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| Number | Title | Issue Date |
| 8025053 | Pressure regulator assembly A pressure demand regulator assembly for use with a breathing apparatus having a valve assembly that includes an inlet for connection to a source of breathing gas, an outlet for connection to a facepiece to provide breathing gas to the user and an actuator for contr... | 09/27/2011 |
| 7959777 | Devices, systems and methods for testing gas sensors and correcting gas sensor output A method of adjusting the output of an electrochemical sensor including a working electrode and a counter electrode, includes: electronically causing a current flow between the working electrode and the counter electrode via an electrolyte without introducing a test... | 06/14/2011 |
| 7954167 | Body armor and closure mechanism for use in body armor A body armor to be worn by a person includes a front section including ballistic paneling. The front section further includes at least a first front laterally extending section on a first side of the body armor. The first front laterally extending section includes b... | 06/07/2011 |
| 7904971 | Protective padding and protective padding systems The present invention provides pads and padding systems for use in protective helmets, and particularly ballistic helmets. Generally, the pad includes a first, outer layer which provides substantial impact resistance and a second, inner layer which provides cushioni... | 03/15/2011 |
| 7886576 | Photoacoustic gas sensor A photoacoustic sensor includes a sensor system for photoacoustic detection, at least one noise canceling pressure sensor and a control system in operative connection with the noise canceling pressure sensor to actively cancel the effects of noise in the environment... | 02/15/2011 |
| 7870934 | Self-retracting lanyard and braking mechanism with pawl lockout A self-retracting lanyard having a housing; a rotatable drum in that housing; a line for winding about that drum; and an improved braking mechanism for preventing the drum in that housing from ratcheting due to line rebounding after a fall arrest event. The braking ... | 01/18/2011 |
| 7835004 | Gas sensors and methods of controlling light sources therefor A gas sensor includes a light source, a power source in operative connection with the light source and a control system in operative connection with the light source and the power supply. The control system is adapted to control power input from the power source to ... | 11/16/2010 |
| 7762252 | Devices, systems and methods for operation of breathing apparatuses in multiple modes A breathing system with a facepiece that includes a first port adapted to be placed in fluid connection with the outlet of a regulator assembly to introduce pressurized breathing gas into the facepiece; a second port adapted to be connected to an air purifying syste... | 07/27/2010 |
| 7677724 | Spectacle frame mount for face mask A spectacle frame mount provides secure, removable positioning of a spectacle frame in a gas mask or full face respirator. A spring wire mount supports the spectacle frame between two legs of a loop. The spring wire mount includes two leg portions that have lower en... | 03/16/2010 |
| 7536728 | Body armor and closure mechanism for use in body armor Body armor to be worn on the torso of a person includes a front section having ballistic paneling therein and a back section having ballistic paneling therein. The body armor further includes at least one side closure mechanism including a rearward section adapted t... | 05/26/2009 |
| 7530255 | Devices, systems and methods for testing of gas detectors A testing module for use with a gas detector, includes a plurality of gas inlets and outlets, each outlet being in fluid connection with one of the inlets. Each of the outlets is adapted to mate with and form a fluid connection with one of the inlets of a second lik... | 05/12/2009 |
| 7413645 | Devices, systems and methods for testing gas sensors and correcting gas sensor output A method of adjusting the output of an electrochemical sensor includes the steps of: simulating the presence of an analyte gas electronically; measuring a response of the sensor to the electronic simulation; and adjusting the output of the sensor as a function of th... | 08/19/2008 |
| 7296305 | Adjustable headband A headband for use in a headgear support includes a first end section having a plurality of spaced connectors and a second end section including a fastener attached adjacent the end thereof. The fastener includes a connecting member to which at least one cooperating... | 11/20/2007 |
| 7218009 | Devices, systems and methods for generating electricity from gases stored in containers under pressure A breathing system includes a container to store a gas under pressure, wherein the gas includes air or oxygen. The container includes an outlet through which the gas exits the container. The breathing system further includes a generator system including a generator ... | 05/15/2007 |
| 7180076 | Photoionization detectors, ionization chambers for use in photoionization detectors, and methods of use of photoionization detectors A photoionization detector includes a housing, electrical contacts within the housing and an easily removable and replaceable photoionization chamber within the housing. The photoionization chamber includes a cathodic electrode and an anodic electrode which may be c... | 02/20/2007 |
| 7147761 | Electrochemical sensor An electrode for use in an electrochemical sensor includes a catalyst dispersed within an electrolyte. Preferably, the catalyst is immobilized within a matrix of the electrolyte. In one embodiment, the electrode of the present invention includes at least one catalys... | 12/12/2006 |
| 7132659 | Sensor having a communication device, sensor communication system and method of communicating information from a sensor A method of communicating information from a sensor includes the step of modulating the emission of energy from an energy source in a manner that corresponds to information to be transmitted from the sensor through a transmissive section in the sensor housing. Energ... | 11/07/2006 |
| 7110743 | Communications device for a protective helmet A communications device for use with a protective helmet having a headband is provided. Generally, the communications device provides support member for a bone conduction microphone that is easily added to and removed from the protective helmet, allowing the communi... | 09/19/2006 |
| 7106445 | Photoacoustic gas sensor utilizing diffusion The present invention relates to a photoacoustic gas sensor utilizing diffusion having a sensing volume and an acoustic pressure sensor volume containing an acoustic pressure sensor such that the fluid connection between the sensing volume and the acoustic pressure ... | 09/12/2006 |
