公开(公告)号：US6074209A

公开(公告)日：2000-06-13

申请号：US166881

申请日：1998-10-06

申请人： William B. Johnson

发明人： William B. Johnson

IPC分类号： A61C1/08 ,  A61C5/02

CPC分类号： A61C5/023 ,  A61C5/025

摘要： An improved file for use in the endodontic preparation of a root canal, the file having a handle portion at one end and an active working portion tapering toward the distal end, the active portion having an external surface with at least one helical flute forming a helical scraping edge and, preferably, an axially adjacent land, the working portion having areas or zones of reduced surfaces that contact root canal surfaces during use. Preferably the zones are a plurality of axially spaced zones of reduced diameter so that the total length of file working portion in contact with canal wall surfaces during use is reduced. In manufacturing the improved file, a plurality of axially spaced zones of reduced diameter are formed on the working portion of a conventional file, including helical flutes and lands as desired, wherein the file of the invention includes an undulating external working portion profile.

摘要翻译： 一种用于根管根管制剂的改进文件，所述文件具有在一端的手柄部分和朝向远端渐缩的主动工作部分，所述活动部分具有外表面，所述至少一个螺旋形槽形成螺旋形 刮削边缘，优选地，沿轴向相邻的平台，所述工作部分具有在使用期间接触根管表面的减小表面的区域或区域。 优选地，这些区域是直径减小的多个轴向间隔的多个区域，使得在使用期间与文件管壁表面接触的文件工作部分的总长度减小。 在制造改进后的文件中，根据需要，在传统文件的工作部分上形成多个轴向间隔的减小的区域，包括螺旋槽纹和平台，其中本发明的文件包括起伏的外部工作部分轮廓。

公开(公告)号：US5833457A

公开(公告)日：1998-11-10

申请号：US826831

申请日：1997-04-08

申请人： William B. Johnson

发明人： William B. Johnson

IPC分类号： A61C5/02 ,  A61C5/04 ,  A61C13/30 ,  A61G5/02

CPC分类号： A61C5/04 ,  A61C13/30 ,  A61C5/02

摘要： An obturator for use in filling an endodontically prepared root canal in a tooth formed as an elongated body having a handle portion and a shaft, the handle portion being configured for grasping by a practitioner whereby the shaft may be inserted into a root canal, the shaft tapering from the handle to the shaft distal end, the shaft having an exterior surface having a generally linear groove therein extending from near the handle to the shaft distal end, or at least adjacent the shaft distal end, the groove providing: (a) a channel for flow of excess filler material as the shaft is positioned into a prepared root canal; (b) increased flexibility of the shaft, and (c) a passageway that will accept a slender, tapered metallic retrieval tool, such as a typical endodontic file, to assist in the removal of the shaft from a root canal.

摘要翻译： 一种用于填充形成为具有手柄部分和轴的细长主体的牙齿中的牙根管制备的根管的闭孔器，所述手柄部分构造成用于由从业者抓握，从而所述轴可插入根管中，所述轴 所述轴具有从所述手柄到所述轴远端的锥形，所述轴具有大致直线的槽，所述外表面从所述手柄附近延伸到所述轴远端，或者至少邻近所述轴远端，所述凹槽提供：（a） 通道用于当轴被定位成制备的根管时多余填充材料的流动; （b）轴的增加的灵活性，和（c）将接受细长的锥形金属回收工具（例如典型的牙髓锉）以帮助从根管移除轴的通道。

公开(公告)号：US5436208A

公开(公告)日：1995-07-25

申请号：US233144

申请日：1994-04-25

申请人： William B. Johnson

发明人： William B. Johnson

IPC分类号： C04B35/565 ,  C04B35/573 ,  C04B35/622 ,  C04B35/65

CPC分类号： C04B35/573

摘要： This invention broadly relates to methods for producing self-supporting silicon carbide and silicon carbide composite bodies. More particularly, this invention relates to silicon carbide and silicon carbide composites, grown by the oxidation reaction of a silicon metal with a gas comprising at least one gas selected from the group consisting of fluorinated hydrocarbon gases, chlorohydrocarbon gases, and chlorofluorocarbon gases.

