National Technology & Engineering Solutions of Sandia, LLC

Mayo Foundation for Medical Education and Research

Todd Andrew Barrick

Eric A Shaner

Bradley C Salzbrenner

Thomas John Rogers

Lorenzo Jiron

Daniel L Stick

Lambert Paul Parazzoli

Jonathan David Sterk

Zachary Medaris Wilson

Edward G Winrow

Brian Mcfarland

Ryan J Law

Victor H Chavez

Jeffrey D Hunker

Dora K Wiemann

Katherine Anne Barrick

Devyani Lal

Mark B Wehde

John M Angeli

Michael Alexis Omana

A compact convertible single pass (SP)/double pass (DP) optical system is disclosed. The convertible optical system is convertible in the sense that the optical system can be configured to have any one of multiple configurations, including SP/DP, DP/SP, just SP, or just DP. This flexibility in the configuration is made possible by a compact baseplate with various predefined mounting points for the various optical elements required for the different configurations. Further, there is significant commonality among the optical elements required to implement the various configurations. For this reason, if one is cost constrained, one can start with the compact baseplate and populate it with the optical elements required for either the SP or DP configuration and later add the optical elements required to create the SP/DP or DP/SP configuration as funding permits.

Compact convertible universal single pass/double pass optical system

A reusable, protective face mask has two detachable filter trays that attach on each side of the mask, a soft elastomeric face seal, and straps to go around the user's head. Exhalations and inhalations can pass through the same filter material. The filter trays can accept arbitrary filter media. A forward-facing port can be used to increase speech intelligibility by transmitting sound through a diaphragm without a prohibitive amount of distortion. Manufacture of the mask is facilitated because the mask body and the other mask components can be produced by injection molding. Decontamination and sterilization are facilitated because the mask can be fully disassembled.

Reusable filtering face mask

A test fixture facilitates non-destructive testing of a protective mask. The test fixture includes a mock facial structure, a clamping form that makes a seal around at least part of the facial structure, and can employ the retaining straps of the protective mask to a make a seal around at least part of the facial structure. In use, the protective mask is tested in situ on the facial structure. In some examples, the clamping form has a negative contour of the mock facial structure or of the outer surface of a protective mask that is to be tested. The testing can include repetitive testing of the fit, structural components (e.g., ultrasonic welds and straps), and the degradation of materials as a function of donning/doffing or environmental factors (e.g., temperature and humidity).

Respirator test system

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Bosque Farms, NM, United States of America

Todd Andrew Barrick