716results about How to "Prevent fogging" patented technology

A system for thermal cycling a plurality of samples. The system includes a case having a fluid-tight cavity defining an interior volume. A microfluidic array is disposed in the interior volume, the array including a sheet of material having a pair of opposed surfaces, a thickness, and a plurality of through-holes running through the thickness between the surfaces. A thermal cycler having at least one thermally controlled surface is adapted to thermally contact the case.

A scanning system is disclosed including a hand-held scanning device for capturing three-dimensional information of an object. The scanner system includes a high-speed transceiver having a high-speed laser light source, a high frequency MEMS oscillating scanning mirror and software for frame registration. Laser based range finding technique is used to map the scanned object. MEMS oscillating at high speed enables rapid and accurate scanning of an object. The scanning can be performed without knowledge or even precise control of the position of the object relative to the scanner. Random movement of the object during scanning is also possible. The scanner can be used for a variety of purposes, including medical and industrial purposes. The illustrated embodiment is in-vivo scanning of human teeth for purposes of orthodontic treatment planning and diagnosis. Several benefits from the scanner are possible: much higher resolution of the scanned object, improved acquisition speed of the three-dimensional information of the surface of the object to be mapped, and the improvement in virtual image clarity.

A system for thermal cycling a plurality of samples. The system includes a case having a fluid-tight cavity defining an interior volume. A microfluidic array is disposed in the interior volume, the array including a sheet of material having a pair of opposed surfaces, a thickness, and a plurality of through-holes running through the thickness between the surfaces. A thermal cycler having at least one thermally controlled surface is adapted to thermally contact the case.

A maintenance-free respirator 10 that includes a mask harness and a mask body 11. The mask body 11 has at least one layer of filter media 56 and has a perimeter 32 that includes an upper segment 34. The upper segment 34 includes first and second concave segments 36, 38 that are located, respectively, on first and second sides of a central plane 40, when viewing the mask body from a top view. A maintenance-free respirator 10 of this configuration is comfortable to wear and can provide a snug fit to a wearer's face, particularly beneath each of the wearer's eyes, while at the same time having an ability to improve compatibility with various protective eyewear.

A motor vehicle dehumidifier, including a dehumidifying drying agent, that can provide a required dehumidifying capacity with a reduced overall quantity of drying agent compared to conventional drying agent-based dehumidifiers. In the present invention, a heat exchanger is disposed on an upstream side of a drying agent unit, and heat is exchanged in the heat exchanger between inside air to be dehumidified and low-temperature outside air used to cool the inside air. The air cooled by the heat exchanger flows into the drying agent unit and is dehumidified. Because the air has an increased relative humidity as a result of being cooled, the amount of water adsorbed from it per unit of drying agent is increased, as the water adsorption characteristic of the drying agent is greatly influenced by the relative humidity of the air passing over it, and is markedly improved by an increase in the relative humidity of that air.

A device is configured for white balancing a medical videoscopic camera system prior to videoscopic medical procedures, as well as optionally simultaneously or non-simultaneously applying a fog-prohibiting agent to the distal lens of a medical videoscope such as an endoscope or laparoscope. The device combines a white balancing mechanism, protective mechanism, and defogging mechanism in one simple easy to use device.

The invention is directed to an article with a liquid-impregnated surface, the surface having a matrix of features thereupon, spaced sufficiently close to stably contain a liquid therebetween or therewithin, and preferable also a thin film thereupon. The surface provides the article with advantageous non-wetting properties. Compared to previous non-wetting surfaces, which include a gas (e.g., air) entrained within surface textures, these liquid-impregnated surfaces are resistant to impalement and frost formation, and are therefore more robust.

A disposable anti-fog airway adapter for use with a mainstream respiratory gas analyzer which provides a measurement of a patient's inhaled and exhaled gases. The airway adapter includes windows that are constructed of a thin, low heat capacity plastic that rapidly equilibrates to the temperature of the warm moist gases in the patient breathing circuit. In addition, the inside of the windows is also coated with an anti-fog surfactant either by laminating an anti-fog film with the window plastic prior to attaching the window to the airway adapter body or by first attaching the window to the airway adapter body and then applying the surfactant to the airway adapter after the window film is bonded in place so that the surfactant coats the entire inside of the adapter. The surfactant functions to increase the critical wetting tension of the surface it covers so that water on the window spreads into a uniform thin layer which does not absorb very much infrared energy and thus does not significantly reduce the signal strength. "Instant on" operation is accomplished because no heater and the like is necessary to warm up the windows to maintain them at an elevated temperature to prevent fogging. Numerous techniques are also provided for adhering the windows to the airway adapter body so that a substantially airtight seal may be obtained.

