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1. 发明授权

US06454993B1 Manufacturing technique for multi-layered structure with magnet using an extrusion process 失效
公开(公告)号：US06454993B1
公开(公告)日：2002-09-24
申请号：US09567110
申请日：2000-05-08
申请人： Madhu Sudan Chatterjee , Andrzej Marian Pawlak , Vinod K. Sikka
发明人： Madhu Sudan Chatterjee , Andrzej Marian Pawlak , Vinod K. Sikka
IPC分类号： B22F320
CPC分类号： H01F1/0576 , H01F41/0266 , H01F41/0273 , Y10T428/12028 , Y10T428/12465 , Y10T428/12972
摘要： A method is provided for manufacturing a multi-layered magnetic rod in which a steel powder is reduced and extruded through a die. To improve the magnetic properties, a layer of rare earth magnetic power formed around the low alloy steel in the extruder chamber. A second layer of coating formed around the rare earth powder and the three layers are co-extruded through the die to produce a layered rod having improved magnetic properties. The resulting magnetic rod may be machined using conventional machining methods.

2. 发明授权

US06627326B2 Manufacturing technique for multi-layered structure with magnet using an extrusion process 失效
标题翻译：使用挤出工艺的磁体多层结构的制造技术
公开(公告)号：US06627326B2
公开(公告)日：2003-09-30
申请号：US10202176
申请日：2002-07-24
申请人： Madhu Sudan Chatterjee , Andrzej Marian Pawlak , Vinod K. Sikka
发明人： Madhu Sudan Chatterjee , Andrzej Marian Pawlak , Vinod K. Sikka
IPC分类号： B22F702
CPC分类号： H01F1/0576 , H01F41/0266 , H01F41/0273 , Y10T428/12028 , Y10T428/12465 , Y10T428/12972
摘要： An extruded magnetic structure includes a first layer of low alloy steel compressed powder and a second layer of rare earth metal compressed powder circumferentially disposed around the first layer. A third layer of compressed powder may be circumferentially disposed around the second layer.
摘要翻译：挤压磁性结构包括第一层低合金钢压缩粉末和围绕第一层周向设置的第二稀土金属压缩粉末层。第三层压缩粉末可围绕第二层周向设置。

3. 发明授权

US06400899B1 Ring assembly manufacturing apparatus and method 失效
标题翻译：环组件制造装置及方法
公开(公告)号：US06400899B1
公开(公告)日：2002-06-04
申请号：US09670669
申请日：2000-09-27
申请人： Madhu Sudan Chatterjee , Steven J Schultz , David E. Witucki , Charles T Blue
发明人： Madhu Sudan Chatterjee , Steven J Schultz , David E. Witucki , Charles T Blue
IPC分类号： H05B300
CPC分类号： B29C65/66 , B23P11/025 , B29C65/56 , B29C65/565 , B29C66/0342 , B29C66/54 , B29C66/71 , B29C66/742 , B29C66/8242 , B29C66/8322 , B29C66/91221 , B29C66/91411 , B29C66/91443 , B29C66/9161 , B29C2035/0822 , B29L2015/003 , B29L2015/006 , Y10T29/49552 , Y10T29/49865 , B29K2077/00
摘要： A ring assembly manufacturing apparatus (30) and method provides heat to a ring (216) such as a polymeric ring from an infrared source (48). A ring assembly (214) includes a ring (216) and a hub (218) within the ring. The ring (216) is traversed into a chamber (46) such that the ring (216) is exposed to infrared energy from the infrared source (48). The infrared energy causes the ring (216) to expand thereby facilitating assembly with the hub (218).
摘要翻译：环组件制造装置（30）和方法从红外源（48）向诸如聚合物环的环（216）提供热量。环组件（214）包括环内的环（216）和轮毂（218）。环（216）穿过室（46），使得环（216）暴露于来自红外源（48）的红外能量。红外能量导致环（216）膨胀，从而便于与毂（218）组装。

4. 发明授权

US08475610B2 Induction hardening system and method 有权
标题翻译：感应淬火系统及方法
公开(公告)号：US08475610B2
公开(公告)日：2013-07-02
申请号：US12898432
申请日：2010-10-05
申请人： Madhu Sudan Chatterjee , William Irwin Stuehr
发明人： Madhu Sudan Chatterjee , William Irwin Stuehr
IPC分类号： C21D9/22 , C21D9/24 , H05B6/02 , H05B6/10 , H05B6/36
CPC分类号： C21D9/32 , C21D1/10 , C21D1/42 , C21D1/62 , H05B6/101 , H05B6/405 , Y02P10/253
摘要： A system and method of induction heat treating a gear includes a workstation. The workstation has a power source, an inductor coil, and a rotational mechanism. The gear is induction heat treated at a first portion of the gear and a second portion of the gear remains untreated by induction hardening. The gear has an inner surface. The inner surface includes the first portion and the second portion. The first portion has a first width. The second portion has a second width. The inductor coil includes at least one heating loop and at least one non-heating loop. The inductor coil is energized to a predetermined frequency to create an alternating magnetic field, where the alternating magnetic field developed in the heating loop induces an eddy current in the first portion of the gear.
摘要翻译：感应加热齿轮的系统和方法包括工作站。工作站具有电源，电感线圈和旋转机构。齿轮在齿轮的第一部分进行感应加热处理，齿轮的第二部分通过感应淬火保持未经处理。齿轮具有内表面。内表面包括第一部分和第二部分。第一部分具有第一宽度。第二部分具有第二宽度。电感线圈包括至少一个加热回路和至少一个非加热回路。电感线圈被激励到预定频率以产生交变磁场，其中在加热回路中产生的交变磁场在齿轮的第一部分中引起涡流。

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