| 7089603 | Adjustable headband A headband for use in a headgear support includes a first end section having a plurality of connectors extending latitudinally from a lateral surface of the first end section. The headband also includes a second end section having a fastener attached adjacent the en... | 08/15/2006 |
| 7034943 | Gas sensors The present invention relates to a device for accomplishing noise reduction in a photoacoustic gas detector using a sound damping element and/or a background or reference microphone where a preferably larger external volume that acts as a sound damping element (SDE)... | 04/25/2006 |
| 6911180 | Catalytic sensor A combustible gas sensor includes an active element in electrical connection with a measurement circuit. The measurement circuit includes a thermistor network to compensate for the effect of changes in ambient temperature to the resistance of the active element. Ano... | 06/28/2005 |
| 6892725 | Protective hoods and neck seals for use therein A neck seal for use in a protective hood includes an inner section including a passage for donning. The inner section is fabricated from an elastomeric material to form a seal around a neck of a user. The neck seal also includes an outer section adhered to the inner... | 05/17/2005 |
| 6882523 | Instrument assembly systems, housings and methods of mounting instrument assemblies An instrument system includes an instrument assembly having at least one fitting projecting therefrom. The instrument system further includes at least a first housing member including at least one alignment member located therein. The alignment member preferably inc... | 04/19/2005 |
| D498363 | Webbing | 11/16/2004 |
| 6810997 | Controlled descent device A controlled descent device for use in industrial or recreational settings for controlled descent of a user from an upper level to a lower level. The device comprises principally a steel housing, an internal spring-loaded drum on which a webbing line is wound, and a... | 11/02/2004 |
| 6804830 | Full body harness for fall arrest The present invention provides a full body harness which can include curved webbing, a spreading back pad and/or leg buckles which improve the comfort, use and performance of the harness. Preferably, the harness uses five pieces of webbing, namely, two curved webbin... | 10/19/2004 |
| 6799984 | Connectors, instrument assemblies and methods of connecting or disconnecting electrical connections under power A connector includes a first housing section having a plurality of electrically conductive contacts therein. The connector also includes a second housing section including a plurality of electrically conductive contacts that can form an electrical connection with th... | 10/05/2004 |
| 6779629 | Rebar anchorage system for horizontal lifeline A rebar anchorage system for a horizontal lifeline is described as well as the method of installing the same. Preferably, two triangular frames are secured to vertically extending rebar by eight sets of J-bolts and speed nuts. The frames are preferably made of tubul... | 08/24/2004 |
| 6756016 | Gas sensor A gas sensor for the detection of gases comprises a housing and an active element disposed within the housing. The active element is surrounded by a porous insulating material having a bulk density no greater than 0.15 g/cc. Another gas sensor comprises an active el... | 06/29/2004 |
| 6754067 | Instrument assembly systems, housing and methods of mounting instrument assemblies An instrument system includes an instrument assembly having at least one fitting projecting therefrom. The instrument system further includes at least a first housing member including at least one alignment member located therein. The alignment member preferably inc... | 06/22/2004 |
| 6651662 | Alignment and connection mechanism for a mask-mounted regulator An alignment and connection mechanism for more quickly attaching a mask-mounted regulator to the facepiece of a self-contained breathing apparatus is disclosed. The alignment and connection mechanism provides an alignment member preferably mounted on the ... | 11/25/2003 |
| 6443149 | Closed circuit escape breathing apparatus A closed circuit breathing apparatus comprising: a container containing a reactant for reacting with carbon dioxide and water to produce oxygen gas; a housing for the container; a foldable breathing bag and breathing tube assembly, including a mouthpiece ... | 09/03/2002 |
| 6345620 | Flexible respirator filter The present invention provides a flexible respirator filter having substantially coextensive front and back portions of filter material which are sealed to each other along their periphery, forming a sealed edge. A flexible plastic frame is contained with... | 02/12/2002 |
| 6309438 | Filter unit and dust-proof mask therewith The present invention provides a filter containing a filter material folded into a chrysanthemum shape. While such a filter can be made of an electret fiber nonwoven fabric or a fiberglass nonwoven fabric, preferably it is made of a polytetrafluoroethylen... | 10/30/2001 |
| 5992414 | Respirator filter A deformable, pad-type filter is provided which does not have a frame but instead uses two filter elements, at least one having a non-planar configuration in a stress-free condition, which are preferably joined along an outer edge to form an inner chamber... | 11/30/1999 |
| 5957091 | Full body harness for fall arrest The present invention provides a full body harness which utilizes a reduced number of components thereby simplifying construction and reducing manufacturing costs. The harness has only four pieces of webbing, two identical shoulder straps and two identica... | 09/28/1999 |
| 5658688 | Lithium-silver oxide battery and lithium-mercuric oxide battery An active primary battery containing a lithium anode; an aprotic organic electrolyte; a separator; and a cathode made of silver (II) oxide, mercuric oxide, or a mixture of silver (II) oxide and mercuric oxide is described. The battery exhibits high open c... | 08/19/1997 |
| 5577495 | Helmet respirator apparatus Respirator apparatus 10, comprises a monocoque helmet 11, with a visor 14, which is pivotal between an inoperative raised position and an operative lowered position. The helmet 11 is formed of outer shells 17, 18 joined together along the rim and at strat... | 11/26/1996 |
| 5577496 | Respiratory protective apparatus The present invention relates to a respiratory protective apparatus utilizing a powered filtering device having a housing, with at least one inlet and an outlet, and a pump located between the inlet and the outlet for pumping air therebetween. The powered... | 11/26/1996 |
