USNR/Kockums Cancar Company Patent applications |
Patent application number | Title | Published |
20130145646 | METHOD AND APPARATUS FOR INHIBITING PITCH FORMATION IN THE WET SEAL EXHAUST DUCT OF A VENEER DRYER - A method and apparatus for operating a dryer used to reduce the moisture content of sheet material. A drying chamber is provided and includes a plurality of drying sections and a single point exhaust system. A seal section located at the input end of the dryer includes an exhaust passage through which a gas sample is drawn by a sampling fan. Gases within the seal section are a combination of ambient air drawn through restricted passages at the entry to the seal section and exhaust gas that bleeds into the seal section from the drying chamber. A controller monitors the temperature of the sampled gases and ambient air and adjusts the rate of exhaust flow from the main exhaust system as a function of the temperature differential. A heating system is also provided for heating the seal exhaust gases above the pitch condensation temperature for the flow. | 06-13-2013 |
20120216420 | METHOD AND APPARATUS FOR CONTROLLING COOLING TEMPERATURE AND PRESSURE IN WOOD VENEER JET DRYERS - An apparatus for drying wood veneer includes an elongate drying chamber including a conveyor for conveying material to be dried from an input end to an output end; and a cooling section for cooling veneer leaving the output end of the drying chamber, the cooling section including a pressure controller for maintaining a pressure in the cooling section that is slightly higher than pressure in the drying chamber while maintaining a near-zero pressure differential between the drying chamber and the cooling section. | 08-30-2012 |
20120105626 | AUTOMATED WOOD SPECIES IDENTIFICATION - Embodiments provide methods, apparatuses, and systems for identification of wood species based on one or more pitch characteristics. A workpiece may be exposed to a beam of radiation from a radiation source. The beam of radiation may cause pitch on or within the workpiece to emit visible light. The emitted light may be imaged and used to determine pitch content, pitch location, a pitch deposition pattern, pitch emission wavelength, and/or other characteristics of the workpiece. One or more of these characteristics may be used to identify a tree species or group of tree species from which the workpiece was cut or manufactured. | 05-03-2012 |
20120036734 | METHOD AND APPARATUS FOR INHIBITING PITCH FORMATION IN THE WET SEAL EXHAUST DUCT OF A VENEER DRYER - A method and apparatus for operating a dryer used to reduce the moisture content of sheet material. A drying chamber is provided and includes a plurality of drying sections and a single point exhaust system. A seal section located at the input end of the dryer includes an exhaust passage through which a gas sample is drawn by a sampling fan. Gases within the seal section are a combination of ambient air drawn through restricted passages at the entry to the seal section and exhaust gas that bleeds into the seal section from the drying chamber. A controller monitors the temperature of the sampled gases and ambient air and adjusts the rate of exhaust flow from the main exhaust system as a function of the temperature differential. A heating system is also provided for heating the seal exhaust gases above the pitch condensation temperature for the flow. | 02-16-2012 |
20110284341 | TAPERED ROLL FEED - The present disclosure provides workpiece feed systems, methods and assemblies comprising one or more tapered feed rolls positioned at an angle to incoming workpieces. The tapered feed rolls may pull individual workpieces toward a guide while gradually accelerating the workpieces and altering their direction of travel. The angle and speed of rotation of the tapered feed rolls may be automatically adjusted to control workpiece speed/acceleration, providing improved gap control and minimizing collisions between successive workpieces. Tapered feed rolls may therefore reduce or eliminate the need for a conventional bridge to decelerate the workpieces after the directional change, reducing the operational space required by a workpiece feed system. | 11-24-2011 |
20100307890 | ROTARY POSITIONING FENCE - Embodiments provide systems, methods and apparatuses for positioning boards and other wood pieces in preparation for sawing/trimming. In embodiments, a continuous track loop conveys board stops slideably mounted to board stop guides positioned perpendicular to the direction of flow. A horizontal frame member provides a series of positioning guides through which a cam follower coupled to a board stop is diverted, thus adjusting the position of board stops in a direction perpendicular to the direction of flow without the use of braking devices or other added sources of mass, friction or vibration. | 12-09-2010 |