Patent application number | Description | Published |
20090301701 | Use of a Heat Exchanger Tube - The invention relates to the use of a heat exchanger tube, comprising a copper alloy, which contains the alloying elements [in percent by weight] 0.05-3% Fe, 0.01-0.15% P, and optionally 0.05-0.2% Zn, 0.02-0.05% Sn and residual Cu as well as unavoidable impurities, as a gas-cooler, condenser or evaporator tube of a refrigerator or heat pump operating with CO2. | 12-10-2009 |
20100193170 | Heat exchanger tube and method for producing it - The invention relates to a heat exchanger tube with a tube axis and with a tube wall having a tube outside and a tube inside, axially parallel or helically encircling inner ribs, with a groove which lies in each case between adjacent inner ribs, being formed from the tube wall on the tube inside, the helix angle, measured with respect to the tube axis, of the inner ribs being smaller than or equal to 45°, the region of the inner ribs which is remote from the tube wall being deformed at regular intervals asymmetrically on one side essentially in the tube circumferential direction, the deformed material of the inner ribs forming protrusions above the groove, the protrusions extending in each case over a finite deformation zone along an inner rib, the markedness of the deformation changing continuously within the deformation zone, the deformation being marked to a greater extent in the middle of the deformation zone then at the margins, and cavities which assist the formation of bubbles being located between the groove bottom, the sides of the inner ribs and the protrusions formed. | 08-05-2010 |
20100288480 | Metallic heat exchanger tube - The invention relates to a metallic heat exchanger tube ( | 11-18-2010 |
20110146963 | Heat exchanger tube and methods for producing a heat exchanger tube - The invention relates to a heat exchanger tube with a tube axis, with a tube wall, with a tube outside and with a tube inside. Continuously running, axially parallel or helically circling inner ribs are formed out of the tube wall on the tube inside, each inner rib having two rib flanks and a rib tip. A continuously extending groove is formed in each case between adjacent inner ribs. The rib tip has at regular intervals recurring elevations which have an essentially frustopyramidal form. In the solution according to the invention, the rib flanks of the inner ribs are raised in the radial direction on the contour line which is defined by the transitional edge of a rib flank to the rib tip, in that protuberances advancing out of the rib flank are formed in this region. Furthermore, the invention relates to a method for producing a heat exchanger tube. | 06-23-2011 |
20140284036 | CONDENSER TUBES WITH ADDITIONAL FLANK STRUCTURE - The invention relates to a heat exchanger tube with a tube axis, a tube wall and with ribs extending around on the tube outer side. The ribs have a rib foot, rib flanks and a rib tip, wherein the rib foot projects substantially radially from the tube wall. The rib flanks are provided with additional structural elements which are arranged laterally on the rib flank. First material projections, which extend substantially in the axial and radial direction, adjoin second material projections which extend substantially in the axial and circumferential direction of the tube, wherein the first and second material projections have a common boundary line. According to the invention, the axial extent of the first material projections along this boundary line is less than the axial extent of the second material projections. A further aspect of the invention is that the first material projections adjoin in each case a point on second material projections and that the axial extent of the first material projections at this point is equal to zero. Furthermore, a further aspect of the invention is that the first material projections are arranged at a distance from the second material projections. | 09-25-2014 |
20140352939 | EVAPORATOR TUBE HAVING AN OPTIMISED EXTERNAL STRUCTURE - The invention relates to a metal heat exchanger tube for the evaporation of liquids on the outside of the tube, comprising a tube axis, a tube wall, and integrally formed ribs that run circumferentially on the outside of the tube. The ribs have a rib foot, rib flanks, and a rib tip, wherein the rib foot projects substantially radially from the tube wall. A respective groove is located between every two ribs that are adjacent to one another in the axial direction. At least first, second, and third lateral material projections, which are formed from the material of the ribs, are arranged on a first, second, and third level on the rib flanks in such a way that the grooves are largely covered by all of the material projections. According to the invention, the first, second, and third lateral material projections are formed on levels that are in each case differently spaced apart from the tube wall in the radial direction. | 12-04-2014 |
20140366375 | HEAT EXCHANGER TUBE AND METHOD FOR PRODUCING IT - A heat exchanger tube with a tube axis and with a tube wall having a tube outside and a tube inside, axially parallel or helically encircling inner ribs, with a groove which lies in each case between adjacent inner ribs, being formed from the tube wall on the tube inside, the helix angle, measured with respect to the tube axis, of the inner ribs being smaller than or equal to 45°, the region of the inner ribs which is remote from the tube wall being deformed at regular intervals asymmetrically on one side essentially in the tube circumferential direction, the deformed material of the inner ribs forming protrusions above the groove, the protrusions extending in each case over a finite deformation zone along an inner rib, the markedness of the deformation changing continuously within the deformation zone. | 12-18-2014 |
Patent application number | Description | Published |
