Class / Patent application number | Description | Number of patent applications / Date published |
128206150 | With gas flow control valve | 21 |
20090235934 | FILTERING FACE-PIECE RESPIRATOR HAVING AN INTEGRALLY-JOINED EXHALATION VALVE - A filtering face-piece respirator that has a harness and a mask body where the mask body includes a filtering structure and a support structure. An exhalation valve is attached to the mask body and includes a valve seat that is integral to the mask body. The present invention is beneficial in that it eliminates the need to separately manufacture some or all of the non-dynamic parts of the exhalation valve. There also is no need to subsequently attach the valve seat to the mask body. | 09-24-2009 |
20090283096 | PROTECTIVE MASK AGAINST BIOLOGICAL AGENTS MADE OF TWO PARTS - The invention refers to a personal protective equipment for the respiration that is made up of an upper ( | 11-19-2009 |
20100071699 | AIR FILTRATION APPARATUS AND METHOD - An air filtration apparatus is disclosed. During inhale response, user's breath opens a first air valve causing air flow through replaceable filter through a chamber to a mouth piece disposed in a user's mouth. During exhale response, user's breath closes first valve causing one or more exhaust valves to open. In one embodiment, inhale and exhale responses are displaced from one another to provide better isolation of replaceable filter. | 03-25-2010 |
20100199995 | LOW PROFILE FILTER RESPIRATOR - A respiratory protective device in which a face piece ( | 08-12-2010 |
20100263673 | RESPIRATORY HALF-MASK - The invention relates to a respiratory half mask with side straps ( | 10-21-2010 |
20100269831 | Breathing Mask - A breathing mask ( | 10-28-2010 |
20100282263 | PORTABLE INTAKE AIR STERILIZING APPARATUS - There is provided a portable intake air sterilizing apparatus which allows prevention of a worker's infection with virus/bacteria and which allows, at the same time, the worker to work comfortably. The apparatus includes a cover member C for covering one or both of the nose and the mouth, an air intake portion K for the inner space of the cover member C, and a chlorine dioxide slow-release portion J capable of releasing chlorine dioxide gas into an intake air in association with introduction of this intake air from the air intake portion K. | 11-11-2010 |
20110011404 | FILTRATION MASK - A filtration mask has a collapsible air guide and two filter supports connected at a hinge. The filter supports are movable between a storage position and a deployment position in which the angle between the filter supports being less in the deployment position than in the storage position. In an aspect of this invention, the filter support each have a recess at the hinging edge, and an exhale valve communicating with the air guide is mounted in the recess. In another aspect the exhale valve is connected to the filter supports by a flexible membrane. In a third aspect the air guide is formed by hinged panels. | 01-20-2011 |
20110030691 | AIR FILTRATION APPARATUS AND METHOD - An air filtration apparatus is disclosed. During inhale response, user's breath opens a first air valve causing air flow through replaceable filter through a chamber to a mouth piece disposed in a user's mouth. During exhale response, user's breath closes first valve causing one or more exhaust valves to open. In one embodiment, inhale and exhale responses are displaced from one another to provide better isolation of replaceable filter. | 02-10-2011 |
20110139158 | UNIDIRECTIONAL VALVES AND FILTERING FACE MASKS COMPRISING UNIDIRECTIONAL VALVES - A unidirectional valve for use with a filtering face mask. The valve can include a flap, and a valve seat. The flap can be cantilevered and can flex away from a seal surface of the valve seat to an open position. The valve can further include a housing that at least partially covers the valve seat and the flap. In some embodiments, the height of the housing is no greater than about 1.25 cm, while the distance between the flap and the seal surface when the flap is in the open position is at least 0.35 cm. A projection can be coupled to an inner surface of the housing, and the height of the projection can generally decrease toward the front of the housing. In some embodiments, the projection can have a profile that substantially follows the profile of the flap when the flap is in the open position. | 06-16-2011 |
20120042878 | MASK COVER ASSEMBLY - Disclosed is a mask cover assembly wherein a mask cover body is separably assembled with an exhaust valve and a mask main body, which enables replacement of the aforementioned elements. The mask main body has a semi-spherical cap form and is provided throughout the rim of an inner surface thereof with a face contact cushion member formed by pressing cotton or gauze to have a constant thickness. The mask cover body is configured to enclose the mask main body and is integrally formed at opposite lateral positions thereof with band hanger portions. The exhaust valve body is coupled to an exhaust valve mount of the mask cover body. An exhaust valve cap, an outer filter and a thin rubber plate are axially inserted into the exhaust valve body. Additionally, a coupling member is secured to the mask main body with an inner filter interposed therebetween. | 02-23-2012 |
