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1.发明授权
公开(公告)号：US5074929A
公开(公告)日：1991-12-24
申请号：US399789
申请日：1989-08-28
CPC分类号： G01D5/147 , G01B7/003 , Y10T29/4902
摘要： A speed sensor is made by assembling a permanent magnet, a soft magnetic layer on the magnet, a magnetoresistive sensor element of the soft magnetic layer, and a toothed ferritic member mounted for movement past the sensor element. The permanent magnet is surface treated to form, in situ, the soft magnetic layer comprising a thin layer of high permeability, low coercivity material. An Nd-Fe-B alloy magnet is surface treated by a laser or electron beam to melt a thin layer which is cooled to resolidify into a soft magnetic material. Rapid cooling achieves an amorphous surface layer having the desired properties. Slow cooling results in the formation of alpha-iron grains which enhance the soft magnetic properties. Iron formation is aided by reacting with an oxidizing atmosphere. Iron alloying by adding iron powder to the molten layer is also discussed.
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公开(公告)号：US5283130A
公开(公告)日：1994-02-01
申请号：US788662
申请日：1991-11-06
CPC分类号： G06K1/125 , Y10T428/31993
摘要： A permanent magnet is heated in a pattern by a laser beam to a localized temperature above the Curie point or a temperature sufficient to reduce the magnet coercivity sufficiently for the field of the magnet or an external field to remagnetize the pattern in the reverse direction. Magnets so produced can have very high pole density, digital encoding and analog patterns having gradually varying local field strength.
摘要翻译： 永磁体通过激光束以图案加热到高于居里点的局部温度或足以使磁体矫顽磁力充分降低磁场或外场的温度，从而使反向图案再磁化。 如此制造的磁体可以具有非常高的极点密度，数字编码和具有逐渐变化的局部场强的模拟图案。
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公开(公告)号：US5492571A
公开(公告)日：1996-02-20
申请号：US140956
申请日：1993-10-25
申请人： Robert A. Frosch , Thomas A. Perry , John R. Bradley , Thaddeus Schroeder , Bruno P. B. Lequesne
发明人： Robert A. Frosch , Thomas A. Perry , John R. Bradley , Thaddeus Schroeder , Bruno P. B. Lequesne
IPC分类号： C21D1/04 , C21D1/09 , C21D1/34 , G01D5/249 , G01P3/487 , G06K1/12 , H01F1/03 , H01F1/057 , H02K1/27 , H02K15/03 , H01F1/032
CPC分类号： H02K15/03 , C21D1/04 , C21D1/34 , G01D5/249 , G01P3/487 , G06K1/125 , H01F1/0306 , H01F1/057 , H02K1/2733 , C21D1/09 , C21D2221/00 , Y10T29/49007
摘要： An article comprising first and second bodies of permanent magnet material, each of said first and second bodies consisting substantially of a substrate of permanent magnet material being magnetized substantially uniformly to a predetermined flux density in a range from zero flux to 100% flux saturation of the permanent magnet material; each of the first and second bodies also comprising a pattern of at least one affected volume in a surface of the body, wherein each affected volume has a magnetic flux density that varies from the substantially uniform predetermined flux density and wherein the first and second bodies are stacked and fixedly attached so that the pattern on each body aligns with the pattern on the other body, wherein at least one affected volume on the first body is aligned with at least one affected volume on the second body and wherein the aligned affected volumes comprise a pole detectable by a magnetic sensor.
