Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 8114226 | Wall mountable holder A holder having a baseplate with a tang extending rearwardly therefrom, a plurality of openings for receiving fasteners and a plurality of legs extending from the baseplate, the tang being heat treated or work hardened to harden the tang and facilitate its detachmen... | 02/14/2012 |
| 8075714 | Localized induction heating for residual stress optimization An apparatus for the heat-treating of a heat-hardenable steel cruciform article having a weld seam includes a heating element to heat the weld seam to a point that an austenitic transformation occurs, and a quenching chamber to cool the weld seam, causing the format... | 12/13/2011 |
| 8062437 | Thermal forming of refractory alloy surgical needles and fixture and apparatus A method of thermal forming of refractory alloy suture needles is disclosed. Needle blanks made from refractory alloys are used to form surgical needles, which are heated to a temperature above the ductile to brittle transition temperature but below the recrystalliz... | 11/22/2011 |
| 7998289 | Press-hardened part and method for the production thereof To produce a metallic shaped part (1), in particular a vehicle body part, from a semifinished product (2) made of an unhardened hot-workable steel sheet, first of all the semifinished product (2) is formed by a cold-forming method, in particular... | 08/16/2011 |
| 7857919 | Process for producing steel product and production facility therefor The present invention provides a method of manufacturing a steel product, comprising the step of heat treating a steel product having been subjected to quenching or accelerated cooling on a hot rolling line after hot rolling to pass the steel product through a plura... | 12/28/2010 |
| 7740722 | Steel for use in high strength pinion shaft and manufacturing method thereof A steel for use in high strength pinion shaft which is not refined and used by applying high frequency hardening, with less occurrence of peeling during hobbing, having high surface hardness, impact value and torsional strength after high frequency hardening, and wi... | 06/22/2010 |
| 7678207 | Steel product for induction hardening, induction-hardened member using the same, and methods producing them We provide a steel product that includes, by mass %, C: 0.35-0.7%, Si: 0.30-1.1%, Mn: 0.2-2.0%, Al: 0.005-0.25%, Ti: 0.005-0.1%, Mo: 0.05-0.6%, B: 0.0003-0.006%, S: 0.06% or less, P: 0.02% or less, Cr: 0.2% or less, and the balance Fe and inevitable impurities, and ... | 03/16/2010 |
| 7638005 | Track bushing and method and apparatus for producing the same Quenched layers are formed without irregularities on the inner circumferential surface of a track bushing having a small inside diameter or on the inner circumferential surfaces of two or more track bushings which are subjected to quenching in an overlapped conditio... | 12/29/2009 |
| 7544258 | Method of fabricating pressed components A simpler and less expensive method of fabricating pressed components from sheet steel that can be heat treated while inside the press, whereby the material is heated to above its transformation point Ac3, pressed, and cooled, controlled, to below its crystal... | 06/09/2009 |
| 7422643 | Rolling element and method of producing the same There is provided an inexpensive rolling element used under high interface pressure such as induction hardened gears, the rolling element being improved in the seizure resistance of its tooth flanks and having a temper hardness of HRC 50 or more at 300° C. To this ... | 09/09/2008 |
| 7337541 | Automatic clasp for wristwatch strap A clasp and a production method thereof. The inventive clasp includes at least one main element (1) and at least one element (3) which pivots in relation to the main element. The clasp is characterised in that each of the aforementioned elements (1,... | 03/04/2008 |
| 7334546 | Cylinder liner A ductile repair cylinder liner for a diesel engine, the cylinder liner having an additional cooling groove with a parabolic varying cross-section machined into the outer surface of the cylinder liner immediately below the radially extending locating flange for the ... | 02/26/2008 |
| 7322261 | Method for manufacturing wrench handle with pressed indentation section A method for manufacturing a wrench handle includes preheating a work piece made of metal, with a layer of carbon scale being generated on the work piece during preheating. The preheated work piece is forged/pressed to form a wrench handle, with the carbon scale on ... | 01/29/2008 |