A system for holding at least one of sample and reagent for analysis. The system includes a pair of parallel covers, at least one of which is light transmissive, of which pair a light transmissive cover forms a top, and of which pair the other forms a bottom. A frame is disposed between the covers to define, in relation to the covers, an interior volume. The frame and the covers are associated with one another to form a case, the case being substantially tight to liquids. A microfluidic array is disposed in the interior volume. The array includes a sheet of material having a pair of opposed surfaces, a thickness, and a plurality of through-holes running through the thickness between the surfaces, the through-holes containing at least one of sample and reagent.

In an air-conditioning system having two air-conditioning passages serving two different air-conditioning zones but having a cooling degree detector provided in only one of the passages to reduce cost, with the degree to which air is cooled in the other passage being estimated based on a cooling degree detected by the detector and the difference between flows of air passing through the passages or an intake temperature of air entering the passages. On the other hand, when an evaporator is possible to be frosted in one of the passages, air flow amount in the one of the passages is corrected to be increased. Therefore, it can prevent a windshield from being fogged while preventing the evaporator from being frosted.

A heat pump cycle device includes a compressor for drawing and compressing refrigerant, a first high-pressure heat exchanger located for heating a first fluid circulating in a first fluid circuit using high-pressure refrigerant discharged from the compressor, a second high-pressure heat exchanger for heating a second fluid circulating in a second fluid circuit using the high-pressure refrigerant flowing out of the first high-pressure heat exchanger, a first heating heat exchanger located to heat a third fluid using the first fluid, a second heating heat exchanger located to heat the third fluid using the second fluid, a decompression unit located to decompress the high-pressure refrigerant flowing out of the second high-pressure heat exchanger, and a low-pressure heat exchanger for evaporating low-pressure refrigerant decompressed by the decompression unit. Because the first and second high-pressure heat exchangers are located, cycle efficiency can be improved.

The present invention discloses a safety goggles structure having a frame connecting portion, a frame latch portion, two frame snap-in portions, a lens connecting portion, a lens latch portion, two lens snap-in portions and two elastic buckles to mount a lens onto a frame for achieving the effect of securely connecting the frame and the lens or improving their connecting stability. With an upper guide channel slantingly and concavely disposed on the frame and a lower guide channel vertically up-and-down and concavely disposed on the frame, gases and liquids can pass through without producing fogs and accumulating liquid on the lens, and foreign substances cannot enter into the safety goggles easily to cause any safety issue. With the design of an upper gutter on the frame, liquid splashed onto the safety goggles can flow along either side of the upper gutter to prevent liquid accumulation or leaking.

An optical lens assembly containing a plural number of lens elements for an optical system to be incorporated into a tip end portion of an endoscopic insertion instrument. Of a plural number of lenses which constitute an optical system, a metal film layer is formed on confronting outer peripheral surface portions of at least two adjacently located lenses, outside respective effective lens areas, and the two adjacently located lenses are assembled and fixedly bonded together by applying solder to the outer peripheral surface portions with a metal film layer.

Out of optical elements that are provided to the top end side of an inserting portion of an endoscope, a first optical element arranged closest to an observation object side and a second optical element joined hermetically to the first optical element via an air layer are joined at joined surfaces by a first adhesive. Also, peripheries of end portions of the joined surfaces are covered with a second adhesive whose moisture permeability is lower than the first adhesive.

The goggles of the invention utilize a substantially rigid frame with separate top and bottom individually rotatable elements, namely an upper browbar and a lower nosepiece, that firmly capture the lens from above and below. The lens is further secured to the frame by projections on each of the browbar and nosepiece which fit through apertures in the lens. At the top, a post which projects forwardly from the frame is received in the well of the browbar by snap-fit engagement. At the bottom, a prong on the rotatable nosepiece passes through a bottom aperture of the lens and is received in a recess of a bottom portion of the frame by snap-fit engagement. The apertures and cooperating projections are preferably located along the center of a one-piece lens. Thus, the rotatable browbar and nosepiece capture the lens top and bottom by edgewise compression and hold the lens front-to-back.

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 the lens used for viewing.

A method and apparatus for controlling a vehicle HVAC system to automatically defog a windshield glass and to prevent fogging or condensation of the windshield glass. The ambient air temperature and vehicle speed are measured and used to determine a windshield glass temperature. The in-cabin air temperature and relative humidity are measured and used to determine a dewpoint. An dewpoint margin is calculated to compensate for sensor accuracy and fog predictability. A fog margin, which is based upon calculated windshield glass temperature and dewpoint, is calculated and used, in conjunction with the dewpoint margin, to control the HVAC system to anticipate potential fogging conditions and to scale the intensity of the HVAC system response based upon the severity of fogging conditions.

An HVAC housing assembly includes a novel structure to aid the mixing of hot and cold air downstream of the evaporator and heater core. One or more variable nozzles are carried for displacement with the temperature door for accelerating some of the cold air stream through an internal housing opening and varying the cold air stream impingement angle with the hot air stream at their point of confluence to establish secondary mixing sites and substantially improving the resulting heat transfer coefficient.

