| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 128206170 | With separate filter encircling element, or housing, securing filter on mask | 23 |
| 20080223370 | Dustproof mask - A dustproof mask that can be used semi-permanently, allows easy respiration and conversation, improves wear comfort and dust preventing effect, and filters harmful air. A mask main body and wearing band, wherein the mask main body includes an adhering piece formed at an inside edge of main body. A fixed frame forms an exhaust space at an inner center. Multiple exhaust holes are formed on both ends of exhaust space. The exhaust panel is inserted in and fixed with fixed frame, having multiple discharge holes. Multiple shield films are formed on the front side of discharge holes and opened at exhalation. A filter cover is formed on both sides of mask main body as a single body. A removable and replaceable filter case is combined with the filter cover. A dustproof nonwoven fabric, carbon filter, antibiotic nano-silver filter, dustproof nonwoven fabric are included in the filter case. | 09-18-2008 |
| 20080283063 | Universal dusk mask/filter for ATV and dirt bike riders, method of making and method of using - A face/dust mask constructed from differently-shaped filter media parts, each part having a different function, and each part interconnected so as to form a fitted air filter. Dual filters assist in eliminating from the intake air a substantial amount of the dust and debris encountered by riders of dirt bikes, manual bicycles, All-Terrain Vehicles, and other machines operated over unimproved, dusty terrain. By the nature of the materials and contours of the component parts, the mask fits comfortably and effectively for both adult and child users. The invention is highly resilient so as to adapt itself to the interior shape of a protective helmet or the mouthpiece section of a motorcycle helmet or similar safety helmet which is placed into position over the mask. The mask is of versatile design so as to enable a variety of embodiments with different filtering capabilities. | 11-20-2008 |
| 20090078264 | FILTERING FACE-PIECE RESPIRATOR HAVING A FRAME FOR SUPPORTING THE EXHALATION VALVE - A filtering face-piece respirator | 03-26-2009 |
| 20090101151 | FILTER DEVICE FOR AIRBORNE PATHOGENS - This invention relates to a disposable handheld device that is put into the user's mouth, held by the teeth and sealed by the lips to stop or significantly reduce the spread of airborne pathogens from user coughing or sneezing. Preferred devices are recyclable, plastic, and are configured to be used with a filter infused with a germicide, bactericide, and/or a viricide. The devices provided herein can also protect the user by acting as a breathing filter that traps pathogens during inhalation and exhalation. Additionally, the devices herein are discrete and can be hidden in the hand of the user and placed in the mouth. Further preferred devices are hollow so it can be easily inspected at airport security or border checkpoints. Preferred devices herein also include an external clip to allow the user to secure the device in a pocket or on a lanyard around the user's neck. | 04-23-2009 |
| 20100122703 | 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. | 05-20-2010 |
| 20100132712 | RESPIRATOR - Described is a respirator ( | 06-03-2010 |
| 20110108035 | Nex-Gen Respirator / Surgical Mask - A face mask for use as a procedure mask, isolation mask or dental face mask having a transparent shell with one opening for covering the nose and mouth of a person and a housing having a first and a second air passageway with a chamber located therebetween for holding a replaceable filter coupled to the one opening in the transparent shell. Elastic straps which are attached to the transparent shell are adapted to be placed around a user's head to hold the transparent shell against the face of the user and the transparent shell is made of a clear latex free plastic. | 05-12-2011 |
| 20110132373 | Biohazard Mask Filter - An exhalate filter medium for a biohazard mask is made of polytetrafluoroethylene (PTFE) and surrounding layers of a wicking material and an antimicrobial material. The exhalate filter may be contained in a removable and replaceable cartridge snap-fit into the surface of a biohazard mask. | 06-09-2011 |
| 20120199130 | HYGIENIC MASK FOR AIRCRAFT CREWMEMBER AND A MASK ASSEMBLY COMPRISING THE HYGIENIC MASK - Hygienic mask ( | 08-09-2012 |