| 7306684 | Crawler bushing and method and device for producing the same Quenched layers are formed without irregularities on the inner circumferential surface of a track bushing having a small inside diameter or on the inner circumferential surfaces of two or more track bushings which are subjected to quenching in an overlapped conditio... | 12/11/2007 |
| 7262392 | Uniform thermal processing by internal impedance heating of elongated substrates An elongated substrate may be heated in a roll processing system. At least a portion of the elongated substrate is loaded into the roll processing system. A sufficient electrical current is caused to flow in the portion of the elongated substrate to heat the portion... | 08/28/2007 |
| 7247099 | Screw with a partially hardened functional tip and process for the production thereof In a process for the production of a screw comprising a low-alloy carbon steel, having a head, an adjoining holding portion and a functional tip which, in the outer region of limited radial depth, is of a greater hardness than the holding portion, in which the screw... | 07/24/2007 |
| 7220327 | Kick-down drum material and method of manufacturing the same Disclosed is a material of a kick-down drum comprising fine ferrite and microdispersion spheroidized cementite for an automobile also disclosed is a method for manufacturing the kick-down drum material. The kick-down drum of this invention can greatly improve harden... | 05/22/2007 |
| 7162798 | Ported engine cylinder liner with selectively laser-hardened and induction-hardened bore Selective laser and induction hardening are applied to areas of a water jacketed engine cylinder liner to provide improved resistance to scuffing resulting from the rubbing contact of the walls and piston rings of an associated piston. An upper bore portion and port... | 01/16/2007 |
| 7161124 | Thermal and high magnetic field treatment of materials and associated apparatus An apparatus and method for altering characteristics, such as can include structural, magnetic, electrical, optical or acoustical characteristics, of an electrically-conductive workpiece utilizes a magnetic field within which the workpiece is positionable and scheme... | 01/09/2007 |
| 7147729 | Method and apparatus for induction heat treating electrical contacts A method and apparatus are provided in accordance with embodiments of the present invention for heat-treating electrical contacts. The method and apparatus include plating a core wire with at least one conductive coating to form an electrical contact that experience... | 12/12/2006 |
| 7145115 | Apparatus for hardening a cylindrical bearing on a shaft by means of induction heating utilizing an elastic element An apparatus for hardening cylindrical bearing locations on a shaft, in particular a crankshaft, in which transition radii to the adjacent shaft parts are of undercut design, is provided with a heating unit, which is connected to a power supply, and with an inductor... | 12/05/2006 |
| 7041181 | Coated steel part with regions of different ductility A hardenable steel workpiece having two regions is first hardened so that both regions are of generally the same low ductility. Then only one of the regions is hot coated so as to increase the ductility of the one region while not heating and changing the ductility ... | 05/09/2006 |
| 7037383 | Process for producing a component from metal A process for producing a component of metal includes a) carrying out a heat treatment to harden the component, which ends with a heating process, especially with a tempering or microstructural transformation process, at a given temperature (TE); b) carry... | 05/02/2006 |
| 7028404 | Apparatus and method of manufacturing a vehicle frame assembly An apparatus and method for manufacturing a vehicle frame component allow a preliminary heat treatment process to be performed in a relatively quick and easy manner so as to facilitate the subsequent performance of a bending or other deforming process. Initially, a ... | 04/18/2006 |
| 6994350 | Crush zone and method for introducing crush zone into vehicle structure The present invention involves a method to produce crush zones in aluminum structures using controlled application of retrogression heat treatment. Selected areas of a tubular rail are retrogression heat treated to locally lower the tensile yield strength. As a resu... | 02/07/2006 |
| 6963057 | Simultaneous induction heating of multiple workpieces Multiple workpieces are inductively heated by passing them through one or more induction heating coils. Passage of a section of each workpiece through a coil may oscillate in the forward and reverse directions, independent of the movement of the other workpieces, on... | 11/08/2005 |
