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| Number | Title | Issue Date |
| 8118026 | Filtering face-piece respirator support structure that has living hinges A filtering face-piece respirator 10 that comprises a harness 14 and a mask body 12. The mask body 16 includes a filtering structure 18 and a support structure 16. The support structure 16 has first and second opposin... | 02/21/2012 |
| 7658190 | Portable air-purifying system utilizing enclosed filters A powered air-purifying respirator that includes an enclosure, defining a single contiguous enclosed interior, an inlet duct, including an inlet and a distribution portion, that guides ambient air to the interior of the enclosure, a plurality of filter canisters dis... | 02/09/2010 |
| 7404401 | Water respirator filter This water respirator filter will allow the individual who is working in dangerous environments to be able to filter air through a water and solid filtering media. The first stage allows the air to pass through the liquid filtering media, such as water, and then pas... | 07/29/2008 |
| 7353827 | Mask, mask shell and seal with improved mounting, mask seal, method of mask manufacture and mask with reduced exhalation noise Mask seal having an embedded mounting member for engaging a mounting member on a mask shell to mount the seal and shell together. Headstrap retention bracket having an indentation for wedgedly engaging a mask shell cylinder to removably mount headstraps to the shell... | 04/08/2008 |
| 7334579 | Low resistance to flow filter The present invention discloses a seamless pad-type filter which is characterized in that it comprises two co-extensive sides, a top side and a bottom side. The top and bottom sides are made of fluid filtration material. The two sides create an inner chamber therebe... | 02/26/2008 |
| 7331364 | Respirator filter canisters and method of filling same A gas mask filter canister of varying shapes is filled by orienting the a fill opening to face upwardly, introducing into the fill opening a particulate filter material, and vibrating the filter canister at a frequency and amplitude, and for a time until a predeterm... | 02/19/2008 |
| 7320722 | Respiratory protection device that has rapid threaded clean air source attachment A personal respiratory protection device 10 that comprises a mask body 12 that has a structure 35 located on it for receiving a clean air supply source such as a filter cartridge 14. The clean air receiving structure 35 has a first... | 01/22/2008 |
| 7311764 | Gas mask filter canister A filter for a gas mask has an elliptical or circular, convex shape to conform to the curvature of the wearer's face, or a planar shape. The filter comprises a double particulate filter element and a double adsorption filter element configured for axial airflow ther... | 12/25/2007 |
| 7296568 | Respirator module with speech transmission and exhalation valve A respirator speech transmitter and exhalation valve module comprising a resilient exhalation valve having a low airflow resistance for exhalation but providing a secure seal against inadvertent inhalation through the exhalation valve module. An exhalation airflow c... | 11/20/2007 |
| 7273052 | Pneumatic sealing system for protection masks A pneumatic sealing system for a gas mask, which seals the mask to the face of the user by using a pump that employs air from inside the gas mask to variably inflate a mask seal during the breathing cycle. A double diaphragm pump, which has a driving diaphragm and a... | 09/25/2007 |
| 7261104 | Respirator facepieces The present invention provides an air-purifying respirator facepiece with a removable, one-piece filter element connector. It also has a removable component housing in the lens as well as a nosecup without inhalation valves that prevents fogging of the portion of th... | 08/28/2007 |
| 7237550 | Respirator containing filter cases A respirator containing filter cases uses cellular elements or positioning boards provided in filter cases to consistently secure a plurality of particle-shape refillable filter materials in place, to prevent air breathing in through the respirator from forming chan... | 07/03/2007 |
| 7234462 | Speech transmission adaptor for use with a respirator mask A speech transmission adapter for use with a respirator mask. The respirator mask has an associated clean air source and defines a clean air envelope between the body of the respirator mask and the face of the wearer and is bounded by a sealing portion of the respir... | 06/26/2007 |
| 7213595 | Multi-stage respirator filter with TIM filter option A filter canister assembly for a gas mask comprising a primary canister with a first filter medium adapted to remove aerosols, particulate materials and droplets from air and a second filter medium comprising an adsorbent filter medium adapted to remove toxic gases ... | 05/08/2007 |
| 7195015 | Breathing apparatus An inhalation opening 6 and an exhalation-opening 4 are formed in the facepiece 2 of a breathing apparatus 1 and the openings can be closed with an inhalation valve 8 and exhalation valve 7, respectively. If a person wearing... | 03/27/2007 |
| 7191778 | Respiratory mask with an air-impermeable shield A respiratory mask includes a shield and a mask body. The shield includes an air-impermeable bent sheet that defines a rim-receiving recess. The mask body is detachably connected to the shield and includes a rim that is received in the rim-receiving recess and that ... | 03/20/2007 |
| RE39493 | Respirator having snap-fit filter cartridge A respirator (10) that includes a face piece (14) and a cartridge receiving structure (22) located on the face piece (14). The face piece (14) is sized to fit snugly over the nose and mouth of a person, and the filter cartridge ( | 02/27/2007 |
| 7182081 | Protective breathing hood A protective breathing hood comprising a hood made of a stretchable fire resistant material and which is also impermeable to gases and biologic material. The hood is sized and shaped for placing over a head of a user in an airtight manner with an opening of the hood... | 02/27/2007 |
| 7171967 | Face mask and method of manufacturing the same A mask includes a filter layer and a support base supporting the filter layer. The filter layer has first and second complimentary portions that together form a rim, where the first portion is connected to the second portion at first and second seams. The first seam... | 02/06/2007 |
| 7152600 | Biohazard mask suitable for civilians A biohazard mask for civilian use comprises bidirectional HEPA filtering to protect both personal and public health during an outbreak. Several measures are taken to maximize comfort and wearability, such as comfort-fit through a gel seal, anti-fogging protection th... | 12/26/2006 |
