US 12,268,905 B2
SCBA facemask assembly with accelerometer to extend battery life of electrical components
Darin K. Thompson, Huntersville, NC (US); and Ivan M. Delamer, Calgary (CA)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US)
Appl. No. 17/283,334
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed Oct. 7, 2019, PCT No. PCT/IB2019/058533
§ 371(c)(1), (2) Date Apr. 7, 2021,
PCT Pub. No. WO2020/075045, PCT Pub. Date Apr. 16, 2020.
Claims priority of provisional application 61/745,154, filed on Oct. 12, 2018.
Prior Publication US 2022/0001219 A1, Jan. 6, 2022
Int. Cl. A62B 18/08 (2006.01); A62B 7/02 (2006.01); A62B 9/00 (2006.01); A62B 9/02 (2006.01); A62B 18/04 (2006.01)
CPC A62B 18/08 (2013.01) [A62B 7/02 (2013.01); A62B 9/006 (2013.01); A62B 9/022 (2013.01); A62B 18/04 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A self-contained breathing apparatus facemask assembly comprising:
a) a facemask configured to be worn by a user, the facemask defining an interior region adjacent the user's face when the facemask is donned by the user;
b) an electronic device connected with the facemask;
c) an accelerometer configured to detect motion of the facemask;
d) a microcontroller coupled with the accelerometer and configured to send signals to the electronic device in response to the motion detected by the accelerometer; and
e) a battery configured to supply power to the electronic device;
wherein when the motion is detected by the accelerometer, a signal is transmitted to the microcontroller and the microcontroller interprets the signal to selectively adjust the power level supplied to the electronic device;
wherein the microcontroller is configured to differentiate between motion of the facemask assembly created by motion of the user and motion created by a vehicle.