公开(公告)号：US20050072601A1

公开(公告)日：2005-04-07

申请号：US10650268

申请日：2003-08-28

申请人： Anthony Griffo ,  Gregory Lockwood ,  Mohammed Boudrare ,  Jiaqing Yu

发明人： Anthony Griffo ,  Gregory Lockwood ,  Mohammed Boudrare ,  Jiaqing Yu

IPC分类号： B22F1/00 ,  B22F5/00 ,  B22F7/06 ,  C22C32/00 ,  E21B10/08 ,  E21B10/50 ,  E21B10/00

CPC分类号： B22F1/0003 ,  B22F7/06 ,  B22F2005/001 ,  B22F2999/00 ,  C22C32/00 ,  E21B10/08 ,  E21B10/50 ,  B22F3/22

摘要： Roller cone bits include a steel bit body having a leg extending therefrom. A steel cone is disposed on the leg and includes steel cutting elements projecting outwardly therefrom. One of the cutting elements comprises a steel base integral with the cone and that projects therefrom. A cutting element end is attached to the base portion and extends to form a cutting element tip. The base and end portions are attached when the cone base are in a preexisting rigid state. The end portion comprises a wear resistant material having a material microstructure comprising a first phase of grains selected from the group of carbides, borides, nitrides, and carbonitrides of W, Ti, Mo, Nb, V, Hf, Ta, and Cr refractory metals; and a second phase of a binder material selected from the group consisting of Co, Ni, Fe, and alloys thereof.

摘要翻译： 滚子锥头包括具有从其延伸的腿的钢钻头体。 钢锥体设置在腿上并且包括从其向外突出的钢切割元件。 其中一个切割元件包括与锥体成一体并从其突出的钢基座。 切割元件端附接到基部并延伸以形成切割元件尖端。 当锥形基座处于预先存在的刚性状态时，基部和端部附接。 该端部包括耐磨材料，其具有包含选自W，Ti，Mo，Nb，V，Hf，Ta和Cr难熔金属的碳化物，硼化物，氮化物和碳氮化物的第一相晶粒的材料微观结构 ; 以及选自由Co，Ni，Fe及其合金组成的组的粘合剂材料的第二相。

公开(公告)号：US20070095577A1

公开(公告)日：2007-05-03

申请号：US11440233

申请日：2006-05-23

申请人： Anthony Griffo ,  Gregory Lockwood ,  Mohammed Boudrare ,  Jiaqing Yu

发明人： Anthony Griffo ,  Gregory Lockwood ,  Mohammed Boudrare ,  Jiaqing Yu

IPC分类号： E21B10/50

CPC分类号： B22F1/0003 ,  B22F7/06 ,  B22F2005/001 ,  B22F2999/00 ,  C22C32/00 ,  E21B10/08 ,  E21B10/50 ,  B22F3/22

摘要： Roller cone bits of this invention include a steel bit body having at least one leg extending therefrom. A steel cone is rotatably disposed on the leg. The steel cone includes a plurality of steel cutting elements that each project outwardly a distance therefrom. At least one of the cutting elements comprises a steel base portion that is integral with the cone and that projects a distance therefrom. A cutting element end portion is attached to the base portion and extends therefrom to form a tip of the cutting element. The base and end portions are permanently attached together when the cone and base are in a preexisting rigid state. The cutting element end portion is formed from a wear resistant material having a material microstructure comprising a first phase of grains selected from the group of carbides, borides, nitrides, and carbonitrides of W, Ti, Mo, Nb, V, Hf, Ta, and Cr refractory metals; and a second phase of a binder material selected from the group consisting of Co, Ni, Fe, and alloys thereof.

摘要翻译： 本发明的滚子钻头包括具有从其延伸的至少一个腿的钢钻头体。 钢锥可旋转地设置在腿上。 钢锥体包括多个钢切割元件，每个钢切割元件从其向外突出一定距离。 切割元件中的至少一个包括与锥体成一体并从其突出一定距离的钢基部。 切割元件端部附接到基部并从其延伸以形成切割元件的尖端。 当锥体和底座处于预先存在的刚性状态时，基部和端部永久地附接在一起。 切割元件端部由具有材料微观结构的耐磨材料形成，所述材料微观结构包括选自W，Ti，Mo，Nb，V，Hf，Ta等的碳化物，硼化物，氮化物和碳氮化物的晶粒的第一相， 和Cr难熔金属; 以及选自由Co，Ni，Fe及其合金组成的组的粘合剂材料的第二相。

