A mask device includes a mask body including a front cover to form an outer appearance of the mask body, a frame coupled to the front cover, the frame located in front of a user's nose and mouth when the mask device is worn by the user, the frame including at least one inlet and at least one outlet located below the inlet, and a partition plate between the frame and the front cover, the partition plate forming an upper space and a lower space in the mask body. A first air cleaner is coupled to one side of the mask body and a second air cleaner is coupled to an other side of the mask body, where the first air cleaner and the second air cleaner filters outside air sucked in from an outside environment and supplies the filtered air to the mask body. The upper space of the mask body is in communication with the first air cleaner, the second air cleaner, and the at least one inlet, and the lower space of the mask body is in communication with the at least one outlet.

A respiratory mask includes a mask fabric body made of a woven fabric having weft yarns and warp yarns, said fabric yarns comprising at least one yarn selected from yarns of a plastically bendable material and elastic yarns or threads.

A ventilated cooling and protective garment including a hood portion (31) with a facial opening (14) surrounded by a facial peripheral ring (13) and a complete or partial body portion (32, 33), and a facial shield (10) comprising a transparent shield (11) and a facial peripheral connector (12) supporting and air-tightly attaching the transparent shield (11) to the facial peripheral ring (13) around the facial opening (14), wherein the facial peripheral ring (13) is pulled against the head of the user by the facial shield support (20) and include spacers (13a, 13b) to provide a permeable close non-air-tight fitting between the facial peripheral ring (13) and the head of the used, and an air inlet (A1) is included in the complete or partial body portion (32, 33) and at least a portion of an air outlet (A2) is included in the facial shield (11), or vice versa.

A slide-on, slide-off frame is disclosed that carries a medical face mask of the kind to be worn by healthcare providers and others who wish to avoid contracting or spreading an infectious disease, such as the coronavirus known as COVID-19. The frame includes a bridge to which the face mask is attached. A pair of L-shaped ear engaging arms stand upwardly from opposite ends of the bridge to lie on top of the wearer's ears to hold the frame on the wearer's face. In one embodiment, the upstanding ear engaging arms are rotatable downwardly into the plane of the bridge so that the frame can be carried in a purse or hand bag. In another embodiment, the frame is manufactured from a single continuous piece of material, such that the face mask is slidable off the bridge and removed from the frame.

A patient interface is configured to deliver breathable gas to a patient. The patient interface includes a cushion configured to form a seal with the patient's face and a frame with an elongated body comprising a central bore and a circumferential channel. The circumferential channel is configured to receive a rim of the cushion. Headgear is attachable to the frame and is configured to support the cushion and the frame on the patient's head. The headgear includes a left rigidizer attached to a left front strap and a right rigidizer attached to a right front strap. The left and right rigidizers are arranged to have different flexibilities in different directions so that a stiffness of the left and right rigidizers in a first direction resist a vertical rotation of the patient interface.

There is provided an ear cup comprising a housing, an ear pad attached to the housing and arranged such that the housing and the ear pad together define a cavity having an opening, and an acoustic driver disposed within the cavity. The ear cup further comprises a feedforward microphone, a feedback microphone, and active noise control (ANC) circuitry. The active noise control (ANC) circuitry is configured to use a feedforward signal provided by the feedforward microphone to operate the acoustic driver to attenuate noise having frequencies within a feedforward ANC range having a lower limit of no less than 300 Hz and an upper limit of more than 1.5 kHz and to use a feedback signal provided by the feedback microphone to operate the acoustic driver to attenuate noise having frequencies within a feedback ANC range having an upper limit of no more than 1.5 kHz.

Provided are a breathing isolation mask and a breathing assistance system, the breathing isolation mask comprising an isolation mask body, a first gas non-return mechanism, a strap set and a first gas channel, the isolation mask body being provided with an inhalation port and an exhalation port, the inhalation port and the exhalation port being independent from one another or being the same port, the strap set at least comprising two straps, the two straps being respectively connected to two sides of the isolation mask body, the first gas channel extending towards two sides of the isolation mask body, the first gas channel being at least partially connected to at least one of the two straps, one end of the first gas channel at least extending to the inhalation port of the isolation mask body, the first gas non-return mechanism being mounted on the exhalation port or the first gas channel, the first gas non-return mechanism being configured to allow gas to unidirectionally exit the isolation mask from the exhalation port or via the first gas channel. The first gas channel is not suspended below the isolation mask, and when connected to the strap set, is not prone to swaying, or interfering with daily activities of a user.

Masks having embedded electronic devices to allows for contactless payment for goods and services in an appropriate socially distanced manner.

A face shield assembly with positive pressure airflow comprises a head band, a transparent face shield, a foam spacer, and at least one airflow supply unit providing a positive pressure airflow. The head band attaches the face shield outward and the foam spacer inward. The airflow supply unit has hose(s) to connect the holes distributed in the foam spacer, consequently bring forth airflow on the front of the user's face to prevent the droplets and particles from being inhaled into the user's nose and mouth.

The present disclosure provides a face shield that includes a frame supported by a head of the wearer and a transparent visor removably coupled to the frame. When coupled to the frame, the visor extends around the face of the wearer such that the visor covers at least one of a mouth, a nose, and eyes of the wearer. The face shield further includes an ion generator coupled to the frame. The ion generator generates and emits negatively-charged ions in a region of ambient air surrounding the mouth or the nose of the wearer such that negatively-charged ions charge particulate matter suspended in the region of ambient air. The face shield includes a positively- or negatively charged or grounded trap that collects or deflects the negatively-charged ions and the particulate matter charged by the negatively-charged ions.