US Patent Issued to Massachusetts Institute of Technology on June 30 for "Methods and apparatus for passive, proportional, valveless gas sampling and delivery" (Massachusetts, Colorado Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,667,275, issued on June 30, was assigned to Massachusetts Institute of Technology (Cambridge, Mass.).

"Methods and apparatus for passive, proportional, valveless gas sampling and delivery" was invented by Kyle Thompson (Boulder, Colo.), Gary A Shaw (Westford, Mass.), Andrew M Siegel (Arlington, Mass.) and Lawrence M Candell (Arlington, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fluid dynamic valve passively allows fluid flow out of a moving stream in one flow direction and not in the reverse. This allows the collection of fluid from a single direction of an AC fluid flow. The siphoned portion of the flow has a flow rate proportional to the m...