公开(公告)号：US11482859B2

公开(公告)日：2022-10-25

申请号：US17122437

申请日：2020-12-15

Applicant: MSA TECHNOLOGY, LLC

Inventor： Robert Kevin Sexton ,  Mark Flori Zanella, Sr.

IPC: H02J1/06 ,  H02J50/80 ,  G01R19/00 ,  G01R27/02 ,  G06F1/3203

Abstract: A system includes a two-conductor loop in which the loop current or current signal is controlled by a loop current controller to be proportional to a signal output from a sensor. The system further includes energy harvesting circuity in electrical connection with the two-conductor loop which includes a second current controller in parallel electrical connection with the loop current controller and a power converter in electrical connection with the second current controller. The second current controls a portion of current drawn from the two-conductor loop and delivered to the power converter from an output port thereof. The portion of the current drawn from the two-conductor loop is returned to the loop current controller from the energy harvesting circuit. Noise in the portion of the current drawn from the two-conductor loop by the second current controller is controlled by the second current controller to be below a predetermined threshold.

公开(公告)号：US20220260704A1

公开(公告)日：2022-08-18

申请号：US17729665

申请日：2022-04-26

Applicant: MSA Technology, LLC

Inventor： Clinton Sean Fleming ,  Jason Paul Eaton ,  Alec Cantor

IPC: G01S13/89 ,  H01Q21/20 ,  H04B10/112 ,  H01Q3/26

Abstract: Provided are computer-implemented systems and methods for a device that includes at least one processor programmed or configured to receive one or more messages from a device in an transmit state, the one or more messages comprising a first message received at a first power level, the first message comprising data associated with a power level at which the first message was transmitted by the transmitting device, and a second messages received at a second power level, the second message comprising data associated with a power level at which the second message was transmitted by the transmitting device. The processor is further configured to determine a heading toward the transmitting device based on the first message and the second message; and output data associated with an indication of the heading toward the transmitting device.

公开(公告)号：US20210393997A1

公开(公告)日：2021-12-23

申请号：US17347625

申请日：2021-06-15

Applicant: MSA Technology, LLC

Inventor： Aaron Tyler Jewitt ,  Kayleigh Nichelle Westbrook ,  Adam Bilger

IPC: A62B23/02 ,  A62B18/08 ,  A62B18/02

Abstract: A respirator mask includes a face piece configured for contacting at least a portion of a face of a user, a head harness for attaching the respirator mask to a head of the user, at least one opening on the face piece, and at least one filter associated with the opening on the face piece. The at least one filter is configured to facilitate a passage of ambient air to an interior of the face piece in a first direction. The at least one filter is further configured to facilitate a passage of air exhaled by the user wearing the respirator mask in a second direction opposite the first direction from the interior of the face piece to the ambient air and reduce a passage of aerosolized particulate matter exhaled by the user in the second direction.

公开(公告)号：US11143588B1

公开(公告)日：2021-10-12

申请号：US16835826

申请日：2020-03-31

Applicant: MSA Technology, LLC

Inventor： Regis J. Nero, Jr. ,  David M. Gherardi

IPC: G01N21/35 ,  G01N21/3504 ,  H01J61/16 ,  G01N21/31

Abstract: An open path gas detector for detecting the presence of a target gas in the presence of fog or water vapor. A transmitter transmits flashes of optical energy along a path in an area under surveillance, including energy at a sample wavelength region at which the target gas is absorbed, at a reference wavelength region not significantly absorbed by the target gas, and at a synchronization wavelength region different from the first and second wavelengths. A receiver includes a sample channel responsive to the optical energy at the sample wavelength region, a reference channel responsive to optical energy at the reference wavelength region, and a third synchronization channel responsive to the optical energy at the synchronization wavelength region. The receiver detects the target gas and synchronizes operation of the receiver to the transmitter flashes of optical energy using the output of the synchronization channel.

