公开(公告)号：US20240073665A1

公开(公告)日：2024-02-29

申请号：US18258257

申请日：2021-12-20

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Jason A. Graves ,  Benjamin W. Watson ,  John C. Wright ,  Parfes Mohammed ,  Henning T. Urban ,  Abel Gladstone Mangam ,  Christopher P. Henderson ,  Darin K. Thompson ,  Britton G. Billingsley

IPC: H04W4/80

CPC classification number: H04W4/80

Abstract: The present disclosure relates to a short-range communication device (10, 10′, 5 10″) for a personal protective equipment or a personal protective device (200, 210, 220, 230) comprising a transmission unit (20, 20′, 20″) for wirelessly transmitting a voice signal of a user (100, 110, 120, 130, 140, 150, 160) to a receiving unit (40,40′, 40″) over a predetermined distance such that a communication channel is established between the transmission unit (20, 20′, 20″) and the receiving unit (40, 40′, 40″) so that a user (100, 10 110, 120, 130, 140, 150, 160) can hear the voice signal. The present disclosure further relates to a short-range communication system comprising at least two short-range communication devices (10, 10′, 10″) according to the present disclosure and to a method of establishing a short-range communication between such devices (10, 10′, 10″). The short-range communication device (10, 10′, 10″) provides for a communication system 15 for the use with personal protective equipment or personal protective devices (200, 210, 220, 230) with an easy and reliable communication and avoids or minimizes the risk of muffled speech of users wearing a personal protective device (200) such as a respirator (200).