| 20120325221 | Lightweight Respirator - This invention relates to respirator, a half face mask with the shape of a concave-rectangular cup that fits the facial features comfortably. The mask covers user's mouth and nostrils to provide a breathing chamber and has three opening ports, one on the bottom receiving the filter cartridge and two of the same dimension on the sides receiving the exhalation tubes. The three components are grooved-fitting embedded into the mask and have one-way air flow functionality controlled by the mean of flapper valve mechanism. The filter cartridge contains layers of mesh and chemical compounds to filter dust particles, destroy carbon monoxide and absorb other toxic gases. The present invention offers a respirator having the functionality of a gas mask but aesthetic-simplicity shape of a half face mask which commuters can conveniently wear in polluted metropolitan or hazardous atmosphere to prevent dust particles and toxic gases go into wearer's lung. | 12-27-2012 |
| 20130125896 | SIDE PLUG-IN FILTER CARTRIDGE - A respirator | 05-23-2013 |
| 20140261437 | Respirator Mask and Filter Unit Therefore - A filter unit for a respirator mask, including: a body having an air inlet portion, an air outlet portion, and a connector for attaching the filter unit to a portion of the respirator mask; a filter member for filtering the incoming air; and a sealing arrangement having a frame at least partially surrounding a pressure arrangement configured to be urged towards and into contact with a contact portion of the body, such that the passage of air is substantially prevented from passing through at least one of the at least one air inlet portion and the at least one air outlet portion, wherein the pressure arrangement includes a flexible portion to facilitate the urging of the pressure arrangement towards the portion of the body. | 09-18-2014 |
| 20140283840 | REMAINING SERVICE LIFE INDICATION SYSTEM FOR GAS MASKS CARTRIDGES AND CANISTERS - Gas masks and canisters for gas masks have a chemical sorbent that protects the respiratory system of the wearer from gaseous compounds. The remaining service indication systems for respiratory protections systems provide a warning to the wearer that the capacity of the chemical sorbent to adsorb or absorb further compounds is nearly depleted. A remaining service life indication system has a computer memory device for storing information concerning the canister for determining an end of the service life of a gas mask, a canister and/or a cartridge and such devices from the input of various sensors. | 09-25-2014 |
| 20140290661 | Breathing airbag device - A breathing airbag device includes a filter airbag, an inner holding stand, a nose holder, a mouth holder, and two elastic straps, wherein the filter airbag is adapted for interacting with and filtering the outside air, the inner holding stand is adapted for supporting and fixing the nose holder and mouth holder, the nose holder is adapted for fittingly supporting the human nose, the mouth holder is adapted for fittingly supporting the human mouth, the inner holding stand is located on the filter airbag, the nose holder and the mouth holder are located on the inner holding stand, and two ends of each of the elastic straps are fixed to an edge position of the nose holder. The present invention has some advantages of good tightness, simple structure and low manufacturing cost. | 10-02-2014 |
| 20140366883 | FILTER BOX ASSEMBLY AND FILTER UNIT - A filter unit for use in a filter box assembly, the filter unit comprising a particulate filter layer and a gas filter layer, the particulate filter layer being configured to bias towards the gas filter layer, exerting pressure thereon. There is also described filter box assemblies (including a duel filter assembly) comprising the filter unit, and a respiratory protective device comprising the filter unit. Also described is a method of manufacturing a filter unit with a gas filter layer and a particulate filter layer, wherein a force is applied to the particulate filter layer causing it to fix the gas filter layer in place. Also described is a method of manufacturing a dual filter assembly wherein a casing is twice reversibly attached to and detached from a support surface, filter units being added to the casing when the casing is attached to the surface. | 12-18-2014 |
| 20150047642 | Half Facepiece - A semi-disposable face mask has a shaped molded base composed of silicone and/or TPE and molded forming a face seal, a filter media and a support structure that houses the shaped molded base and filter media in fluid communication allowing airflow from an environment through the filter media to the face seal. | 02-19-2015 |
| 20150136142 | Respirator With Floating Elastomeric Sleeve - A respirator device having an elastomeric sleeve is provided. In an exemplary embodiment, a respirator device as described herein includes a body including a receiver having an elastomeric sleeve and a filter cartridge that includes a rigid nozzle element. The elastomeric sleeve defines a channel, and the elastomeric sleeve is configured to deform around the nozzle element when the nozzle element is inserted into the channel. | 05-21-2015 |
