公开(公告)号：US11816971B2

公开(公告)日：2023-11-14

申请号：US17291172

申请日：2019-11-13

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Andrew Long ,  Panagiotis D. Stanitsas ,  Jerome Shanko, Jr. ,  Wesley M. Barbee ,  Matthew M. Shettel ,  Matthew Shannon ,  Johnathan R. Graves ,  James W. Howard ,  James B. Snyder ,  James L. C. Werness, Jr. ,  Jason Patterson ,  Ravi Raagav Srinivas ,  Payas Tikotekar

IPC: G08B21/16 ,  G01J5/00 ,  G06F18/24 ,  G06T7/00 ,  G06V20/20 ,  G08B17/06 ,  G08B17/117 ,  G08B17/12 ,  G06F1/24

CPC classification number: G08B21/16 ,  G01J5/00 ,  G06F1/24 ,  G06T7/97 ,  G06V20/20 ,  G08B17/06 ,  G08B17/117 ,  G08B17/12 ,  G01J2005/0077 ,  G06T2207/10048 ,  G06T2207/20084

Abstract: A system, wearable device and management device provided for predicting a flashover event. According to one aspect of the disclosure, a wearable device for predicting a flashover event is provided. The wearable device includes at least one thermal sensor configured to generate thermal data associated with an environment, and processing circuitry configured to: determine a risk of ignition of at least one combustible gas in the environment based on the thermal data, and trigger at least one action based on the determined risk of ignition.

公开(公告)号：US20220336148A1

公开(公告)日：2022-10-20

申请号：US17640877

申请日：2020-09-04

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Darin K. Thompson ,  Matthew M. Shettel ,  David Allen Amero ,  Ivan Mateo Delamer ,  Andrea Dukeshire

IPC: H01F38/02 ,  H02H9/00 ,  A62B7/02 ,  A62B9/02 ,  A62B9/00

Abstract: According to one or more embodiments, a current limiting device is provided. The current limiting device includes a transformer including: a primary winding configured to accept an input current, a core electromagnetically coupled to the primary winding, and a secondary winding electromagnetically coupled to the core. The secondary winding is configured to provide a current limiting energy source based on the input current where the current limiting energy source is limited to a predetermined maximum current based on at least one characteristic of the core.