Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7992299 | Method for the economical production of heat exchanger tubes bent in a u-shape The invention relates to a method for the manufacture of tubes bent in a U-shape (hairpin tubes) from a nonferrous metal, immediately following a tube production line. For that purpose, according to the invention, the method for the manufacture of tubes bent in a U-... | 08/09/2011 |
| 7790295 | Composite material in strip form and its use, composite sliding element The invention relates to a material composite in strip form, process for producing said composite and use of the material composite as a sliding element. The material composite comprising a layer consisting of a copper multicomponent alloy which is permanently joine... | 09/07/2010 |
| 7716836 | Method of producing a plain bearing bush or bearing shell of varying width The invention relates to a method of producing a plain bearing bush or bearing shell of varying width from a flat strip material, which comprises the following steps: incorporating grooves in the flat strip material along the bush ... | 05/18/2010 |
| 7686899 | Process for producing a sliding bearing with a sliding surface, consisting of a copper multicomponent alloy The invention relates to a process for producing a sliding bearing with a sliding surface, which is made of a copper multicomponent alloy with at least two phase constituents, in which process at least one phase constituent at the sliding surface is dissolved by mea... | 03/30/2010 |
| 7504160 | Sliding body and process for producing a sliding body, and its use The invention relates to a process for producing a sliding body made up of a base body and a slide plate with a running surface arranged on the base body, wherein the slide plate and the base body are joined to one another by capacitor discharge welding. It is prefe... | 03/17/2009 |
| 7451542 | Method of manufacture of heat-exchanger tube structured on both sides The invention relates to a heat-exchanger tube structured on both sides with excellent heat transfer characteristics utilizing both outer and also inner fins and secondary grooves intersecting the inner fins. Two spaced-apart rolling tools are provided in the utiliz... | 11/18/2008 |
| 7354489 | Lead-free copper alloy and a method of manufacture A lead-free copper alloy based on Cu—Zn—Si and a method of manufacture thereof. The copper alloy is built on the basis of copper, zinc and silicon without toxic additives and consists of: 70 to 83% Cu, 1 to 5% Si and the further matrix-active elements: 0.01 to 2... | 04/08/2008 |
| 7316849 | Semi-finished product made out of a ductile material with breaking areas A band-shaped semi-finished product is made out of a ductile material and is configured to be separated into at least two sections. At least one pair of wedge-shaped, non-cuttingly formed longitudinal notches are formed, between the tips of which there remains a thi... | 01/08/2008 |
| 7189630 | Layer sequence for producing a composite material for electromechanical components The invention relates to a layer sequence on a substrate made from copper, a copper-based alloy, a copper-plated substrate or a nickel or a nickel-based alloy for production of a composite material, in which a covering layer, consisting of tin or a tin-based alloy, ... | 03/13/2007 |
| 7165681 | Device and method for sorting of bent elongated articles A device for sorting bent elongated articles, in particular rods or tubes, having a measuring span with an inclined plane, down which the articles roll. A separating system provided at the outlet end of the measuring span sorts the bent articles from the straight ar... | 01/23/2007 |
| 7162069 | Objectification of surface test methods through image processing The invention relates to the objectification of surface test methods through image processing. Information z(x, y) is measured and recorded for each image point (x, y) of the measuring field of an examined specimen surface, and resultant magnitudes are calculated th... | 01/09/2007 |
| 7132172 | Composite material for use in the manufacture of electrical contacts and a method for its manufacture An electrically conductive composite material for use in the manufacture of electrical contact components, consisting of a metal strip and a contact layer made of a silver or tin contact material, which contact layer is applied at least to one side of the metal stri... | 11/07/2006 |
| 7090801 | Monitoring device for melting furnaces Cracking of a crucible can cause heavy damage to the system in melting furnaces. A reliable monitoring of threatening breaking out of the melt is therefore needed. For this purpose a monitoring device for melting furnaces is provided to monitor the breaking out of m... | 08/15/2006 |
