# US 10,864,473 B2 · Air-filtering protection device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,864,473 B2 - Document ID: US10864473B2 - Status: Granted - Kind: B2 - Application number: 16/036,009 - Filed: 2018-07-16 - Published: 2019-02-14 - Granted: 2020-12-15 - Earliest claimed: 2017-08-08 - Assignees: Microjet Technology Co., Ltd. - Applicants: Microjet Technology Co., Ltd. - Inventors: Hao-Jan Mou; Chi-Feng Huang; Yung-Lung Han; Chang-Yen Tsai; Wei-Ming Lee; Hsuan-Kai Chen - Web page: https://patentgrep.com/patent/US10864473B2 ## CPC - F04B 43/046: {with piezoelectric drive} - A41D 13/11: Protective face masks, e.g. for surgical use, or for use in foul atmospheres (eye-masks A61F9/04 {; hoods affording protection against heat or harmful chemical agents A62B17/04}) - A62B 9/006: {Indicators or warning devices, e.g. of low pressure, contamination} - A62B 23/025: {the filter having substantially the shape of a mask (surgical face masks A41D13/11)} - A62B 23/06: Nose filters - B01D 46/442: {by measuring the concentration of particles} - B01D 2273/30: Means for generating a circulation of a fluid in a filtration system, e.g. using a pump or a fan - F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F) - A41D: OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES - 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) - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) ## Abstract An air-filtering protection device includes a filtering mask and an actuating and sensing device. The filtering mask is adhered to a user's nose for filter air and includes a first coupling element. The actuating and sensing device includes a second coupling element. The second coupling element is engaged with the first coupling element of the filtering mask for allowing the actuating and sensing device to be detachably mounted on the filtering mask. The actuating and sensing device includes at least one senor, at least one actuating device, a microprocessor, a power controller and a data transceiver. The at least one actuating device is disposed on one side of the at least one sensor and includes at least one guiding channel. The actuating device is enabled to transport an air to flow toward the sensor through the guiding channel so as to make the air sensed by the sensor. ## Claims ### Claim 1 An air-filtering protection device, comprising: a filtering mask adapted to be adhered to a user's nose for filtering air and comprising a first coupling element, and the first coupling element has a first air channel running through an inner surface and an outer surface of the filtering mask, and a filtering element is disposed in the first air channel; and an actuating and sensing device comprising a second coupling element engaged with the first coupling element of the filtering mask for allowing the actuating and sensing device to be detachably mounted on the filtering mask, wherein the actuating and sensing device comprises at least one sensor, at least one piezoelectric pump, a microprocessor, a power controller and a data transceiver, wherein the at least one piezoelectric pump is disposed on one side of the at least one sensor and comprises at least one guiding channel, the at least one piezoelectric pump is enabled to transport air to flow toward the at least one sensor through the at least one guiding channel so as to make the air sensed by the at least one sensor; wherein the piezoelectric pump is enabled to transport the air in different flow rates in accordance with an air quality information when the actuating and sensing device is mounted on the filtering mask and the filtering mask is worn by a user, so as to adjust the air inside the filtering mask for maintaining the air quality; wherein the piezoelectric pump comprises: a gas inlet plate having at least one inlet, at least one convergence channel and a central cavity defining a convergence chamber, wherein the at least one inlet allows the air to flow in, and the at least one convergence channel is disposed corresponding to the at least one inlet and guides the air from the at least one inlet toward the convergence chamber defined by the central cavity; a resonance plate having a central aperture and a movable part, wherein the central aperture is aligned with the convergence chamber and the movable part surrounds the central aperture; a piezoelectric actuator aligned with the resonance plate; a first insulation plate; a conducting plate; and a second insulation plate; wherein a gap is formed between the resonance plate and the piezoelectric actuator to define a first chamber, so that the air from the at least one inlet of the gas inlet plate is converged to the central cavity along the at least one convergence channel and flows into the first chamber through the central aperture of the resonance plate when the piezoelectric actuator is enabled, whereby the air is further transferred through a resonance between the piezoelectric actuator and the movable part of the resonance plate. ### Claim 2 (depends on 1) The air-filtering protection device according to claim 1, wherein the filtering mask has a surface made of a filter material. ### Claim 3 (depends on 1) The air-filtering protection device according to claim 1, wherein the filtering mask has a sealing frame adapted to be adhered to the user. ### Claim 4 (depends on 3) The air-filtering protection device according to claim 3, wherein the sealing frame is a soft and flexible member, which is adjustable with a contact area. ### Claim 5 (depends on 3) The air-filtering protection device according to claim 3, wherein the sealing frame is an air bag, which is adjustable with a contact area. ### Claim 6 (depends on 1) The air-filtering protection device according to claim 1, wherein the filtering mask is a mouth mask or a face mask with a filtering element disposed between an inner surface and an outer surface thereof. ### Claim 7 (depends on 1) The air-filtering protection device according to claim 1, wherein the first coupling element of the filtering mask is a fastening element having at least one tenon. ### Claim 8 (depends on 7) The air-filtering protection