| 20150314146 | RESPIRATORS - A respirator comprising an outer mask in which is defined a main volume and an oronasal mask located within the outer mask and defining a secondary volume. Air for breathing enters the mask via a one-way valve and filter. Exhaled air exits the mask via an exhale conduit fitted with an exhale valve. A conduit is provided for the passage of air from the outer mask to the oronasal mask. The conduit is fitted with a one-way valve and a filter. The filter is such as to filter either particular or vapor challenges, or a mixture of these, as required. | 11-05-2015 |
| 20150314147 | RESPIRATORY MASK AND FILTER CARTRIDGE THEREFOR - A filter cartridge for a respiratory mask includes a housing comprised of an inner receptacle having an open end and an outer cover mounted over said open end of said inner receptacle. The outer cover includes, in a covering surface thereof, an air intake aperture in fluid communication with said inner receptacle. The outer cover is pivotally mounted to the inner receptacle and configured for pivotal movement relative thereto between a first configuration in which there is a gap between said open end of said inner receptacle and said outer cover such that a respiratory airway is defined between said intake aperture and said inner receptacle, and a second configuration in which said outer cover substantially seals said open end of said inner receptacle and said respiratory airway is thereby blocked. | 11-05-2015 |
| 20150346174 | EXPOSURE MONITORING - A filter medium of an air purifying respirator captures one or more substances from the air in a worker's environment as the worked breathes. Air contaminants captured by the respirator filter media can be subsequently analyzed and measured. An air flow meter placed at an air channel of the respirator measures air flow and/or total air volume inspired by the worker wearing the respirator. Personal chemical exposure of the worker can be assessed from the filter media measurements and air flow data. | 12-03-2015 |
| 20160001102 | Structure and Method For Recognizing Information on a Filter Installed in an Air Purifier of a Respirator - Provided is a method of recognizing information on a filter unit mounted on an air purifier of a respirator wherein the air purifier and the filter unit of the respirator which filters polluted external air and supplies purified air to a worker are wirelessly interconnected such that a control unit of the air purifier may provide the worker with information on the filter unit such as a type, a load rate depending on a blockage degree of the filter unit, a final operation time, a residual operation time, and a replacement time of the filter unit through information data transmitted from the filter unit. It is possible to precisely recognize the filter unit appropriate for a workplace and a work environment, thereby preventing an error, failure, and malfunction of the filter unit and simultaneously with continuously working. The air purifier and the filter unit are wirelessly interconnected through radio frequency identification (RFID), wireless fidelity (Wi-Fi), near field communication (NFC), Bluetooth, or Zigbee to detect a type of a filter, recognize information of the detected filter such as an operation time and life thereof by counting an operation time of the filter, and allow a wearer to recognize the information. | 01-07-2016 |
| 20160001107 | Respirator Filter Interface - A respirator filter connection mechanism with a first attachment element, the first attachment element associated with a respirator mask. The mechanism has a second attachment element which is associated with a filter. It also has openings provided through the first and second attachment elements and configured to be aligned with an inlet or discharge port of the mask and an inlet or discharge port of the filter. One of the first and second attachment elements includes a spring element located proximate to a corresponding opening, while another the first and second attachment elements includes an attachment shelf located proximate to a corresponding opening. The spring element is configured to be linearly advanced into initial engagement with the attachment shelf until the spring element and attachment shelf couple to one another in an intermediate loaded position. The attachment shelf has a cam feature that slidably engages the spring element and pulls the spring element from the intermediate loaded position into a locked and sealed position as at least one of the attachment shelf and spring element is rotated relative to the other of the attachment shelf and spring element. | 01-07-2016 |
| 20160193486 | Personal Respiratory Protection Device | 07-07-2016 |
