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1. 发明授权

US06278087B1 Ceramic igniters and methods for using and producing same 有权
标题翻译：陶瓷点火器及其使用和生产方法
公开(公告)号：US06278087B1
公开(公告)日：2001-08-21
申请号：US09491170
申请日：2000-01-25
申请人： Craig A. Willkens , James M. Olson , Scott M. Hamel
发明人： Craig A. Willkens , James M. Olson , Scott M. Hamel
IPC分类号： H05B300
CPC分类号： F23Q7/22
摘要： Ceramic igniters are provided that comprise two cold zones with an interposed hot zone, the hot zone having an electrical path length of from 0.51 cm to about 2 cm. Igniters of the invention can effectively diffuse power density throughout the igniter hot zone region, without producing isolated temperature gradients which can lead to premature igniter degradation and failure. The invention also provides new methods for forming ceramic igniters.
摘要翻译：提供陶瓷点火器，其包括具有插入的热区域的两个冷区域，热区域具有从0.51cm至约2cm的电路径长度。本发明的点火器可以有效地扩散整个点火器热区域的功率密度，而不会产生隔离的温度梯度，这可能导致过早的点火器退化和失效。本发明还提供了形成陶瓷点火器的新方法。

2. 发明申请

US20080116192A1 Injection molding of ceramic elements 审中-公开
标题翻译：陶瓷元件注塑
公开(公告)号：US20080116192A1
公开(公告)日：2008-05-22
申请号：US11906759
申请日：2007-10-02
申请人： Suresh Annavarapu , Taehwan Yu , Norman P. Arsenault , Craig A. Willkens
发明人： Suresh Annavarapu , Taehwan Yu , Norman P. Arsenault , Craig A. Willkens
IPC分类号： F23Q7/22 , H05B3/48 , H05B3/42 , H05B3/00
CPC分类号： F23Q7/22 , H05B3/141 , H05B3/48 , H05B2203/027 , Y10T29/49083
摘要： The invention provides new methods for manufacture ceramic resistive heating elements that include forming a heating element body comprising comprises two or more regions of differing resistivity, and processing a portion of the element body to form a heating element. Heating elements such as igniters and glow plugs also are provided obtainable from fabrication methods of the invention.
摘要翻译：本发明提供了用于制造陶瓷电阻加热元件的新方法，其包括形成加热元件主体，其包括两个或更多个不同电阻率的区域，并且处理元件主体的一部分以形成加热元件。也可以通过本发明的制造方法提供加热元件，例如点火器和电热塞。

3. 发明授权

US5892201A Method of heating a stovetop range using a ceramic igniter 失效
标题翻译：使用陶瓷点火器加热炉灶范围的方法
公开(公告)号：US5892201A
公开(公告)日：1999-04-06
申请号：US122150
申请日：1998-07-24
申请人： Dean Croucher , Craig A. Willkens , Linda S. Bateman
发明人： Dean Croucher , Craig A. Willkens , Linda S. Bateman
IPC分类号： F23Q7/00 , F23Q7/22 , H05B3/14
CPC分类号： F23Q7/22
摘要： The present invention relates a ceramic igniter comprising:a) a pair of electrically conductive portions, each portion having a first end,b) a hot zone disposed between and in electrical connection with each of the first ends of the electrically conductive portions, the hot zone having an electrical path length of less than 0.5 cm, andc) an electrically non-conductive heat sink material contacting the hot zone.
摘要翻译：本发明涉及一种陶瓷点火器，包括：a）一对导电部分，每个部分具有第一端，b）设置在导电部分的每个第一端之间并与之电连接的热区，热的电路长度小于0.5cm的区域，以及c）与热区接触的不导电的散热材料。

4. 发明授权

US5786565A Match head ceramic igniter and method of using same 失效
标题翻译：匹配头陶瓷点火器及其使用方法
公开(公告)号：US5786565A
公开(公告)日：1998-07-28
申请号：US789033
申请日：1997-01-27
申请人： Craig A. Willkens , Linda S. Bateman
发明人： Craig A. Willkens , Linda S. Bateman
IPC分类号： F23Q7/00 , F23Q7/22 , H05B3/14 , H05B3/10
CPC分类号： F23Q7/22
摘要： A ceramic igniter comprising: a) a pair of electrically conductive portions, each portion having a first end, b) a hot zone disposed between and in electrical connection with each of the first ends of the electrically conductive portions, the hot zone having an electrical path length of less than 0.5 cm, and c) an electrically non-conductive heat sink material contacting the hot zone.
摘要翻译：一种陶瓷点火器，包括：a）一对导电部分，每个部分具有第一端，b）设置在所述导电部分的每个所述第一端之间并与之电连接的热区，所述热区具有电气路径长度小于0.5cm，以及c）与热区接触的不导电的散热材料。