公开(公告)号：US20070175669A1

公开(公告)日：2007-08-02

申请号：US11343225

申请日：2006-01-30

申请人： Dah-Ben Liang ,  Anthony Griffo ,  Thomas Oldham ,  Gregory Lockwood

发明人： Dah-Ben Liang ,  Anthony Griffo ,  Thomas Oldham ,  Gregory Lockwood

IPC分类号： E21B10/00

CPC分类号： E21B10/46 ,  B22F2005/002 ,  C22C29/08 ,  E21B10/55

摘要： A drill bit that includes a bit body formed from a matrix powder and at least one cutting element for engaging a formation, wherein the matrix powder included (a) stoichiometric tungsten carbide particles, (b) cemented tungsten carbide particles, and (c) cast tungsten carbide particles, and wherein after formation with the matrix powder, the bit has an erosion rate of less than 0.001 in/hr, a toughness of greater than 20 ksi(in0.5), and a transverse rupture strength of greater than 140 ksi is disclosed.

摘要翻译： 一种钻头，其包括由基质粉末形成的一个位体和用于接合地层的至少一个切割元件，其中所述基质粉末包括（a）化学计量的碳化钨颗粒，（b）硬质合金碳化物颗粒，和（c）铸造 碳化钨颗粒，并且其中在与基体粉末形成之后，该钻头的侵蚀速率小于0.001英寸/小时，韧性大于20ksi（在<0.05）和横向断裂 公开了大于140ksi的强度。

公开(公告)号：US20100142527A1

公开(公告)日：2010-06-10

申请号：US12328858

申请日：2009-02-12

申请人： Rajesh I. Balay ,  Girish Bhat ,  Gregory Lockwood ,  Rama Krishnan Nagarajan

发明人： Rajesh I. Balay ,  Girish Bhat ,  Gregory Lockwood ,  Rama Krishnan Nagarajan

IPC分类号： H04L12/56

CPC分类号： H04L12/18 ,  H04L45/16 ,  H04L45/586 ,  H04L45/60 ,  H04L65/4076

摘要： Methods and apparatus are provided for managing multicast Internet Protocol (IP) flows. According to one embodiment, a multicast IP flow is identified at an interface of a network device using information from a packet header. For any newly identified multicast IP flow, if flow-specific services are required, a new first transmit control block (TCB), which includes one or more attributes relating to flow-specific services required by the newly identified multicast IP flow, is created for the newly identified multicast IP flow. Otherwise, if flow-specific services are not required by the newly identified multicast IP flow, a default second TCB, which excludes any attributes relating to flow-specific services and which includes one or more attributes related to a virtual interface (VI) serving as an outbound interface (OIF) for the newly identified multicast IP flow, is used.

摘要翻译： 提供了用于管理组播互联网协议（IP）流的方法和装置。 根据一个实施例，使用来自分组报头的信息在网络设备的接口处识别多播IP流。 对于任何新识别的多播IP流，如果需要流特定服务，则创建新的第一传输控制块（TCB），其包括与新识别的多播IP流所需的与流特定服务有关的一个或多个属性，用于 新近识别的组播IP流。 否则，如果新确定的多播IP流不需要流特定服务，则默认第二TCB排除与流特定服务相关的任何属性，并且包括与虚拟接口（VI）相关的一个或多个属性 使用新近识别的组播IP流的出接口（OIF）。

公开(公告)号：US07881244B2

公开(公告)日：2011-02-01

申请号：US12467304

申请日：2009-05-17

申请人： Rajesh I. Balay ,  Girish Bhat ,  Gregory Lockwood ,  Rama Krishnan Nagarajan

发明人： Rajesh I. Balay ,  Girish Bhat ,  Gregory Lockwood ,  Rama Krishnan Nagarajan

IPC分类号： H04H20/71 ,  H04L12/56

CPC分类号： H04L12/18 ,  H04L45/16 ,  H04L45/586 ,  H04L45/60 ,  H04L65/4076

摘要： Methods, apparatus and data structures are provided for managing multicast IP flows. According to one embodiment, a memory of a router has stored therein a data structure, which includes information relating to multicast sessions being handled by the router and including a first pointer for each multicast session, at least one chain of blocks of second pointers and one or more TCBs. Each first pointer points to a chain of blocks of second pointers. Each second pointer corresponds to an OIF of the router participating in the multicast session defined by the first pointer and defines how many times packets associated with the multicast session are to be replicated. The TCBs are configured to store control information relevant to processing or routing packets. Each second pointer points to a TCB and each TCB identifies the OIF out which packets of the multicast session are transmitted from the router.