摘要翻译： 一种包括永磁材料的第一和第二本体的制品，所述第一和第二主体中的每一个基本上由永久磁铁材料的基底组成，其基本均匀地磁化至预定的磁通密度，其范围为零通量至100％的磁通饱和度 永磁材料; 所述第一和第二主体中的每一个还包括在所述主体的表面中的至少一个受影响的体积的图案，其中每个受影响的体积具有从基本上均匀的预定通量密度变化的磁通密度，并且其中所述第一和第二主体是 堆叠并固定地附接，使得每个主体上的图案与另一个主体上的图案对准，其中第一主体上的至少一个受影响的体积与第二主体上的至少一个受影响的体积对准，并且其中对准的受影响体积包括 磁极可由磁传感器检测。
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公开(公告)号：US5091021A
公开(公告)日：1992-02-25
申请号：US589359
申请日：1990-09-28
IPC分类号： H01F7/02 , C21D1/04 , C21D1/09 , C21D1/34 , C21D8/12 , G01D5/249 , G01P3/487 , H01F1/03 , H01F1/057 , H01F13/00 , H02K1/27 , H02K15/03
CPC分类号： C21D1/04 , C21D1/34 , C21D8/1294 , G01D5/249 , G01P3/487 , H01F1/0306 , H01F1/057 , H02K1/2733 , H02K15/03 , C21D1/09 , C21D2221/00 , Y10S428/928 , Y10T428/12465
摘要： Nonmagnetized permanent magnet material is heated in a pattern by a laser beam to a localized temperature above the Curie point or a temperature sufficient to reduce the coercivity sufficiently for an external field to magnetize the pattern in the direction of the field. Magnets so produced can have very high pole density, digital encoding and analog patterns having gradually varying local field strength. Alternating pole magnets of this type can be used for stepper motor magnets.
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公开(公告)号：US5089060A
公开(公告)日：1992-02-18
申请号：US589352
申请日：1990-09-28
CPC分类号： G06K1/125 , Y10T428/31993
摘要： A permanent magnet is heated in a pattern by a laser beam to a localized temperature above the Curie point or a temperature sufficient to reduce the magnet coercivity sufficiently for the field of the magnet or an external field to remagnetize the pattern in the reverse direction. Magnets so produced can have very high pole density, digital encoding and analog patterns having gradually varying local field strength.
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公开(公告)号：US5631093A
公开(公告)日：1997-05-20
申请号：US789702
申请日：1991-11-08
IPC分类号： H01F7/02 , C21D1/04 , C21D1/09 , C21D1/34 , C21D8/12 , G01D5/249 , G01P3/487 , H01F1/03 , H01F1/057 , H01F13/00 , H02K1/27 , H02K15/03 , H01F1/032
CPC分类号： C21D1/04 , C21D1/34 , C21D8/1294 , G01D5/249 , G01P3/487 , H01F1/0306 , H01F1/057 , H02K1/2733 , H02K15/03 , C21D1/09 , C21D2221/00 , Y10S428/928 , Y10T428/12465
摘要： Nonmagnetized permanent magnet material is heated in a pattern by a laser beam to a localized temperature above the Curie point or a temperature sufficient to reduce the coercivity sufficiently for an external field to magnetize the pattern in the direction of the field. Magnets so produced can have very high pole density, digital encoding and analog patterns having gradually varying local field strength. Alternating pole magnets of this type can be used for stepper motor magnets.
摘要翻译： 非磁化永磁材料通过激光束以图案加热到高于居里点的局部温度或足以降低矫顽力以使外部磁场在场的方向上磁化图案的温度。 如此制造的磁体可以具有非常高的极点密度，数字编码和具有逐渐变化的局部场强的模拟图案。 这种类型的交流磁极可用于步进电机磁铁。
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公开(公告)号：US5570016A
公开(公告)日：1996-10-29
申请号：US252293
申请日：1994-06-01
申请人： Thaddeus Schroeder , Bruno P. B. Lequesne , Raymond O. Butler, Jr. , Anthony L. Marks , Thomas A. Perry , John R. Bradley
发明人： Thaddeus Schroeder , Bruno P. B. Lequesne , Raymond O. Butler, Jr. , Anthony L. Marks , Thomas A. Perry , John R. Bradley
CPC分类号： G01D5/2497 , G01B7/30 , G01D5/147
摘要： A method and apparatus for detecting an engine crankshaft angular position which provides for fast starting of the engine. A target wheel and sensor combination generate an analog signal which is convened into a 24 bit digital output which repeats every 360.degree. rotation of the crankshaft. Each bit represents a particular angular position of the crankshaft. Any 6 sequential bits in the repeating 24 bit digital output sequence form a unique pattern. By monitoring the first six bits generated (90.degree. of crankshaft rotation) during startup, a crankshaft angular position can be determined, thereby enabling fast starting of the engine.
