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:
Aug. 11, 2015
Filed:
May. 04, 2011
Applicant:
Robert A. Schill, Jr., Henderson, NV (US);
Inventor:
Robert A. Schill, Jr., Henderson, NV (US);
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 9/02 (2006.01); H01J 25/00 (2006.01);
U.S. Cl.
CPC ...
H01J 25/00 (2013.01);
Abstract
Methods and systems for electron emission are disclosed. An example system can comprise a cup-rod-needle assembly that can collect a source of electrons and allow internal space charge build-up and generation of an internal self-electric field build-up. The system can provide self-emission at a predetermined location of the needle in the system. An example system can comprise a cup-rod-needle assembly, an annular dielectric insulator as a plug, a source of electrons to provide electrons into a cup, and a beam drift tube.