| 6913073 | Heat transfer tube and a method of fabrication thereof A metallic heat transfer tube, in particular for the evaporation of liquids from pure substances or mixtures on the outside of the tube. Fins are integrally formed on the outside of the tube. Recesses are arranged in the area of the base of the primary grooves and e... | 07/05/2005 |
| 6866818 | Method of using a spray formed copper-nickel-manganese alloy A method for the manufacture of tools and components for the offshore field and the mining industry, in particular, for drilling installations, using a spray formed Cu—Ni—Mn alloy of 10 to 25% Ni, 10 to 25% Mn, the remainder being copper and common impurities. D... | 03/15/2005 |
| 6811623 | Copper-nickel-manganese alloy, products made therefrom and method of manufacture of products therefrom A Cu-Ni-Mn alloy which consists of 15 to 25% Ni; 15 to 25% Mn; 0.001 to 1.0% of a chip-breaking additive (lead, carbon, etc.), the remainder being copper and common impurities. The alloy can preferably be used as a replacement material for Be-containing copper mater... | 11/02/2004 |
| 6786072 | Method of fabricating a heat exchanger tube A metallic heat transfer tube, in particular for the evaporation of liquids from pure substances or mixtures on the outside of the tube. Fins are integrally formed on the outside of the tube. Recesses are arranged in the area of the base of the primary grooves and e... | 09/07/2004 |
| 6749699 | Silver containing copper alloy A copper alloy that consists essentially of, by weight, from 0.15% to 0.7% of chromium, from 0.005% to 0.3% of silver, from 0.01% to 0.15% of titanium, from 0.01% to 0.10% of silicon, up to 0.2% of iron, up to 0.5% of tin, and the balance copper and inevitable impur... | 06/15/2004 |
| 6722420 | Internally finned heat transfer tube with staggered fins of varying height A heat transfer tube with a finned inner surface is divided into at least two zones (Z1 to Zm) in a peripheral direction. The fins extend at an angle of inclination α with respect to the longitudinal axis of the tube, are arranged in the indiv... | 04/20/2004 |
| 6631758 | Internally finned heat transfer tube with staggered fins of varying height A heat transfer tube (1) with a finned inner surface, which is divided into at least two zones (Z1 to Zm) in peripheral direction. The fins (2, 3), which extend at an angle of inclination with respect to the longitudinal axis... | 10/14/2003 |
| 6522153 | Classification of the surface structure of heat exchanger tubes by means of doppler radar spectroscopy A method for the quick classification of structured inner and/or outer surfaces of heat exchanger tubes by means of Doppler radar spectroscopy. The measured variables are determined from the frequency spectra. Surface integral A, average value m and variance S (or ... | 02/18/2003 |
| 6488078 | Heat-exchanger tube structured on both sides and a method for its manufacture The invention relates to heat-exchanger tubes structured on both inner and outer sides with excellent heat-transfer characteristics, which have recesses on the outside and ribs with specific dimensions on the inside. The structuring tools utilized for the... | 12/03/2002 |
| 6457516 | Heat transfer tube for evaporation with variable pore sizes The invention relates to a heat-transfer tube, in particular an evaporator tube, with fins circumferentially extending on the shellside, which fins are shaped to essentially closed-off channels. The channels are open to the outside through pores with at l... | 10/01/2002 |
| 6346215 | Copper-tin alloys and uses thereof A copper alloy contains from 4 to 20 wt. % tin and various other metals. The alloys can be used in the manufacture of structural parts which are joined together through the use of heat such as jewelry, clothing accessories and mechanically stressed struct... | 02/12/2002 |
| 6136103 | Copper-tin-titanium alloy A copper-tin-titanium alloy which consists of 12 to 20% by weight tin, 0.002 to 1% by weight titanium, remainder copper and usual impurities. It is possible to add further elements. Semifinished products made from the copper alloy according to the inventi... | 10/24/2000 |
| 6099977 | Strip composite material and a method and apparatus for its manufacture The invention relates to a strip composite material with a base material of a metal or a metal alloy and a tin coating on the surface, whereby an intermetallic phase (IMP) is formed between the base material and the coating. In particular for achieving go... | 08/08/2000 |
