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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 7686014 | Nebulizer-connecting device for respirators The aim of the invention is to connect a nebulizer to a breathing air tube of a respirator. This aim is achieved by a nebulizer-connecting device that has a breathing air-directing unit that is provided with a first mechanism for connecting a duct supplying breathin... | 03/30/2010 |
| 7328700 | Respiratory system and method of use A respiratory protection circuit of the type having an air flow regulator disposed in an air flow path between an air supply and a respirator is improved by including an air flow splitter and a bi-directional valve. The air flow splitter is disposed in the air flow ... | 02/12/2008 |
| 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 |
| 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 |
| 7178932 | Welding helmet Apparatus 10 discloses an improved welders helmet having a replaceable lens 16 thereon incorporating an electrically driven fan 14 which receives filtered air through a plurality of air ducts 24 having a filter 22 thereon. A recept... | 02/20/2007 |
| 7156093 | Inflatable respirator hood A respirator hood is designed to fit over and around the head of a wearer and includes a substantially transparent lens received in a front opening of the hood. An inflatable neck cuff is positioned near a lower portion of the hood and substantially circumscribes an... | 01/02/2007 |
| 7089940 | Balanced valve device and breathing apparatus comprising such valve device A valve device, particularly for a breathing regulator for divers, including an inlet chamber which can be connected to a source of gas under super-atmospheric pressure, and an outlet chamber which is under a regulated pressure. A seating, which is movable under the... | 08/15/2006 |
| 7089931 | Respirators A respirator (1) having a plurality of internal masks (2, 3) within an external mask (4), the inner masks (2, 3) being linked by ducts (8, 9) so as to direct the inhaled air from the outside of the mask to the oronasal area via an ... | 08/15/2006 |
| 7036502 | Air curtain device The device for creating a curtain of air across the face is a headset with a fan mounted thereon. The outlet of the fan has flexible tubing or cowling which allows for control of both direction and cross section of a curtain of air that crosses the face. The curtain... | 05/02/2006 |
| 6843717 | Automobile vent extender An automobile vent extender that decreases discomfort by allowing hot and cold air to be directed from an automobile vent directly onto a body portion of an automobile passenger. Preferably, the automobile vent extender removably attaches to a vent diffuser embedded... | 01/18/2005 |
| 6615828 | Flow indicator device for respirators A respirator that comprises a head piece (1) that is shaped to form a breathing zone (13) around at least the nose and mouth of the wearer, and an air flow passage (15, 34) for supplying a forced flow of air to the breathing zone. The air flow passage has... | 09/09/2003 |
| 6394091 | Breathing apparatus A breathing apparatus includes a regulator which delivers air to a user wearing a mask. The regulator is connected to the mask through an adaptor. The adaptor includes an exhalation valve which enables the user's breath to pass out of the adaptor to atmos... | 05/28/2002 |
| 6302105 | Apparatus for supplying breathable gas An apparatus for supplying breathable gas wherein the apparatus includes a main housing, a sub-housing having a gas flow path between a gas inlet and a gas outlet, a power source within the main housing and an impeller within the sub-housing in fluid comm... | 10/16/2001 |
| 5048516 | Respiratory mask A respiratory mask supplies air to a user from an external air source. The mask includes a face shield which sealingly engages the user's cheeks at the sides. The top of the face shield is open. The bottom is fixed to a pliable air hose having a U-shape, ... | 09/17/1991 |
| 5046492 | Clean room helmet system There is described an improved clean room helmet system including a helmet having an inlet port and an exhaust port. Connected to the inlet port is a portable and mobile pressure filtering system for suppling filtered air to the helmet. A separate portabl... | 09/10/1991 |
| 4799477 | Rebreathing mask A face mask is disclosed for enclosing the nose and mouth of humans and defining an air chamber from which a human may inhale and exhale gases. The mask comprises an inflatable bladder that encircles the air chamber, the bladder having elliptical perforat... | 01/24/1989 |
| 4353292 | Assembly for storing and facilitating application of breathing devices An assembly installable at an underground mine site for storing breathing apparatuses and for facilitating access to and application of such apparatuses comprises a matrix of storage receptacles closable on a common side by respective spring-loaded hinged... | 10/12/1982 |
| 4276877 | Respiratory method and apparatus A method of supplying respiratory air to a user, and a breathing apparatus for this purpose. An inner and an outer mask are provided, the inner mask communicating only with the respiratory passages of the user and the outer mask covering the face of the u... | 07/07/1981 |
| 4258710 | Mask-type respirator Respirator of the mask-type covering the nose and mouth of a wearer to protect him from environments containing air-borne obnoxious particles and gases having a combination of a compressed air inlet regulator on the face of the mask, internal baffling whi... | 03/31/1981 |
