Patent ID: 11953423
Assignee: OAK ANALYTICS INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. A method comprising:
shaping a body cavity according to a first tubular shape in a body to accommodate a chamber, the body having a first body end and a second body end aligned with a center axis, the chamber having a second tubular shape, a first chamber end and a second chamber end;
positioning a glass window at an entry port at the first body end in alignment with the center axis;
retaining the first chamber end by disposing a shoulder on the glass window;
holding an analyte in the body cavity; and
mating a cap with a cap receptacle at the second body end to secure the second chamber end, wherein mating comprises:
mounting a reflection mirror on a mirror carrier positioned through the center axis to return an optical signal back toward the glass window,
holding the second chamber end with a centering ring to keep the chamber in place, and
sealing the cap and the cap receptacle with a sealing gasket when the cap is tightened to seal the body;
inserting the chamber into the body cavity filled with the analyte,
spacing the reflection mirror from a surface of the chamber at the second chamber end by a gap after the chamber is fully inserted into the body cavity and prior to tightening the cap, and
tightening the cap to seal the body so that the reflection mirror is in contact with the surface.