| 6097333 | Method for range measurement and contour detection by means of microwaves A method provides for contactless measurement of the range between a transceiver unit for microwaves in the frequency band from 1 to 100 GHz and an object to be investigated using a pulse principle. The microwaves are focused onto the surface by an antenn... | 08/01/2000 |
| 6067832 | Process for the production of an evaporator tube A process for producing a heat exchanger tube (1) with a highly porous surface structure, in particular for evaporating liquids from pure substances or mixtures on the outside of the tube. The process starts from a rolling operation, by means of which hel... | 05/30/2000 |
| 5803164 | Multiple finned tube and a method for its manufacture A metallic finned tube having multiple fins integrally formed on and extending helically on an outside of the tube. The fins number at least four and begin at fin run start locations spaced evenly about a circumference of the tube, with at least one group... | 09/08/1998 |
| 5775411 | Heat-exchanger tube for condensing of vapor The invention relates to a metallic heat-exchanger tube (1) with fins (2) which annularly or helically extend or rather extend in axial direction on the outside of the tube for condensing of vapor from pure substances or mixtures on the outside of the tub... | 07/07/1998 |
| 5766377 | Copper-zinc-alloy for use in drinking-water installations A drinking water installation is made up of a source of drinking water and equipment for delivering the drinking water. In the equipment for delivering drinking water, a copper-zinc alloy which does not contain lead or bismuth is used. This alloy has a co... | 06/16/1998 |
| 5766776 | Strip shaped or wire-shaped compound material A strip-shaped or wire-shaped compound material with a base material of copper or a copper alloy and with a moltenly applied surface coating of a tin alloy, whereby between both materials there is formed an intermetallic phase. The inventive additive of 0... | 06/16/1998 |
| 5761807 | Method of manufacture of a multiple finned tube A metallic finned tube, in particular for heat exchangers, which includes multiple integral fins helically extending on the outside, with the n fin run starts starting at the start of the tube and are evenly distributed around the tube periphery. The finn... | 06/09/1998 |
| 5712048 | Partially hot-tin-plated strip and a method and apparatus for its manufacture A ship that is partially hot-tin-plated with at least one metallic coating track extending in longitudinal direction on or both of its upper and lower surfaces and/or along one or both side edges. An intermetallic phase exists between the ship material an... | 01/27/1998 |
| 5513699 | Heat exchanger wall, in particular for spray vaporization A heat exchanger wall for the transfer of heat from one first medium on one side of the wall to a second medium to be evaporated on the other side of the wall, with this other side having integral, aligned distributor grooves for distributing the liquid p... | 05/07/1996 |
| 5490731 | Sleeve bearing with integrated lip seal The invention relates to a sleeve bearing provided with lip seals, which are each integrated into front areas of the sleeve bearing particularly for use in rough mixed friction operation. The lip seals each consist of a holding part, a support part and a ... | 02/13/1996 |
| 5355937 | Method and apparatus for the manufacture of a metal strip with near net shape A method and an apparatus for the continuous manufacture of a metal strip (1) with near net shape. The metal melt (6) is fed from a melt distributor (5) through a casting nozzle (15) onto a rotating, cooled conveyor belt (2) and solidified. In the operati... | 10/18/1994 |
| 5288457 | Copper-nickel-tin alloy for slide bearings A slide bearing comprising a copper-nickel-tin alloy consisting essentially of ______________________________________ 4-8% by wt nickel, 4-8% by wt tin, 0.005-1.0 by wt zinc, 0.005-0.5 by wt iron, 0.00... | 02/22/1994 |
| 4810468 | Copper-chromium-titanium-silicon-alloy The invention relates to a copper-chromium-titanium-silicon-alloy, which consists essentially of 0.10 to 0.50% chromiun; 0.01 to 0.25% titanium; silicon; the remainder being copper and the usual impurities, wherein the silicon content (a) is more than 0.1... | 03/07/1989 |
| 4734255 | Use of a copper-titanium-cobalt alloy as the material for electronic components The invention relates to the use of a copper-titanium-cobalt-alloy which consists of 0.05-0.6% titanium; 0.05-0.6% cobalt; remainder copper, whereby the cobalt is partially replaced by iron. Due to its excellent characteristics with respect to electrical ... | 03/29/1988 |
