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公开(公告)号：US5951191A
公开(公告)日：1999-09-14
申请号：US986703
申请日：1997-12-08
CPC分类号： G01P1/00 , Y10T403/1616 , Y10T403/32532
摘要： A bracket and washer combination providing secure holding and positioning of a magnetic sensor, wherein an optimal air gap is automatically set as the washer is brought into a slot of the bracket due to facial interaction therebetween. In one embodiment, the sidewalls of the slot have teeth of predetermined pitch, while the washer has smooth sidewalls. In a second embodiment, the sidewalls of the washer have teeth of a predetermined pitch angle, while the sidewalls of the slot are smooth. The member having toothed sidewalls is formed of a material harder than the member having smooth sidewalls. The washer and slot are dimensioned so that the sidewalls of the washer tightly abut the sidewalls of the slot, wherein the teeth of the toothed sidewalls inscribe corresponding grooves into the smooth sidewalls as the washer is pressed into the slot along a transverse axis. Consequently, as the corresponding grooves are inscribed, the washer sidewalls are caused to move in relation to the slot sidewalls in a direction parallel to the pitch of the teeth, resulting in a relative movement between the washer and the bracket along a longitudinal axis. However, since the washer is affixed by a bolt so that it is constrained from moving along the longitudinal axis, the relative movement is provided by the bracket moving along the longitudinal axis in relation to the washer.
摘要翻译： 一种支架和垫圈组合，提供了一种磁性传感器的牢固的保持和定位，其中当由于它们之间的面部相互作用而将垫圈带入支架的槽中时，自动设定最佳气隙。 在一个实施例中，槽的侧壁具有预定间距的齿，而垫圈具有平滑的侧壁。 在第二实施例中，垫圈的侧壁具有预定间距角的齿，而槽的侧壁是平滑的。 具有齿形侧壁的构件由比具有平滑侧壁的构件更硬的材料形成。 垫圈和狭槽的尺寸设计成使得垫圈的侧壁紧密地邻接槽的侧壁，其中当垫圈沿着横向轴线压入槽中时，齿形侧壁的齿将相应的凹槽划分成平滑的侧壁。 因此，当相应的凹槽被内接时，使得垫圈侧壁相对于狭槽侧壁在平行于齿的间距的方向上移动，从而沿着纵向轴线在垫圈和托架之间相对移动。 然而，由于垫圈通过螺栓固定，使得其被限制为沿着纵向轴线移动，相对运动由托架相对于垫圈沿着纵向轴线移动。
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公开(公告)号：US5738345A
公开(公告)日：1998-04-14
申请号：US567381
申请日：1995-12-04
摘要： A device is provided which is capable of generating a surface that at least partially conforms to the contour of an article. The surface is defined by the ends of a number of threaded members which are supported within a suitable support structure. The threaded members are aligned so as to be substantially parallel to and threadably engaged with each other. As a result, rotation of an individual threaded member will cause that threaded member to be longitudinally moved relative to its adjacent threaded members and the support structure, without displacing an adjacent threaded member. The surface can be readily configured manually or automatically to serve as a die or mold cavity when the entire surface has been generated to conform to the entire contour of the article. Alternatively, the surface can be generated so as to provide a suitable fixture surface for supporting and securing a workpiece during a machining or welding operation. Due to its method of generation, the surface can be quickly and repeatedly reconfigured to conform to an article or workpiece having a completely different contour.