摘要翻译： 提供了方法，设备和数据结构来管理组播IP流。 根据一个实施例，路由器的存储器中存储有数据结构，其包括与由路由器处理的多播会话相关的信息，并且包括用于每个多播会话的第一指针，至少一个第二指针的块链和一个 或更多的TCB。 每个第一个指针指向第二个指针的块链。 每个第二指针对应于参与由第一指针定义的多播会话的路由器的OIF，并且定义与多播会话相关联的数据包将被复制多少次。 TCB被配置为存储与处理或路由分组相关的控制信息。 每个第二指针指向TCB，并且每个TCB标识出OIF从路由器发送多播会话的哪些分组。

公开(公告)号：US20070127382A1

公开(公告)日：2007-06-07

申请号：US11671462

申请日：2007-02-05

申请人： Zahid Hussain ,  Samir Jain ,  Naveed Alam ,  Joseph Cheng ,  Gregory Lockwood ,  Tim Millet

发明人： Zahid Hussain ,  Samir Jain ,  Naveed Alam ,  Joseph Cheng ,  Gregory Lockwood ,  Tim Millet

IPC分类号： H04J1/16

CPC分类号： H04L45/00 ,  H04L45/586 ,  H04L45/742 ,  H04L49/252 ,  H04L49/505 ,  H04L49/70

摘要： Methods and systems are provided for routing traffic through a virtual router-based network switch. According to one embodiment, a method for routing packets in a router includes establishing a flow data structure, which identifies a packet flow through a virtual router in the router. When a packet is received, a comparison is performed between a subset of at least one packet header associated with the packet and a subset of the flow data structure. If the subset of the packet header matches the subset of the flow data structure, then the packet can be hardware accelerated to a network interface. Otherwise, the packet may be either dropped or forwarded to a general purpose processor for processing.

摘要翻译： 提供了方法和系统，用于通过基于虚拟路由器的网络交换机路由流量。 根据一个实施例，用于在路由器中路由分组的方法包括建立流数据结构，其识别路由器中的虚拟路由器的分组流。 当接收到分组时，在与分组相关联的至少一个分组报头的子集与流数据结构的子集之间执行比较。 如果分组报头的子集与流数据结构的子集匹配，则该分组可以被硬件加速到网络接口。 否则，可以将分组丢弃或转发到通用处理器进行处理。

公开(公告)号：US20090225754A1

公开(公告)日：2009-09-10

申请号：US12467304

申请日：2009-05-17

申请人： Rajesh I. Balay ,  Girish Bhat ,  Gregory Lockwood ,  Rama Krishnan Nagarajan

发明人： Rajesh I. Balay ,  Girish Bhat ,  Gregory Lockwood ,  Rama Krishnan Nagarajan

IPC分类号： H04L12/56

CPC分类号： H04L12/18 ,  H04L45/16 ,  H04L45/586 ,  H04L45/60 ,  H04L65/4076

摘要： Methods, apparatus and data structures are provided for managing multicast IP flows. According to one embodiment, a memory of a router has stored therein a data structure, which includes information relating to multicast sessions being handled by the router and including a first pointer for each multicast session, at least one chain of blocks of second pointers and one or more TCBs. Each first pointer points to a chain of blocks of second pointers. Each second pointer corresponds to an OIF of the router participating in the multicast session defined by the first pointer and defines how many times packets associated with the multicast session are to be replicated. The TCBs are configured to store control information relevant to processing or routing packets. Each second pointer points to a TCB and each TCB identifies the OIF out which packets of the multicast session are transmitted from the router.

摘要翻译： 提供了方法，设备和数据结构来管理组播IP流。 根据一个实施例，路由器的存储器中存储有数据结构，其包括与由路由器处理的多播会话相关的信息，并且包括用于每个多播会话的第一指针，至少一个第二指针的块链和一个 或更多的TCB。 每个第一个指针指向第二个指针的块链。 每个第二指针对应于参与由第一指针定义的多播会话的路由器的OIF，并且定义与多播会话相关联的数据包将被复制多少次。 TCB被配置为存储与处理或路由分组相关的控制信息。 每个第二指针指向TCB，并且每个TCB标识出OIF从路由器发送多播会话的哪些分组。