20090044650 | GEAR ARRANGEMENT - A gear arrangement is provided with a built-up for a shaft or pinion to rotate in unison therewith. The gear includes a gear rim and two flanges arranged axially on both sides and fixed them against the gear rim in a positive-locking connection. A hub, over which the respective other parts of the gear are pushed, is formed on at least one of the parts of the gear. The parts of the gear are held together without the use of rivets or screws by a clamped connection including a clamping ring, which is caused to mesh with a groove extending circumferentially on the circumference of the hub or shaft. The clamped connection presses the respective flange outer surface in a spring-mounted manner. Mutually corresponding elevations and depressions on the axial outer surfaces of the gear rim as well as on the axially inner surfaces of the flanges mesh with one another. | 02-19-2009 |
20090056488 | SPIRAL-TOOTHED GEAR WHEEL FOR RACK AND PINION STEERING - A spiral-toothed gear wheel for a rack and pinion steering. The spiral-toothed gear wheel includes a pinion, which meshes on the power take-off side with a toothed rack, and a spiral-toothed gear, which is arranged on the pinion on the drive side in such a way that they rotate in unison, and on which a torque caused by a steering power or/and steering assist power acts. The spiral-toothed gear is designed as a built-up gear and includes a gear rim, which is arranged, relative to the axial direction of the gear or of the pinion thereof, between two flanges. The gear rim is pushed over a hub formed at one of the flanges and is fitted together with the flanges in a positive-locking manner. One of the flanges, namely, the flange having the hub for the gear rim, is made in one piece with the pinion. | 03-05-2009 |
20100098899 | PROCESS FOR MANUFACTURING PLASTIC MOLDING AND MOLDING MANUFACTURED ACCORDING TO THAT PROCESS - A process for manufacturing plastic moldings while increasing the coefficient of viscosity of the raw material used to manufacture same and to a molding manufactured according to the process. To increase the loadability and the service life of moldings manufactured by injection molding, which are subject to dynamic loads during their use, the granular material used is tempered before the shaping processing in the injection molding process for a period of 10 hours to 30 hours at a temperature between 90 C and 150 C. Without resorting to higher-priced materials, highly loadable moldings can be manufactured by this process, which can be advantageously used by the manufacturer without a greater effort. A corresponding molding, such as a worm gear, manufactured according to the process from a granular material with an original solution viscosity between 180 mL/g and 190 mL/g, has a solution viscosity between 180 mL/g and 200 mL/g. | 04-22-2010 |
20100282012 | Skew Gear with Attenuation - The invention relates to a skew gear constructed as a built skew gear and provided with attenuation. The skew gear wheel has a first flange for rotation-locked arrangement of the skew gear on a shaft or a pinion, a second flange or a disk, and a ring gear arranged and rotatable therebetween. The two flanges, or the first flange and the disk, are frictionally or positively connected with one another, wherein their respective elements providing the connection extend through the ring gear in the axial direction. According to the invention, at least one elastomeric element is overmolded on an inside contour of the ring gear for forming the attenuation, so that the ring gear and the attenuation form a single unit. | 11-11-2010 |
20110221153 | COUPLING BAR FOR A VEHICLE - A linking rod for a vehicle comprising a basic body ( | 09-15-2011 |
20110222959 | JOINT AND/OR MOUNT ARRANGEMENT - A joint or bearing arrangement ( | 09-15-2011 |
Patent application number | Description | Published |
20100247689 | Agent containing fat (oil), which contains onion extract, the production and use thereof for caring, preventing or treating damaged skin tissue, especially scarred tissue - The invention relates to a novel agent containing fat (oil), which contains onion extract, in addition to the production and use thereof for caring, preventing or treating damaged skin tissue, such as after operations, biopsies, wounds, burns and other accidents, and especially scarred tissue, stretch marks, degenerative skin conditions and others. The agent is characterised in that the base thereof is based on oil, which can be used to produce, for example, cream, lotion, fluid, massage, or balm based products which contain fail (oil). Surprisingly, the onion extract, which contains water, alcohol or water-alcohol, can be integrated into a base containing oil without the effectiveness thereof being reduced or a phase separation being produced. The effectiveness thereof could be proved when the medical application thereof was monitored. | 09-30-2010 |
20110034563 | COMPARTMENT-SPECIFIC PLANT EXTRACT COMBINATION OF GINKGO BILOBA EXTRACT AND GINSENG EXTRACT HAVING A TANDEM EFFECT - The invention relates to a plant extract combination of | 02-10-2011 |
20110250270 | Compositions containing a capillary-active system with application-relevant diffferentiability and their use - A composition that has a capillary-active system C optionally containing a capillary activator system CA consisting of drugs that increase blood flow, stabilize the vascular wall, and/or dilate the blood vessels; and/or a capillary-protective system CP comprising drugs for endothelial stabilization, lipoprotein protection, and for stabilization of leukocytes/platelets; and/or a capillary energy supply system CE comprising redox systems and cofactors in energy provision and energy carriers. This system C is combined with a selective action system S. The compositions are useful, systemically or enterally, especially for the selective control, for example, of structural changes, functional disturbances of the target organs in question (hair, skin, cerebrum, skeleton, muscles, gastrointestinal tract, eyes) as supplements (food supplements, supplementary balanced diet, dietary components), or pharmaceutical agents. | 10-13-2011 |