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:
Dec. 24, 2024
Filed:
Feb. 08, 2024
The Government of the United States, As Represented BY the Secretary of the Air Force, Wright-Patterson AFB, OH (US);
Steven Fairchild, Beavercreek, OH (US);
Dmitri Tsentalovich, Austin, TX (US);
Nathaniel Lockwood, Alexandria, VA (US);
United States of America as represented by the Secretary of the Air Force, Wright-Patterson AFB, OH (US);
Abstract
A field emission (FE) cathode for a vacuum electronic device (VED) includes a metallic substrate configured to be connected to one of an electrical power supply and an electrical ground, and at least one continuous carbon nanotube (CNT) fiber in tension around at least a portion of the metallic substrate. The substrate can be a cylinder, hoop, plate, stub etc. The at least one continuous CNT fiber can include a filament, yarn, braided yarn, film, fabric, or combination thereof. The at least one continuous CNT fiber is secured to the electrically conductive substrate by vacuum brazing or any other suitable means. Also, a continuous CNT fabric can be secured in either tension or compression to maintain a uniform height of the continuous CNT fabric.