| 6952067 | Rotary electric machine and a method of producing the same A surface of a commutator 5 is rubbed by a shakedown brush 21 other than ordinary brushes 11 to produce a carbon coat, whereby a shakedown process can be reduced or abolished. ... | 10/04/2005 |
| 6939418 | Process for the thermomechanical treatment of steel A process for thermomechanical treatment of steel for torsionally-strained spring elements, the initial material being heated with a heating rate of at least 50 K/s and austenitized, and then, being formed in at least one forming step with the formed product being q... | 09/06/2005 |
| 6918224 | Heat treatment strategically strengthened door beam A method of forming a vehicle component, particularly an elongated impact beam, having an open section structure, in a manner to provide predetermined strategically strengthened portions, comprising the steps of cold forming unhardened steel into a workpiece having ... | 07/19/2005 |
| 6919545 | Device for advancing even distribution of high cycle wave magnetism The present invention of a device for advancing even distribution of high cycle wave magnetism uses a coil body having characteristics of conducting high cycle wave magnetism energy. The coil body is coiled in such a way that appears to have undulating distributed l... | 07/19/2005 |
| 6884975 | Localized stress relief by induction heating A system and method inductively heats and stress relieves a weld joint area having a stress induced zone. A susceptor assembly is positioned over the stress induced zone. The susceptor assembly includes susceptor sheets manufactured to operate at different, preselec... | 04/26/2005 |
| 6855217 | Method of baking treatment of steel product parts The present invention relates to a method of baking treatment of steel product parts using a high frequency or ultra-high frequency for preventing delayed fracture from occurring due to diffusive hydrogen occluded in steel parts, for example, screws, bolts and the l... | 02/15/2005 |
| 6843866 | Process for producing wear-resistant surface layers Process for the effective production of very wear-resistant layers in the thickness range of 0.2 to approx. 3 mm by way of inductively supported surface layer modification. It can be used particularly advantageously for the protection of components of hardenable ste... | 01/18/2005 |
| 6811622 | Semifinished and finished products made of austenitic special steel and method for the production thereof The invention relates to semifinished and finished products made from special corrosion-resistant precipitation-hardened austenitic steel containing a large amount of intersticially dissolved nitrogen, comprising substantially smooth surfaces. The invention also rel... | 11/02/2004 |
| 6797084 | Method of manufacturing case hardened journal cross for use in a universal joint An apparatus for manufacturing a case hardened journal cross includes an inductor having an open side to allow the journal cross to be inserted and withdrawn from the induction process with relative ease. The conductive frame of the inductor is shaped in a cross-lik... | 09/28/2004 |
| 6765181 | Inductor assembly An apparatus and process are provided for induction heat treatment of electrically conductive workpieces. The inductor assembly is formed from a single piece inductor that utilizes an electrically non-conductive top, side and bottom frames to hold flux concentrators... | 07/20/2004 |
| 6677561 | Coil for induction heating of a strip or another elongate metal workpiece The invention relates to a coil to be used in transverse flux induction heating of an object in the form of a metal strip or another elongate metal workpiece. The coil contains at least one pair of loops of conductors, which are non-symmetrically position... | 01/13/2004 |
| 6635856 | Billet induction heating A plurality of billets are inductively heated in a staged process wherein the output current of a power supply is repeatedly time shared among a plurality of induction coils within which the plurality of billets have been placed. The time periods of the a... | 10/21/2003 |
| 6576877 | Induction processing with the aid of a conductive shield A method for induction heating a workpiece made of a material such as ferrous material or alloy is carried out by placing a non-magnetic conductive shield in proximity to a current concentrating surface of the workpiece and exposing the workpiece with a s... | 06/10/2003 |
| 6506269 | High-strength and high-conductivity Cu-(Ni, Co, Fe)-Si copper alloy for use in leadframes and method of making the same A high-strength and high-conductivity copper alloy is disclosed which contains essentially of: (a) from 0.5 to 2.5 wt % of Ni; (b) from 0.5 to 2.5 wt % of Co; (c) from 0.5 to 0.8 wt % of Si; (d) from 0.05 to 0.15 wt % of either Mg or P or both; and (e) th... | 01/14/2003 |