摘要翻译： 本发明广泛涉及制造自支撑碳化硅和碳化硅复合体的方法。 更具体地说，本发明涉及通过硅金属与气体的氧化反应而生长的碳化硅和碳化硅复合材料，所述气体包括选自氟化烃气体，氯代烃气体和氯氟烃气体中的至少一种气体。

公开(公告)号：US5372759A

公开(公告)日：1994-12-13

申请号：US140782

申请日：1993-10-21

申请人： William B. Johnson

发明人： William B. Johnson

IPC分类号： A61C5/04 ,  A61C13/00 ,  B29C71/02

CPC分类号： A61C5/04 ,  A61C13/0028 ,  A61C5/045

摘要： Material having improved characteristics for filling endodontically prepared root canals is obtained by heat treating gutta percha based material at a temperature in the range of 210.degree. F. to 310.degree. F. for a period of two to twenty-four hours, the time being decreased as the temperature is increased.

摘要翻译： 通过在210°F至310°F的温度范围内热处理基于牙垢的材料获得具有改善的用于填充牙根管制备的根管的特征的材料，时间为二至二十四小时 随着温度的升高。

公开(公告)号：US5350003A

公开(公告)日：1994-09-27

申请号：US90352

申请日：1993-07-09

申请人： Birol Sonuparlak ,  William B. Johnson ,  Ali S. Fareed

发明人： Birol Sonuparlak ,  William B. Johnson ,  Ali S. Fareed

IPC分类号： B22D19/14 ,  C04B41/53 ,  C04B41/91 ,  C22C1/10 ,  C22C47/08 ,  B22D19/02

CPC分类号： C04B41/009 ,  B22D19/14 ,  C04B41/53 ,  C04B41/91 ,  C22C1/1036 ,  C22C47/08 ,  C22C2001/1063

摘要： The present invention relates to a novel process for removal of at least a portion of at least one metallic component of a metallic constituent from a multi-phase composite body. Particularly, by providing at least one of an infiltration enhancer or an infiltration enhancer precursor or an infiltrating atmosphere to be in communication with a permeable mass, which contacts at least a portion of a composite body, said metallic component of the composite body, when made molten, is caused to spontaneously infiltrate the permeable mass. Such spontaneous infiltration occurs without the requirement for the application of any pressure or vacuum. The metallic constituent is essentially leached or removed from the multi-phase body by spontaneous infiltration.

摘要翻译： 本发明涉及从多相复合体去除金属成分的至少一种金属成分的至少一部分的新方法。 特别地，通过提供渗透增强剂或渗透增强剂前体或渗透气氛与复合体的至少一部分接触的可渗透物质连接，所述复合体的所述金属成分在制成时 熔化，自发渗透渗透物质。 发生这种自发性渗透，而不需要施加任何压力或真空。 金属成分基本上通过自发渗透从多相体中浸出或除去。

公开(公告)号：US5232040A

公开(公告)日：1993-08-03

申请号：US794607

申请日：1991-11-15

申请人： William B. Johnson ,  James C. Wang

发明人： William B. Johnson ,  James C. Wang

IPC分类号： C04B35/65 ,  C04B41/53 ,  C04B41/91

CPC分类号： C04B35/652 ,  C04B41/53 ,  C04B41/91

摘要： This invention relates generally to a novel method for removing metal from a formed self-supporting body. A self-supporting body is made by reactively infiltrating a molten parent metal into a bed or mass containing a boron source material and a carbon source material (e.g., boron carbide) and/or a boron source material and a nitrogen source material (e.g., boron nitride) and, optionally, one or more inert fillers. Once the self-supporting body is formed, it is then placed, at least partially, into contact with another material which causes metallic constituent contained in the self-supporting body to be at least partially removed.