| 7118608 | Self-powered, wearable personal air purifier A self-powered, personally wearable air purifier includes a sequence of packed bed filter media packets having filter media therein of specifically targeted types that will absorb those ambient air pollutants that have been identified as being particularly dangerous... | 10/10/2006 |
| 7114496 | Filter cartridge with integrated inhalation and exhalation valves The present invention is a filter cartridge with integrated inhalation and exhalation valves. The exhalation valve integrated into the filter cartridge prevents unfiltered air from being inhaled. The inhalation valve(s), also integrated into the filter cartridge, ef... | 10/03/2006 |
| 7093596 | Connection component for a respirator product A connection component for a detachable component on a respirator product is provided with which the component can be connected to the respirator product in a simple manner. A bayonet connection (6, 7) is provided between the component and the respirator prod... | 08/22/2006 |
| 7063087 | Filtering system for the protection against biological agents The invention refers to a filtering system composed by a face mask and a filter against biological agents, joined together by a new connector. The connector joins the filter to the mask in an easy, fast and affective way. The filtering system provides a very high ba... | 06/20/2006 |
| 7036508 | Harness assembly for a nasal mask A harness assembly for a nasal mask for communicating breathable gas to a patient's airways, for example, in the administering of CPAP or like breathable gas delivery treatments, includes a cap portion adapted to engage, in use, the occipital region of the skull. Th... | 05/02/2006 |
| 7032592 | Gas dosing device A device for the dosing of a dry additive gas into a breathing gas in a ventilator system, the ventilator system including a tubing system connectable by at a distal end to a patient, and has a dosing tube connectable to the tubing system for dosing to the distal en... | 04/25/2006 |
| 7028688 | Operationally adaptable chemical-biological mask A chemical-biological protective mask having a weight distribution that imparts a balanced center-of-gravity to the wearer of the mask, and is adaptable for different operational requirements by adjusting or altering the air flow through the mask. The protective mas... | 04/18/2006 |
| 7025060 | Personal breathing filter A personal air filtration device has a cylindrical exhalation tube, with a one-way valve thereon. Concentric around the periphery of the exhalation tube and integrally connected to the exhalation tube rearward (proximate the user's mouth) of the one-way valve is a f... | 04/11/2006 |
| 7022164 | Filters employing porous strongly acidic polymers A clean, high efficiency, low pressure drop, adsorptive filter material that is porous and includes an acidic functional group. The filter can include, for example, a non-woven filter composite has a porous sulfonated divinyl benzene styrene copolymer beads having s... | 04/04/2006 |
| 7014692 | Scrubber A scrubber for eliminating NO from air flowing through the scrubber, comprising a housing (1) having at least one inlet hole (2) and an outlet hole (4) and which is comprising filtering material (6). A second outlet hole (9) is pro... | 03/21/2006 |
| 7007690 | Advanced chemical/biological crew mask An improved crew mask for protection of a user against chemical and biological hazards is provided. The novel crew mask includes the following features: a facepiece that includes a hybrid face seal with both intern and flat seals, and at least one transparent lens p... | 03/07/2006 |
| 7004165 | Nose filter A filtering apparatus fits adjacent to the nostrils and nose of the user and includes a rigid base for retaining a filtering material thereon through which the user may breathe. The filter material takes the form of an open-cell foam, in the form of a pad, which is ... | 02/28/2006 |
| 7004162 | Exhalation valve A mask is provided for the inhalation of medication, such as asthmatic medication. The mask is molded of a resilient plastic or rubber material and has a central through opening and includes an open front portion adapted to receive an aerosolization chamber which re... | 02/28/2006 |
| 6994433 | Electrostatic filtered eyewear An eyewear has a gasket between the user and lenses that electrostatically filter the air flow of particulate while still permitting a gentle flow of air to maintain comfort to the wearer of the eyewear, and prevent fogging on the lenses. The electret filter materia... | 02/07/2006 |
| 6968844 | Mask cover A cover, for a flexible patient breathing mask, which is made predominantly of a soft material and has an open bottom and an internal shape corresponding to the external shape of a patient mask. The cover has a socket piece opening opposite the open bottom. The sock... | 11/29/2005 |
| 6945249 | Easy gripping face mask A face mask is disclosed. The face mask includes an inside surface, an outside surface having at least one edge, and at least one loop having a first end and a second end attached to the outside surface, where the loop is less than about 80 millimeters in length. | 09/20/2005 |
| 6932850 | Pleated filter and a method for making the same A filter may comprise a plurality of pleats, at least one pleat including a pair of pleat legs and pleat tip region. In some embodiments, a thickness of pleat tip region at a point spaced about one to four pleat leg thicknesses from the end of the pleat tip region m... | 08/23/2005 |
| 6915801 | Combination oxygen supplement and swimming snorkel apparatus A swimming snorkel and oxygen supplement apparatus that includes a mask and a headband strap to which is mounted a snorkel device, including a snorkel tube and a mouthpiece for inspiration of atmospheric air therethrough, and an oxygen supply system for communicatin... | 07/12/2005 |
| 6874499 | Filter element that has a thermo-formed housing around filter material A filter cartridge (5), suitable for attachment to a respiratory mask, has a housing that includes an air inlet (27), an air outlet (39), and filter material (17, 19) through which air to be filtered travels through when passing from the ... | 04/05/2005 |
| 6860267 | Self-sealing filter connection and gas mask filter assembly incorporating the same A gas mask having a filter canister mount including an inhalation valve and a self-sealing mechanism that prevents air inflow when a filter canister is removed from the canister mount. In one embodiment, the self-sealing valve includes an elastomeric diaphragm mount... | 03/01/2005 |