公开(公告)号：USD927860S1

公开(公告)日：2021-08-17

申请号：US29700864

申请日：2019-08-06

Applicant: MSA Technology, LLC

Designer： Matthew Frederick Jacob ,  Benjamin T. Sepe ,  Grant Monn Myers

公开(公告)号：US20210181171A1

公开(公告)日：2021-06-17

申请号：US17188297

申请日：2021-03-01

Applicant: MSA TECHNOLOGY, LLC

Inventor： Mark Flori Zanella, SR. ,  Michael Alvin Brown ,  Meghan E. Swanson ,  Daniel D. Santoro, JR. ,  Jeff Audia ,  Ryan Alan Sherry

IPC: G01N33/00 ,  G01N27/16

Abstract: A combustible gas sensor for detecting an analyte gas includes a first element including a first electric heating element, a first support structure on the first electric heating element and a first catalyst supported on the first support structure and electronic circuitry in electrical connection with the first element. The electronic circuitry is configured to provide energy to the first element to heat the first element to at least a first temperature at which the first catalyst catalyzes combustion of the analyte gas and to determine if the analyte gas is present based on a response of the first element to being heated to at least the first temperature. The electronic circuitry is further configured to apply an interrogation pulse to the first element in which energy to the first element is increased or decreased to induce an associated response from the first element.

公开(公告)号：US10912344B2

公开(公告)日：2021-02-09

申请号：US16207842

申请日：2018-12-03

Applicant: MSA Technology, LLC

Inventor： Alexa Danielle Bohn ,  Robert Edward Klotz ,  Daniel Martin Hehman

IPC: A42B3/18 ,  A42B3/04 ,  A42B3/16 ,  A42B3/22

Abstract: A protective helmet has an outer shell configured for surrounding a head of a user and at least one accessory attachment rail connected to the outer shell. The accessory attachment rail has a body having a front end, a rear end, and one or more slots between the front end and the rear end. Each of the one or more slots is configured for removably receiving at least one helmet accessory. A locking mechanism is associated with each of the one or more slots for automatically locking the at least one helmet accessory in the one or more slots upon insertion of the at least one helmet accessory within the one or more slots and for preventing removal of the at least one helmet accessory from the one or more slots. At least one connection element is provided for connecting the accessory attachment rail to the outer shell.

公开(公告)号：US10897133B2

公开(公告)日：2021-01-19

申请号：US16518942

申请日：2019-07-22

Applicant: MSA TECHNOLOGY, LLC

Inventor： Robert Kevin Sexton ,  Mark Flori Zanella, Sr.

IPC: H02J1/06 ,  H02J50/80 ,  G01R19/00 ,  G01R27/02 ,  G06F1/3203

Abstract: A system includes a two-conductor loop in which the loop current or current signal is controlled by a loop current controller to be proportional to a signal output from a sensor. The system further includes energy harvesting circuitry in electrical connection with the two-conductor loop which includes a second current controller in parallel electrical connection with the loop current controller and a power converter in electrical connection with the second current controller. The second current controls a portion of current drawn from the two-conductor loop and delivered to the power converter from an output port thereof. The portion of the current drawn from the two-conductor loop is returned to the loop current controller from the energy harvesting circuit. Noise in the portion of the current drawn from the two-conductor loop by the second current controller is controlled by the second current controller to be below a predetermined threshold.

公开(公告)号：US20200376307A1

公开(公告)日：2020-12-03

申请号：US16995216

申请日：2020-08-17

Applicant: MSA Technology, LLC

Inventor： Kaustubh Misra ,  Michael F. Becker ,  Henry A. Fonzi, III ,  David E. Garrett

IPC: A62B9/00 ,  A62B7/02 ,  A62B18/02 ,  G01J5/10 ,  G01J5/02 ,  H04N5/33 ,  H04N5/225 ,  A62B7/04

Abstract: An improved safety device for a self-contained breathing apparatus, and an improved self-contained breathing apparatus having thermal imaging capabilities.

公开(公告)号：US10788458B2

公开(公告)日：2020-09-29

申请号：US15394566

申请日：2016-12-29

Applicant: MSA TECHNOLOGY, LLC

Inventor： Jerin Miller ,  Ryan Alan Sherry ,  Robert Kevin Sexton ,  Robert Eric Uber

IPC: G01N29/04 ,  G01N29/07 ,  G01N29/34 ,  G01N29/11 ,  G01N33/00 ,  G01N21/17

Abstract: A method of detecting at least a partial blockage in a porous member separating an inner chamber of a device having a gas sensor responsive to an analyte positioned within the inner chamber and an ambient environment includes emitting pressure waves within the inner chamber and measuring a change in phase of a response via a sensor responsive to pressure waves.