System and method to maintain vacuum, or to selectively exclude/admit electromagnetic energy

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12140125
APP PUB NO 20220003222A1
SERIAL NO

17361505

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A conduit is placed between a vacuum system and the open air or other gaseous environment. A laser or other excitation source is used to ionize the air on the air-side of the conduit. An axial applied electric field is used to repel positive ions from traversing the tube and reaching the region of the vacuum. Electrons are collected in the vacuum region and disposed of using a Faraday cup. The repelled ions assist in creating a counter pressure to sweep neutral atoms out of the tube and back into the ambient air. As a result, a hollow tube can connect an evacuated volume to the open air without compromising the vacuum. This is a “windowless window.” An array of such tubes can be assembled together to increase the area of the aperture.

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Patent Owner(s)

Patent OwnerAddress
RAYTHEON COMPANY870 WINTER STREET WALTHAM MA 02451

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Frazier, Gary A Garland, US 83 1051
Trent, Catherine Allen, US 20 36

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