5. 发明授权

US5801361A Ceramic igniter with hot zone thickness of 0.019 inches or less 失效
标题翻译：陶瓷点火器，热区厚度为0.019英寸或更小
公开(公告)号：US5801361A
公开(公告)日：1998-09-01
申请号：US816949
申请日：1997-02-20
申请人： Craig A. Willkens , Linda S. Bateman
发明人： Craig A. Willkens , Linda S. Bateman
IPC分类号： F23Q7/22 , H05B3/14 , H05B3/00 , H01B1/18
CPC分类号： F23Q7/22 , H05B3/141 , H05B2203/027
摘要： A ceramic igniter comprises a pair of conductive ends, a hot zone disposed between the conductive ends, the hot zone having a density of at least about 95% of theoretical density and a composition comprising: (a) between about 50 and about 80 vol % of an electrically insulating material selected from the group consisting of aluminum nitride, boron nitride, silicon nitride, and mixtures thereof. (b) between about 10 and about 45 vol % of a semiconductive material selected from the group consisting of silicon carbide and boron carbide, and (c) between about 5 and about 25 vol % of a metallic conductor selected from the group consisting of molybdenum disilicide, tungsten disilicide, titanium nitride, and mixtures thereof, and a support upon which the hot zone is disposed, wherein at least a portion of the hot zone has a thickness of no more than 0.019".
摘要翻译：陶瓷点火器包括一对导电端，设置在导电端之间的热区，热区具有至少约95％的理论密度的密度和包含以下组成的组合物：（a）约50至约80体积％选自氮化铝，氮化硼，氮化硅及其混合物的电绝缘材料。（b）约10至约45vol％的选自碳化硅和碳化硼的半导体材料，和（c）约5至约25体积％的金属导体，其选自钼二硅化物，二硅化钨，氮化钛及其混合物，以及在其上设置热区的载体，其中至少一部分热区具有不大于0.019“的厚度。

6. 发明授权

US5759481A Silicon nitride having a high tensile strength 失效
标题翻译：具有高拉伸强度的氮化硅
公开(公告)号：US5759481A
公开(公告)日：1998-06-02
申请号：US739107
申请日：1996-10-25
申请人： Vimal K. Pujari , Dennis M. Tracey , Michael R. Foley , Norman I. Paille , Paul J. Pelletier , Lenny C. Sales , Craig A. Willkens , Russell L. Yeckley
发明人： Vimal K. Pujari , Dennis M. Tracey , Michael R. Foley , Norman I. Paille , Paul J. Pelletier , Lenny C. Sales , Craig A. Willkens , Russell L. Yeckley
IPC分类号： C04B35/593 , C04B41/00 , C04B41/80 , C04B35/584
CPC分类号： C04B41/009 , C04B35/593 , C04B41/0072 , C04B41/80
摘要： A ceramic body comprising at least about 80 w/o silicon nitride and having a mean tensile strength of at least about 800 MPa.
摘要翻译：一种陶瓷体，其包含至少约80w / o的氮化硅并具有至少约800MPa的平均拉伸强度。

7. 发明授权

US5510304A Coarse reaction bonded silicon nitride 失效
标题翻译：粗反应结合氮化硅
公开(公告)号：US5510304A
公开(公告)日：1996-04-23
申请号：US305640
申请日：1994-09-14
申请人： Craig A. Willkens
发明人： Craig A. Willkens
IPC分类号： C04B35/591 , C09K3/14
CPC分类号： C04B35/591 , C09K3/1409
摘要： A ceramic comprising:a) between 20 w/o and 90 w/o unnecked composite grains comprising:i) between 5 w/o and 100 w/o silicon nitride, andii)between 0 w/o and 95 w/o free silicon,said composite grains having lengths of at least 50 microns and widths of at least 10 microns, andb) between 10 w/o and 80 w/o matrix grains having lengths of less than 20 microns.
摘要翻译：一种陶瓷，其包括：a）20w / o至90w / o的不粘合复合颗粒，其包含：i）5w / o和100w / o氮化硅之间，以及ii）0w / o至95w / o的游离硅，所述复合晶粒具有至少50微米的长度和至少10微米的宽度，以及b）长度小于20微米的10w / o至80w / o的基体晶粒。

