherein the electron beam is not permitted to go beyond an allowed working area. With this device with the aid of a Teach-In method the limits are entered into a computer. The computer generates an image of the areas allowed for the electron beam in a particular area of a special memory. This memory is so organized that the addresses of the point of the particular areas correspond to the digitized coordinates of the point of impingement of the electron beam. The characterization of the allowed and forbidden target points of the electron beam takes place through placing or deleting respectively the assigned bits in the special memories.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.