20120090615 | Separably assembled filtering respirator - A filtering respirator includes a main body, a nonwoven fabric lining removably spread in the main body, and an exhalation valve assembled from a front seat, a diaphragm, a middle seat, and a rear seat. The front seat is located in front of the main body; and the diaphragm, the middle seat and the rear seat are sequentially disposed in the nonwoven fabric lining. The middle seat has a front sleeve portion extended through front central openings on the main body and the nonwoven fabric lining to tightly fit in the front seat; and the rear seat is screwed to a rear sleeve portion of the middle seat. Therefore, the exhalation valve can be easily disassembled from the main body to allow replacement of the nonwoven fabric lining while the main body and the components of the exhalation valve can be repeatedly used to meet ecological and economical requirements. | 04-19-2012 |
20120167890 | RESPIRATOR HAVING VALVE WITH AN ABLATED FLAP - A respirator | 07-05-2012 |
20120204877 | ANTISEPTIC MASK AND METHOD OF USING ANTISEPTIC MASK - The invention is an antiseptic mask, comprising a canister configured to store an antiseptic agent, one or more filters adapted to receive the antiseptic agent and a housing comprising a passageway from an air intake through the one or more filters and to a nose/mouth port. Further, the present invention describes an antiseptic mask and method for treating breathable air contaminated with pathogens through a facial mask filter system using an antiseptic agent to be distributed to a filter through which the air may pass. | 08-16-2012 |
20120247474 | FACE MASK APPARATUS AND SYSTEM - A mask-type apparatus facilitates air filtration. In accordance with one or more embodiments, a mask includes a shell and a filter coupled to the shell. The shell secures the filter to a user's face, with the filter being between the shell and the user. In some implementations, the filter and shell are secured to one another via a valve that passes air between a user and an environment. With these approaches, the mask-type apparatus readily facilitates replacement of the filter while also providing a secure fitment of the filter to a user's face, for a variety of applications. | 10-04-2012 |
20130087151 | FULL FACE MASK FOR A PAPR - A full face mask ( | 04-11-2013 |
20140076325 | DIRECTIONAL VALVE AND RESPIRATOR PRODUCT WITH A DIRECTIONAL VALVE - A directional valve for a respirator product includes a valve housing ( | 03-20-2014 |
20150107596 | RESPIRATORY PROTECTION DEVICE - A respiratory protection device in which a plurality of filter units are provided. A respiratory protection device includes a plurality of filter units. Air flow paths that extend to the facepiece are provided in respective filter units. An inhalation port leading in the facepiece is provided at a portion where the air flow paths merge. The inhalation port can be temporarily closed by using an inspection valve included in the fit checker. | 04-23-2015 |
20150114397 | CHEMICAL AND BIOLOGICAL PROTECTION MASK - A chemical and biological protection mask with dual-external-filter cartridges each having a photo catalytic Titanium Dioxide (TiO2) filter element, alone or in combination with activated carbon filter, combination hydrophobic-hydrophilic filter, and/or other elements, and a miniaturized high-intensity shortwave UV illumination tube internal to the mask itself illuminating both TiO2 filter elements with UVA energy, thereby generating hydroxyl radicals (OH—) which destroy microbes in the air. | 04-30-2015 |
20150136141 | Respirator Having Noncircular Centroid-Mounted Exhalation Valve - A respirator | 05-21-2015 |
20160030778 | RESPIRATOR MASK COMPRISING A SLIDING SEAT DEVICE - The invention relates to a respirator mask comprising a mask. body, comprising at least one exhalation valve and at least one inhalation valve. At least one filter module assigned to the inhalation valve and comprising a sliding seat device for detachably fastening the filter module to the mask body. The respirator mask encompasses an accommodating recess for accommodating at least partially the filter module. The accommodating recess is embodied in a substantially cup shaped manner and, at two opposite side walls, in each case to encompass a guide web. The guide web protrudes into the accommodating recess, wherein the guide webs run parallel to one another and, at two opposite side wall sections, the filter module in each case encompasses at least one guide groove of the sliding seat device for accommodating one of the guide webs in each ease. | 02-04-2016 |