公开(公告)号：US07499419B2

公开(公告)日：2009-03-03

申请号：US10949943

申请日：2004-09-24

申请人： Rajesh I Balay ,  Girish Bhat ,  Gregory Lockwood ,  Ram Nagarajan

发明人： Rajesh I Balay ,  Girish Bhat ,  Gregory Lockwood ,  Ram Nagarajan

IPC分类号： H04H20/71 ,  H04L12/56

CPC分类号： H04L12/18 ,  H04L45/16 ,  H04L45/586 ,  H04L45/60 ,  H04L65/4076

摘要： This document describes, among other things, a router providing service-enabled multicast forwarding for a flow-based architecture. Services are enabled using inbound/outbound policies from Access Control Lists (ACLs). In a first mode, per-flow services are not enabled, and flows are aggregated for efficiency. In a second mode, per-flow services are enabled, and control information for an outbound interface (OIF) is shared across all multicast flows that do not have per-flow service enabled. A flow management scheme for these modes allows dynamic multicast membership updates while reducing disruption of active flows. This supports a large multicast OIF list and a high rate of multicast “Joins” and “Leaves”. This provides scalability and performance, such as desired for deploying multicast for broadband subscriber applications.

摘要翻译： 本文档描述了为基于流的架构提供启用服务的组播转发的路由器。 使用访问控制列表（ACL）的入站/出站策略启用服务。 在第一种模式中，不启用每流服务，并且汇总流量以提高效率。 在第二种模式下，启用每流服务，并且在不启用每流服务的所有组播流之间共享出站接口（OIF）的控制信息。 这些模式的流量管理方案允许动态多播成员资格更新，同时减少活动流的中断。 这支持大量组播OIF列表和高速率的组播“连接”和“叶”。 这提供了可扩展性和性能，例如为宽带用户应用部署组播所需。

公开(公告)号：US20070000699A1

公开(公告)日：2007-01-04

申请号：US11478559

申请日：2006-06-29

申请人： Ramamurthy Viswanadham ,  Dah-Ben Liang ,  Gregory Lockwood

发明人： Ramamurthy Viswanadham ,  Dah-Ben Liang ,  Gregory Lockwood

IPC分类号： E21B10/36

CPC分类号： E21B10/56 ,  C23C30/005

摘要： A cutting tool that includes at least one tungsten carbide cutting element disposed on a support, wherein at least one tungsten carbide cutting element has at least one localized region having a material property different from the remaining region, wherein the at least one localized region having a different material property is prepared by a method including determining at least one localized region needing a variation in a material property different from the remaining region; coating a portion of a surface of the at least one tungsten carbide cutting element with a refractory material such that a surface corresponding to the localized region is left uncoated; and treating the coated cutting element with a selected agent to diffuse the selected agent into the localized region is disclosed.

摘要翻译： 一种切削工具，其包括设置在支撑件上的至少一个碳化钨切割元件，其中至少一个碳化钨切割元件具有至少一个具有不同于其余区域的材料性质的局部区域，其中所述至少一个局部区域具有 通过包括确定需要不同于剩余区域的材料性质的变化的至少一个局部区域的方法来制备不同的材料性质; 用耐火材料涂覆所述至少一个碳化钨切割元件的表面的一部分，使得对应于所述局部区域的表面不被涂覆; 并且公开了用所选择的试剂处理涂覆的切割元件以将所选择的试剂扩散到局部区域中。

公开(公告)号：US20100314176A1

公开(公告)日：2010-12-16

申请号：US12814189

申请日：2010-06-11

申请人： Youhe Zhang ,  Yuelin Shen ,  Yuri Burhan ,  Gregory Lockwood

发明人： Youhe Zhang ,  Yuelin Shen ,  Yuri Burhan ,  Gregory Lockwood

IPC分类号： E21B10/62 ,  E21B10/42 ,  E21B10/46 ,  E21B10/55 ,  E21B10/567 ,  B21K5/04

CPC分类号： E21B10/567 ,  B23P15/28 ,  E21B10/52 ,  E21B10/573 ,  E21B10/633

摘要： Cutter assemblies comprising an outer support element and a cutting element disposed therein. The cutting element is immovably attached to the outer support element. Also provided are downhole tools incorporating such cutter assemblies and methods of making such downhole tools.

摘要翻译： 切割器组件包括外部支撑元件和设置在其中的切割元件。 切割元件不可移动地附接到外部支撑元件。 还提供了包括这种切割器组件的井下工具以及制造这种井下工具的方法。