摘要翻译： 本发明一般涉及从形成的自支撑体中去除金属的新方法。 通过将熔融母体金属反应性渗透到含有硼源材料和碳源材料（例如碳化硼）和/或硼源材料和氮源材料（例如， 氮化硼）和任选的一种或多种惰性填料。 一旦形成自支撑体，则其至少部分地被放置成与另外的材料相接触，导致包含在自支撑体中的金属成分被至少部分去除。

公开(公告)号：US5098298A

公开(公告)日：1992-03-24

申请号：US687305

申请日：1991-04-18

申请人： William B. Johnson

发明人： William B. Johnson

IPC分类号： A61C5/04

CPC分类号： A61C5/04 ,  A61C5/045

摘要： An appliance for use in filling an endodontically prepared root canal being in the form of an elongated shaft having a distal end portion of diameter dimensioned to be received in a root canal and with a spiral thread thereon and having, at the opposite end, a shank portion, filler material formed on the shaft distal end portion, the shaft shank portion being receivable in the chuck of a dental tool having means to rotate the shaft, the shaft distal end portion having the filler material thereon being insertable in a root canal and adapted to be rotated by a dental tool to auger the filler material off of the shaft distal end portion and into the root canal, the shaft being removed from the root canal as the filler material is augured into the canal.The method of utilizing an apparatus for filling an endodontically prepared root canal includes the steps of forming onto an elongated shaft having a distal end portion of diameter dimensioned to be received in an endodontically prepared root canal and the shaft distal end portion having a spiral thread thereon and having a body of filler material thereon, the shaft having a shank portion, inserting the shank portion into the rotatable chuck of a dental tool, inserting the shaft distal end portion having the filler material thereon into a root canal, and activating the dental tool to rotate the shaft to auger the filler material into the root canal, the shaft being removed from the root canal as the filler material is augered therein.

摘要翻译： 一种用于填充经牙髓形成的根管的器具，其细长轴的形式具有直径的远端部分，其尺寸设计为容纳在根管中并且在其上具有螺旋形线，并且在相对端处具有柄 部分填充材料形成在轴远端部分上，轴柄部分可接收在具有使轴转动的装置的牙科工具的卡盘中，其上具有填充材料的轴远端部分可插入根管中并适应 通过牙科工具旋转以将填充材料从轴远端部分推出并进入根管，当填充材料被推入管道时，轴从根管中被移除。 采用填充牙髓根管的根管的装置的方法包括以下步骤：在细长轴上形成直径的远端部分的直径，该远端部分尺寸设计成容纳在经牙髓根管内，并且该轴远端部分具有螺旋线 并且在其上具有填充物体，所述轴具有柄部分，将柄部插入到牙科工具的可旋转卡盘中，将具有填充材料的轴远端部分插入根管中，并且启动牙科工具 为了旋转轴以将填充材料螺旋入根管，当填充材料在其中被加工时，轴从根管中被移除。

公开(公告)号：US4712949A

公开(公告)日：1987-12-15

申请号：US10761

申请日：1987-02-04

申请人： William B. Johnson

发明人： William B. Johnson

IPC分类号： B23C5/10 ,  B23C5/22 ,  B26D1/00

CPC分类号： B23C5/2221 ,  B23C5/109 ,  B23C2200/0416 ,  Y10T407/1924 ,  Y10T407/1936 ,  Y10T407/1948 ,  Y10T407/1964 ,  Y10T407/28

摘要： A replaceable on-edge cutting insert is especially adapted for use in end-milling cutters of small diameter, viz., in the size range down to one-half inch in diameter, and with cutting geometry which positions the rake face of the insert in the cutter body with substantially neutral radial rake and positive axial rake. A modified form having a cylindrical primary clearance land is used in the tip cutting positions of a ballnose end mill.

摘要翻译： 可替换的边缘切削刀片特别适用于小直径的端铣刀，即尺寸范围直径减半英寸，切削几何形状将刀片的前刀面定位在 刀体具有基本中性的径向耙和正轴向耙。 具有圆柱形一次间隙凸台的改进形式用于圆锥形端铣刀的尖端切割位置。