Back to results
US 2022/0384138 A1Published application
Electron beam welding systems employing a plasma cathode
OwnerJohn Noonan, Dean Waltersinventors
Life of this patent
Estimating the term…
Abstract
In an embodiment, a system is provided that includes an electron gun, a focusing system, and a housing. The electron gun can include a cold cathode electron source and an extraction electrode. The focusing system can be configured to focus a beam of electrons extracted from the electron gun to a focal region. The housing can include the electron gun and extend along a housing axis in the direction of the electron beam. The cold cathode source is configured to emit electrons at a first operating pressure that is higher than a second operating pressure at the focal region of the electron beam.
Claims20
A system, comprising:
- an electron gun including a cold cathode electron source and an extraction electrode;
- a focusing system configured to focus a beam of electrons extracted from the electron gun to a focal region;
- and
- a housing including the electron gun and extend along a housing axis in the direction of the electron beam;
- wherein the cold cathode source is configured to emit electrons at a first operating pressure that is higher than a second operating pressure at the focal region of the electron beam.
2 more elements
A method, comprising:
- generating, by an electron gun including a cold cathode source and an extraction electrode, electrons at a first pressure;
- extracting, by the extraction electrode, a electrons emitted from the cold cathode source;
- focusing a beam of the extracted electrons to a focal region along an axis of a housing containing the electron gun;
- and
- receiving, incident upon a surface of the work piece, the focal region of the electron beam, wherein a second pressure at the work piece is less than the first pressure.
2 more elements
Dependencies are inferred from the claim text.