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United States of America As Represented by the Secretary of the Air Force

Advanced Animal Diagnostics, Inc.

Christopher G Paul

Stephen G Miggels

Jasper N Pollard

Demetris Young

David Alan Calderwood

Rodolfo R Rodriguez

Henry J Mack, Jr

Joy Parr Drach

Mitchell Hockett

Brandon J Arritt

Randall Marcuson

Sample collection device assembly

A structure has an inner, load bearing member and a surrounding, concentric over-wrap. The inner member is composed of a carbon composite and the over-wrap is composed of a non-carbon composite. The inner member has a negative coefficient of thermal expansion and the over-wrap has a positive coefficient of thermal expansion that is an order of magnitude greater than that of the inner member. When subjected to cryogenic temperatures, the over-wrap will shrink and apply a compressive force against the inner member, to resist the creation of microcracks in the inner member.

Fiber composite over-wrap for a cryogenic structure

A waste-oil cleaning apparatus includes a processing tank for holding waste-oil, and arranged such that non-oil liquids in the waste-oil settle in the base of the tank. A conduit and valve arrangement is provided for withdrawing the settled non-oil liquids from the base of the tank. The apparatus also incorporates an oil cleaning unit including a pump, a mesh filter and a centrifuge. Waste oil in the tank is cleaned by pumping oil out of the tank and passing the oil sequentially through the mesh filter and the centrifuge after the settled non-oil liquids are withdrawn from the base of the tank.

Waste-oil cleaning apparatus

A waste-oil cleaning method includes filling a processing tank with waste oil, allowing non-oil liquids in the waste-oil to settle to the base of the tank, then withdrawing the settled non-oil liquids from the base of the tank. After these non-oil liquids are withdrawn, the remaining partially cleaned oil is cleaned by pumping oil out of the tank and passing the oil sequentially through a mesh filter and a centrifuge.

Waste-oil cleaning method and apparatus

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Fairbanks, AK, United States of America

Christopher G Paul