device according to claim 7, wherein the second coupling element is a fastening element having at least one recess and at least one engaging slot. ### Claim 9 (depends on 1) The air-filtering protection device according to claim 1, wherein the piezoelectric pump is a micro-electro-mechanical system (MEMS) piezoelectric pump. ### Claim 10 (depends on 1) The air-filtering protection device according to claim 1, wherein the piezoelectric actuator comprises: a suspension plate in a square shape, having a first surface, a second surface and a bulge, wherein the suspension plate is permitted to undergo a bending vibration; an outer frame arranged around the suspension plate; at least one bracket connected between the suspension plate and the outer frame for elastically supporting the suspension plate; and a piezoelectric plate, wherein a length of a side of the piezoelectric plate is smaller than or equal to a length of a side of the suspension plate, and the piezoelectric plate is attached on the first surface of the suspension plate, wherein when a voltage is applied to the piezoelectric plate, the suspension plate is driven to undergo the bending vibration; wherein the piezoelectric pump further comprises a conducting plate, a first insulation plate and a second insulation plate, wherein the gas inlet plate, the resonance plate, the piezoelectric actuator, the first insulation plate, the conducting plate and the second insulation plate are sequentially stacked. ### Claim 11 (depends on 1) The air-filtering protection device according to claim 1, wherein the air quality information including the level of pollution, humidity and temperature of the air inside the filtering mask. ### Claim 12 (depends on 11) The air-filtering protection device according to claim 11, wherein the air quality information is the level of pollution of the air inside the filtering mask. ### Claim 13 (depends on 1) The air-filtering protection device according to claim 1, wherein the power controller of the actuating and sensing device comprises a charging element for storing and outputting energy for proving the energy to the sensor and the piezoelectric pump to perform a sensing operation and an actuating operation respectively. ### Claim 14 (depends on 13) The air-filtering protection device according to claim 13, wherein the charging element transfers the energy in a wired or wireless transmission manner. ### Claim 15 (depends on 1) The air-filtering protection device according to claim 1, wherein the microprocessor of the actuating and sensing device computes monitored data generated by the at least one sensor and converts the monitored data into output data, wherein the data transceiver receives the output data and transmits the output data to the connection device, such that information carried by the output data is displayed, stored and transmitted by the connection device. ### Claim 16 (depends on 15) The air-filtering protection device according to claim 15, wherein the connection device is connected with a notification processing system to enable an air quality notification mechanism. ### Claim 17 (depends on 15) The air-filtering protection device according to claim 15, wherein the connection device is connected with a notification processing device to enable an air quality processing mechanism, so as to improve the air quality in the environment. ### Claim 18 An air-filtering protection device, comprising: at least one filtering mask adapted to be adhered to a user's nose for filtering air and comprising at least one first coupling element, and the first coupling element has a first air channel running through an inner surface and an outer surface of the filtering mask, and a filtering element is disposed in the first air channel; and at least one actuating and sensing device comprising at least one second coupling element engaged with the first coupling element of the filtering mask for allowing the actuating and sensing device to be detachably mounted on the filtering mask, wherein the actuating and sensing device comprises at least one sensor, at least one piezoelectric pump, at least one microprocessor, at least one power controller and at least one data transceiver, wherein the at least one piezoelectric pump is disposed on one side of the at least one sensor and comprises at least one guiding channel, the at least one piezoelectric pump is enabled to transport air to flow toward the at least one sensor through the at least one guiding channel so as to make the air sensed by the at least one sensor; wherein the piezoelectric pump is enabled to transport the air in different flow rates in accordance with an air quality information when the actuating and sensing device is mounted on the filtering mask and the filtering mask is worn by a user, so as to adjust the air inside the filtering mask for maintaining the air quality; wherein the piezoelectric pump comprises: a gas inlet plate having at least one inlet, at least one convergence channel and a central cavity defining a convergence chamber, wherein the at least one inlet allows the air to flow in, and the at least one convergence channel is disposed corresponding to the at least one inlet and guides the air from the at least one inlet toward the convergence chamber defined by the central cavity; a resonance plate having a central aperture and a movable part, wherein the central aperture is aligned with the convergence chamber and the movable part surrounds the central aperture; a piezoelectric actuator aligned with the resonance plate; a first insulation plate; a conducting plate; and a second insulation plate; wherein a gap is formed between the resonance plate and the piezoelectric actuator to define a first chamber, so that the air from the at least one inlet of the gas inlet plate is converged to the central cavity along the at least one convergence channel and flows into the first chamber through the central aperture of the resonance plate when the piezoelectric actuator is enabled, whereby the air is further transferred through a resonance between the piezoelectric actuator and the movable part of the resonance plate.