摘要翻译： 一种用于检测发动机曲轴角位置的方法和装置，其提供发动机的快速启动。 目标轮和传感器组合产生模拟信号，该模拟信号被转换成24位数字输出，其重复曲轴每360度的旋转。 每个位表示曲轴的特定角度位置。 重复的24位数字输出序列中的任何6个连续位形成一个独特的模式。 通过监视启动时产生的前六位（曲轴旋转90°），可以确定曲轴角度位置，从而能够快速启动发动机。
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公开(公告)号：US5492572A
公开(公告)日：1996-02-20
申请号：US345055
申请日：1994-11-25
IPC分类号： C21D1/04 , C21D1/09 , C21D1/34 , G01D5/249 , G01P3/487 , G06K1/12 , H01F1/03 , H01F1/057 , H02K1/27 , H02K15/03 , H01F1/04
CPC分类号： H02K1/2733 , C21D1/04 , C21D1/34 , G01D5/249 , G01P3/487 , G06K1/125 , H01F1/0306 , H01F1/057 , H02K15/03 , C21D1/09 , C21D2221/00 , Y10T29/4902
摘要： A magnetized or unmagnetized body of a permanent magnet material is heated in a pattern by a laser beam to a temperature sufficient to lower the coercivity of selected heated regions of the pattern and exposed to a magnetic field to magnetize or to remagnetize the selected heated regions. A pattern guide is used in the process to densify the pattern. In the process, energy is directed through the pattern guide and onto the selected regions, while the pattern guide prevents or minimizes heating of unselected portions of the body. Magnets so produced can have very high pole density, digital encoding and analog patterns having gradually varying local field strength.
摘要翻译： 永磁材料的磁化或非磁化体通过激光束以图案加热至足以降低图案的选定加热区域的矫顽力并暴露于磁场以使磁化或使所选择的加热区域再磁化的温度。 在该过程中使用图案指南来致密化图案。 在该过程中，能量通过图案引导件引导到所选择的区域上，同时图案引导件防止或最小化身体的未选择部分的加热。 如此制造的磁体可以具有非常高的极点密度，数字编码和具有逐渐变化的局部场强的模拟图案。
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9.发明申请公开(公告)号：US20130186527A1
公开(公告)日：2013-07-25
申请号：US13354589
申请日：2012-01-20
申请人： John R. Bradley
发明人： John R. Bradley
摘要： The microstructure of a low alloy steel workpiece for cold forming may be beneficially modified by heating the workpiece to a temperature just above its austenite transformation temperature (Ac3 temperature). The steel workpiece is then cooled just below its Ac3 temperature to promote ferrite formation on and between the austenite grains. Heating and cooling, above and below the Ac3 temperature, is repeated a determined number of times to refine the austenite grains before the workpiece is quenched below its martensite transformation temperature to form a mixture of martensite with increased retained austenite. The workpiece may be further heated in its martensite region to increase the proportion of retained austenite before quenching the steel workpiece to an ambient temperature. The formability of the workpiece is improved, as is the strength of its formed shape.
摘要翻译： 用于冷成型的低合金钢工件的微观结构可以通过将工件加热到刚好高于其奥氏体转变温度（Ac 3温度）的温度来有利地进行改性。 然后将钢工件冷却到低于其Ac3温度，以促进在奥氏体晶粒之间和之间形成铁素体。 在Ac3温度以上和以下的加热和冷却重复确定次数，以在工件淬火低于其马氏体相变温度之前将奥氏体晶粒细化，以形成马氏体与增加的残余奥氏体的混合物。 工件可以在其马氏体区域进一步加热，以在将钢材工件淬火至环境温度之前增加残余奥氏体的比例。 工件的成型性也随其形成的强度而提高。
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公开(公告)号：US20100024503A1
公开(公告)日：2010-02-04
申请号：US12434703
申请日：2009-05-04
CPC分类号： B21D26/14 , B21D41/04 , Y10T29/49803
摘要： Articles are often formed from a tubular workpiece in a process which does not usefully shape the ends of the tube. In an embodiment of the invention, tube ends may be mechanically reduced in cross section and then expanded against a secondary forming surface(s) using an electromagnetic force to obtain desired shapes for the tube ends and minimize scrapping of workpiece material.
摘要翻译： 制品通常由管状工件形成，该工艺不会有效地塑造管的端部。 在本发明的一个实施例中，管端部可以在机械上减小横截面，然后使用电磁力使其相对于次级成形表面膨胀，以获得用于管端的所需形状并最小化工件材料的报废。
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