The present invention relates to a method of treating a glazing panel from an inside location. Moreover, the present invention relates to a method of treating glazing panels used in windows and patio doors. Initially, an orifice is formed on both the inside and outside panes on windows and on the side and outside frames of patio doors. Then, particulate matter such as dirt, dust, and mineral deposits are purged from the enclosed volume of the glazing panel by applying a cleaning solution via the orifice. Next, a valve is attached to the outside pane / frame to cover the orifice whereby the valve is designed to reduce the amount of precipitation or matter from entering while allowing air to exit the glazing panel. Finally, a seal is used to cover the orifice on the inside pane or side frame to ensure that the building air does not enter the interior of the glazing panel. The method can also be used to treat windows for high altitude transport, or to prevent explosion in the presence of intense heat.

A method and apparatus for controlling a vehicle HVAC system to automatically defog a windshield glass and to prevent fogging or condensation of the windshield glass. The ambient air temperature and vehicle speed are measured and used to determine a windshield glass temperature. The in-cabin air temperature and relative humidity are measured and used to determine a dewpoint. An dewpoint margin is calculated to compensate for sensor accuracy and fog predictability. A fog margin, which is based upon calculated windshield glass temperature and dewpoint, is calculated and used, in conjunction with the dewpoint margin, to control the HVAC system to anticipate potential fogging conditions and to scale the intensity of the HVAC system response based upon the severity of fogging conditions.

A device is configured for white balancing a medical videoscopic camera system prior to videoscopic medical procedures, as well as optionally simultaneously or non-simultaneously applying a fog-prohibiting agent to the distal lens of a medical videoscope such as an endoscope or laparoscope. The device combines a white balancing mechanism, protective mechanism, and defogging mechanism in one simple easy to use device.

A Cold or Inclement Weather Exposure Mask is designed to fit snugly around the face, head, and neck. The mask serves vital needs of warmth, humidity, and air flow. A raised, malleable chamber covering the mouth and nose provides a breathing space to allow normal breathing while keeping the face warm and dry. The chamber is affixed to a fabric panel made of a water and wind resistant, non-irritating, comfortable, and stretchable material. Velcro® or fastening means on the panel holds the mask in place around the wearer. The chamber includes multiple apertures which allow fresh air to pass to the wearer after it is mixed with warm, humid, exhaled air. The apertures also exhaust air and condensation. A raised lip further aids in the removal of condensation. A valve system optionally regulates the flow of air. Colors and pattern selections allow adaptation to all labor and recreation uses.

Provided is a toner that uses a crystalline resin, and demonstrates favorable dispersibility of the crystalline resin in the toner, demonstrates superior low-temperature fixability, and is able to inhibit fogging. The toner has a toner particle comprising a resin A, which has a long-chain alkyl group having an average number of carbon atoms of 27 to 50, and a crystalline resin, wherein the SP value (cal / cm3)1 / 2 of the crystalline resin is 9.00 to 12.00, and in a GC / MS analysis of components that volatize when the toner is heated for 10 minutes at 200° C., the amount of volatile components of saturated hydrocarbons having 30 to 37 carbon atoms is 90 ppm to 260 ppm of toluene equivalent, based on mass.

The invention discloses a fog-resistant aqueous pressure-sensitive adhesive for a polyethylene protection film. The adhesive is prepared by using the manner of seeded emulsion polymerization. According to the invention, seeded emulsion is prepared at first, then pre-emulsion is added into the seeded emulsion drop by drop, the seeded emulsion and the pre-emulsion fully react by replenishing an initiator, cooling and pH value adjusting are carried out, and a discharged material is filtered. The invention also provides a polyethylene protection film containing the fog-resistant aqueous pressure-sensitive adhesive and a preparation method thereof. Through adjusting utilization amount of a cross-linking agent and gelatinizing content, an appropriate peeling strength of the emulsion pressure-sensitive adhesive prepared in the invention can be obtained; the prepared protection film has good fog resistance when applied on sheet materials like steel plates and titanium plates.

A method for preventing a spread of diseases, promoting better breathing, improving comfort and reducing fatigue. The method utilizes a face mask and a noseform of the type disclosed in U.S. Pat. No. 5,976,173, which is incorporated herein by reference, In a first embodiment, the noseform is an integral part of a mask by forming, adhesion or heat bonding. In a second embodiment, the noseform is added to the mask prior to placing the mask in service with a usual method such as adhesion. In the first embodiment, the noseform is initially mounted on a person's nose by adhesively attaching the noseform to a lower portion of the nose, sliding the noseform upwardly toward the person's forehead and glabella and attaching an upper portion of the noseform to a fixed portion of the nose just below the glabella. The effect of this procedure is to shorten the person's airway and dilate the person's nasal passages. In the second embodiment, the noseform is initially mounted on a mask, followed by the steps of adhesively attaching the noseform to a lower portion of the nose, sliding the noseform upwardly toward the person's forehead and glabella and attaching an upper portion of the noseform to a fixed portion of the nose just below the glabella.