摘要翻译： 提供了能够产生至少部分地符合制品轮廓的表面的装置。 表面由多个螺纹构件的端部限定，这些螺纹构件被支撑在合适的支撑结构内。 螺纹构件被对准以便基本上平行于并且彼此螺纹接合。 结果，单个螺纹构件的旋转将导致螺纹构件相对于其相邻的螺纹构件和支撑结构纵向移动，而不会使相邻的螺纹构件移位。 当整个表面已被产生以符合制品的整个轮廓时，表面可以手动或自动地被轻易地配置成用作模具或模腔。 或者，可以产生表面，以便在加工或焊接操作期间提供用于支撑和固定工件的合适的固定表面。 由于其产生的方法，可以快速且重复地重新配置表面以符合具有完全不同轮廓的物品或工件。
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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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75.发明授权Three sensor rotational position and displacement detection apparatus with common mode noise rejection 失效三传感器旋转位置和位移检测装置，共模噪声抑制
公开(公告)号：US5568048A
公开(公告)日：1996-10-22
申请号：US355748
申请日：1994-12-14
CPC分类号： G01D5/145 , G01D5/2457 , G01R33/09
摘要： Position of a rotatable automotive part is sensed with a trio of magnetic field intensity sensors disposed adjacent a ring that rotates with the automotive part, the ring comprising alternating permanent magnet sections with at least one localized magnetic field depression corresponding to a synchronization position of the part wherein the sensors are spaced along the direction of ring rotation so that the relative phase between the output signals of a first pair of the sensors as indicated by the relative output signal magnitude indicates incremental displacement of the part, and so that a significant difference in magnitude between the output signal of a second pair of the sensors indicates the synchronization position.
摘要翻译： 可旋转的汽车部件的位置用设置在与汽车部件一起旋转的环附近设置的三个磁场强度传感器来感测，所述环包括具有至少一个局部磁场凹陷的交替永磁体部分，该至少一个局部磁场凹陷对应于部件的同步位置 其中传感器沿着环形旋转的方向间隔开，使得由相对输出信号幅度指示的第一对传感器的输出信号之间的相对相位表示该部件的增量位移，并且使得幅度有显着的差异 在第二对传感器的输出信号之间指示同步位置。
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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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77.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：US4924696A
公开(公告)日：1990-05-15
申请号：US384375
申请日：1989-07-24
申请人： Allen G. Schroeder , Thaddeus Schroeder , Sam M. Karadsheh , Janet S. Goings , Ronald T. Golebiewski
发明人： Allen G. Schroeder , Thaddeus Schroeder , Sam M. Karadsheh , Janet S. Goings , Ronald T. Golebiewski
摘要： A noncontacting automotive steering angle sensor involving the application of a two element magnetoresistive sensor to an otherwise conventional rack and pinion steering system. The rack is directly coupled to the steerable wheels, and the sensor is integrally mounted in a spring-loaded rack contacting mechanism (contact shoe) used to maintain a meshing engagement between the pinion and the rack. A variable permeability surface is formed on the surface of the rack along the travel path of the sensor such that axial movement of the rack differentially varies the magnetic flux density detected by each element of the sensor. A detector circuit comprising a bridge or simple voltage divider responsive to the differential resistances of the sensor elements develops an electrical signal indicative of the rack position.
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公开(公告)号：US4742332A
公开(公告)日：1988-05-03
申请号：US37216
申请日：1987-04-10
CPC分类号： F02D41/0097 , F02P7/0775 , G01P3/489 , H03M1/308
摘要： A magnetic shaft angle encoder uses a gear or toothed wheel for inducing periodic electrical pulses in an inductive pickup. The teeth are evenly spaced and every tooth generates a signal as it passes the pickup. A reference tooth is slightly shorter than the others so that the period of the pulse it generates is shorter than the others and is easily detected to obtain an accurate shaft index position. Since a pulse is produced for every tooth, the pulses provide an excellent means of instantaneous speed sensing.
摘要翻译： 磁轴角度编码器使用齿轮或齿轮来感应感应拾取器中的周期性电脉冲。 齿均匀分布，每个齿通过拾音器时产生一个信号。 参考齿比其他齿短一些，使得其产生的脉冲的周期比其他脉冲的周期短，并且容易检测以获得精确的轴索引位置。 由于为每个齿产生脉冲，脉冲提供了一种极好的瞬时速度感测手段。
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公开(公告)号：US3950741A
公开(公告)日：1976-04-13
申请号：US518519
申请日：1974-10-29
申请人： Thaddeus Schroeder
发明人： Thaddeus Schroeder
CPC分类号： B60Q11/00
摘要： The load monitoring circuit includes a solid state current sensor including a positive temperature coefficient (PTC) resistor and a heater resistor. The heater resistor is connected in series with the load and in parallel with the PTC resistor. A third resistor is connected in series with the PTC to form a voltage divider. Current drawn by the load through the heater resistor raises the temperature of the PTC resistor above its anomaly temperature causing the voltage at the divider junction to abruptly switch from a high to a low state to indicate the status of the load.
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