US 12,259,306 B2
Sensor head assembly for a measurement system
Modest Adam Reszewicz, Dolnoslaskie (PL); Adrian Tarnowski, Dolnośla̧skie (PL); Mark P. Fazzio, Wilson, NC (US); Emil F. Baran, Jr., Sims, NC (US); and James Varnell, Black Creek, NC (US)
Assigned to KIDDE TECHNOLOGIES, INC., Wilson, NC (US)
Filed by Kidde Technologies, Inc., Wilson, NC (US)
Filed on May 10, 2021, as Appl. No. 17/315,824.
Claims priority of application No. 433841 (PL), filed on May 8, 2020.
Prior Publication US 2021/0349000 A1, Nov. 11, 2021
Int. Cl. G01N 15/06 (2024.01); G01N 15/075 (2024.01)
CPC G01N 15/06 (2013.01) [G01N 15/075 (2024.01)] 13 Claims
OG exemplary drawing
 
1. A sensor head assembly for a measurement system for powderised agent comprising:
an elongate body having a distal end and a proximal end configured to receive a fibre optic cable;
a sensing chamber provided within the elongate body;
a first window provided at a proximal side of the sensing chamber and a second window provided at a distal end of the sensing chamber;
a concave mirror mounted within the elongate body at a distal side of the second window, wherein the concave mirror is mounted such that its axial position within the elongate body is adjustable; and
a biasing member that is a coil spring or a wave spring;
wherein the biasing member is provided between the sensing chamber and the second window such that it biases the second window and the concave mirror away from the sensing chamber.