公开(公告)号：US20210106854A1

公开(公告)日：2021-04-15

申请号：US16965055

申请日：2018-02-14

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Jennifer SHEN ,  Mark HUA ,  Kevin LU ,  Bruce LIU ,  Wei SUN

IPC: A62B27/00 ,  A62B18/08 ,  A62B9/00 ,  A62B18/02 ,  A62B7/10

Abstract: Embodiments include systems and methods for completing a fit test on a respiratory mask A method may comprise installing a speaker within an interior cavity of the face mask, wherein the speaker communicates with an electronics unit; installing a microphone within the interior cavity of the face mask, wherein the microphone communicates with the electronics unit; generating, by the speaker, a sound during the fit test; detecting, by the microphone, sound generated by the speaker during the fit test; comparing, by the electronics unit, a detected signal from the microphone to a baseline expected sound; when the detected signal is within a certain range of the baseline expected sound, indicating to the user that the fit test is completed and passed; and when the detected signal is not within a certain range of the baseline expected sound, indicating to the user that the fit test is completed and failed.

公开(公告)号：US20180028847A1

公开(公告)日：2018-02-01

申请号：US15550407

申请日：2015-02-13

Applicant: Bruce LIU ,  Terry ZHAO ,  Kevin LU ,  Devin LI ,  Honeywell International Inc.

Inventor： Bruce LIU ,  Terry ZHAO ,  Kevin LU ,  Devin LI

IPC: A62B25/00 ,  A62B9/04

CPC classification number: A62B25/00 ,  A62B7/02 ,  A62B9/04

Abstract: Embodiments relate generally to a self-contained breathing apparatus (SCBA comprising a waist pad bumper system. The waist pad bumper system may comprise a soft rubber gasket located between the waist pad and the backplate of the SCBA, operable to compress to cushion the movement of the backplate with respect to the waist pad; a hard rubber gasket located between the waist pad and the backplate operable to compress to cushion the movement of the backplate with respect to the waist pad; one or more magnets located on the waist pad; and one or more magnets located on the backplate operable to interact with the one or more magnets located on the waist pad, wherein the magnets of the waist pad have the same polarization as the magnets of the backplate and therefore repel each other.