# US 10,441,828 B2 · Powered air-purifying respirator > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,441,828 B2 - Document ID: US10441828B2 - Status: Granted - Kind: B2 - Application number: 15/091,145 - Filed: 2016-04-05 - Published: 2016-07-28 - Granted: 2019-10-15 - Earliest claimed: 2010-03-17 - Assignees: 3M Innovative Properties Company - Applicants: 3M Innovative Properties Company - Inventors: Desmond T. Curran; Andrew Murphy; Garry J. Walker; Terence M. Sayers; Christopher P. Henderson; Bengt Kallman - Web page: https://patentgrep.com/patent/US10441828B2 ## CPC - A62B 9/006: {Indicators or warning devices, e.g. of low pressure, contamination} - A62B 7/10: with filter elements - A62B 18/045: {with fans for delivering air for breathing mounted in or on the helmet} - A62B 23/02: for respirators - A62B 18/006: {with pumps for forced ventilation (A62B18/045 takes precedence)} - A62B: DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING (valves specially adapted for medical use A61M39/00; life-saving devices, apparatus or methods specially adapted for use in water B63C9/00; divers' equipment B63C11/00; specially adopted for use with aircraft, e.g. parachutes, ejector seats, {B64D17/00, B64D25/10}; rescue devices peculiar to mining E21F11/00) ## Abstract A powered air purifying respirator (PAPR) for delivering a forced flow of filtered air to a wearer is disclosed. The PAPR comprises a turbo unit with turbo unit components including a fan, an electric motor, and an electronic control unit having a wireless electronic control transceiver, the fan being driven by the electric motor under the control of the electronic control unit and the electronic control unit being configured to send and receive information via the electronic control transceiver; a turbo unit power source that provides power to the turbo unit components; a turbo remote control unit having a wireless turbo remote control transceiver; at least one turbo status indicator unit, adapted to indicate a current operating status of the turbo unit and/or turbo unit components, having a wireless turbo status transceiver; wherein at least one of the turbo remote control unit and turbo status indicator unit is remote from the turbo unit, and wherein at least two of the electronic control transceiver, the turbo remote control transceiver and the turbo status transceiver are in wireless communication with each other. ## Claims ### Claim 1 A powered air purifying respirator for delivering a forced flow of filtered air to a wearer, comprising: a turbo unit with turbo unit components including a fan, an electric motor, and an electronic control unit having a wireless electronic control transceiver, the fan being driven by the electric motor under control of the electronic control unit and the electronic control unit being configured to send and receive information via the electronic control transceiver; a turbo unit power source that provides power to the turbo unit components; a turbo remote control unit having a wireless turbo remote control transceiver; at least one turbo status indicator unit, adapted to indicate a current operating status of the turbo unit and/or turbo unit components, having a wireless turbo status transceiver; wherein at least one of the turbo remote control unit and turbo status indicator unit is remote from the turbo unit, and wherein wireless communication occurs between at least two of the electronic control transceiver, the turbo remote control transceiver and the turbo status transceiver. ### Claim 2 (depends on 1) A powered air purifying respirator according to claim 1, wherein the electronic control transceiver, the turbo remote control transceiver and the turbo status transceiver are arranged as a closed loop network. ### Claim 3 (depends on 1) A powered air purifying respirator according to claim 1, wherein wireless communication between the transceivers is in the range 20 to 50 kHz. ### Claim 4 (depends on 1) A powered air purifying respirator according to claim 1, wherein wireless communication between the transceivers is in the range 100 to 500 THz. ### Claim 5 (depends on 1) A powered air purifying respirator according to claim 1, wherein wireless communication between the transceivers is in the range 0.3 to 10 GHz. ### Claim 6 (depends on 5) A powered air purifying respirator according to claim 5, wherein information is transmitted in a frequency band centred around 868 MHz, 915 MHz, 2.45 GHz or 5.8 GHz. ### Claim 7 (depends on 1) A powered air purifying respirator according to claim 1, wherein the turbo remote control unit and the turbo status indicator unit are adapted to be used by a wearer of the powered air purifying respirator. ### Claim 8 (depends on 6) A powered air purifying respirator according to claim 6, wherein the turbo remote control unit and the turbo status indicator unit are adapted to be remote from a wearer of the powered air purifying respirator. ### Claim 9 (depends on 1) A powered air purifying respirator according to claim 1, wherein the current operating status of the turbo unit is indicated by at least one of a visual indicator, an audible indicator and a vibration indicator. ### Claim 10 (depends on 1) A powered air purifying respirator according claim 1, wherein at least one turbo status indicator unit and the turbo remote control unit are located in a single housing. ### Claim 11 (depends on 1) A powered air purifying respirator according claim 1, wherein the turbo unit further comprises a housing in which the turbo unit components are housed, having external data inputs and one or more additional turbo status indicators provided thereon.