8. 发明授权

US5061416A Process for the manufacture of friable silicon nitride bodies 失效
标题翻译：用于制造易碎氮化硅体的方法
公开(公告)号：US5061416A
公开(公告)日：1991-10-29
申请号：US428710
申请日：1989-10-30
申请人： Craig A. Willkens , Normand D. Corbin , Brian J. Caprera
发明人： Craig A. Willkens , Normand D. Corbin , Brian J. Caprera
IPC分类号： B02C19/18 , C01B21/068 , C04B35/626
CPC分类号： C01B21/0687 , C01P2004/20 , C01P2006/10
摘要： A friable silicon nitride body is prepared by infiltrating a non-friable silicon nitride body with a fluid which expands upon freezing, rapidly freezing the fluid, and thawing the frozen fluid. Silicon nitride flakes and chunks obtained with only light pressure on the friable body may then be final milled to a desired particle size more rapidly and with less energy input than with conventionally processed silicon nitride. The silicon nitride body may have a higher density than has previously been used to prepare silicon nitride powders, thereby preventing the generation of potentially hazardous whiskers in the final powder product.
摘要翻译：通过用冷冻时膨胀的流体渗透非脆性氮化硅体，快速冷冻流体，解冻冷冻流体，制备脆性氮化硅体。然后可以在易碎体上仅用轻微的压力获得的氮化硅薄片和块可以比用常规处理的氮化硅更快地并且以更少的能量输入被最终研磨成所需的粒径。氮化硅体可以具有比以前用于制备氮化硅粉末的更高的密度，从而防止在最终粉末产品中产生潜在危险的晶须。

9. 发明授权

US5004544A Reaction bonded silicon nitride filtration membranes 失效
标题翻译：反应结合氮化硅过滤膜
公开(公告)号：US5004544A
公开(公告)日：1991-04-02
申请号：US434651
申请日：1989-11-13
申请人： Robert A. Hay , Craig A. Willkens , Arsenault, Normand P.
发明人： Robert A. Hay , Craig A. Willkens , Arsenault, Normand P.
IPC分类号： B01D69/04 , B01D71/02 , C04B41/50 , C04B41/87
CPC分类号： B01D69/125 , B01D63/062 , B01D67/0046 , B01D71/02 , C04B41/009 , C04B41/5066 , C04B41/87 , B01D2325/02 , B01D2325/04 , C04B2111/00801
摘要： Strong and durable silicon nitride filtration membranes with effective separating layers having effective pore diameters less than about 1 micron are produced by depositing a source of silicon onto a porous microfilter support, removing any liquid used in the depositing, and subjecting the silicon source to nitridation conditions. Suitable sources of silicon include silicon per se and silica. When silica is used, a suitable reducing agent is deposited therewith to reduce the silica to silicon in situ.

10. 发明授权

US4885199A Fiber-reinforced silicon nitride composite ceramics 失效
标题翻译：纤维增强氮化硅复合陶瓷
公开(公告)号：US4885199A
公开(公告)日：1989-12-05
申请号：US935652
申请日：1986-11-26
申请人： Normand D. Corbin , Craig A. Willkens
发明人： Normand D. Corbin , Craig A. Willkens
IPC分类号： C04B35/80
CPC分类号： C04B35/806 , Y10T428/24124 , Y10T428/24132 , Y10T428/24942 , Y10T428/249929 , Y10T428/249969 , Y10T428/249986 , Y10T428/26 , Y10T428/265
摘要： Tough composites of polymer derived silicon carbide fibers in silicon nitride matrices, especially reaction bonded silicon nitride matrices, can be made by precoating the fibers with pyrolytic carbon and controlling the nitridation or other process which forms the silicon nitride matrix so that a thickness of at least 5 nanometers of carbon remains in the composite after it is formed. Failure of such composites is non-catastrophic. Alternatively, with at least some specific types of polymer derived silicon carbide fibers, composites with non-catastrophic failure can be made by controlling the nitriding conditions to produce an essentially void space around the fibers in the final composites. As still another alternative, the space around the fibers may be partially filled with silicon nitride whiskers generated during the nitridation process.
摘要翻译：聚合物衍生的碳化硅纤维在氮化硅基体中的韧性复合材料，特别是反应键合的氮化硅基体可以通过用热解碳预涂纤维并控制形成氮化硅基体的氮化或其它工艺，从而至少形成厚度在形成复合材料后，5纳米的碳残留在复合材料中。这种复合材料的失效是非灾难性的。或者，通过至少一些特定类型的聚合物衍生的碳化硅纤维，可以通过控制氮化条件在最终复合材料中在纤维周围产生基本上空隙的空间来制备具有非灾难性故障的复合材料。作为另一替代方案，纤维周围的空间可以部分地填充在氮化过程中产生的氮化硅晶须。

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