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1. 发明授权

US5743344A System for in situ replacement of cutting means for a ground drill 失效
公开(公告)号：US5743344A
公开(公告)日：1998-04-28
申请号：US473881
申请日：1995-06-07
申请人： Gavin Thomas McLeod , Matthew Vance Egan
发明人： Gavin Thomas McLeod , Matthew Vance Egan
IPC分类号： E21B10/66 , E21B10/32
CPC分类号： E21B10/66
摘要： A retractable drill bit system 10 comprises a drive sub 18 which is adapted for connection to a lower end of a drill 12, a tool 20 for installing and retracting drill bit segments 22 from the drive sub 18; and an insert 24 for selectively locking the bit segments 22 to an end of the drive sub 18 and releasing the bit segments 22. A plurality of recesses 5B are formed about an inner circumferential wall at one end of the drive sub 18 and a landing seat 32 formed about the inner wall upstream of the recesses 58. The area of the interior wall between the landing seat 32 and recesses 58 is profiled with a series of tapered and level surfaces. The tool 20 includes a slidable cradle 176 extending from one end about which the bit segments 22 are held during installation and retrieval. The bit segments 22 being held in place about the cradle by an elastic band 198. The insert 24 is provided at one end with a series of keyways 218 which locate over the bit segments 22 when the bit segments are locked to the drive sub 18. The insert 24 is always retained within the drive sub 18. Bit segments 22 are carried by the tool 20 to the drive sub 18 and locked in place by the insert 24. The tool 20 can then be withdrawn and the drill 12 operated in the normal manner. To retrieve the bit segments 22, the tool 20 is relowered into the drill and then withdrawn a short distance to retract the insert 24 so that the bit segments 22 collapse back onto the cradle 176 and can then be withdrawn from the drill 12.

2. 外观设计

USD402674S Cutting head 失效
公开(公告)号：USD402674S
公开(公告)日：1998-12-15
申请号：US40009
申请日：1995-06-07
申请人： Gavin Thomas McLeod , Matthew Vance Egan
设计人： Gavin Thomas McLeod , Matthew Vance Egan

3. 发明授权

US5662182A System for in situ replacement of cutting means for a ground drill 失效
标题翻译：用于原位更换地面钻机切割装置的系统
公开(公告)号：US5662182A
公开(公告)日：1997-09-02
申请号：US433402
申请日：1995-07-07
申请人： Gavin Thomas McLeod , Matthew Vance Egan
发明人： Gavin Thomas McLeod , Matthew Vance Egan
IPC分类号： E21B7/00 , E21B10/02 , E21B10/62 , E21B10/64 , E21B10/66 , E21B23/03 , E21B25/02
CPC分类号： E21B10/66 , E21B10/02 , E21B25/02
摘要： A retractable drill bit system (10) comprises a drive sub (18) which is adapted for connection to a lower end of a drill (12), a tool (20) for installing and retractable drill bit segments (22) from the drive sub (18); and an insert (24) for selectively locking the bit segments (22) to an end of the drive sub (18) and releasing the bit segments (22). A plurality of recesses (5B) are formed about an inner circumferential wall at one end of the drive sub (18) and a landing seat (32) formed about the inner wall upstream of the recesses (58). The area of the interior wall between the landing seat (32) and recesses (58) is profiled with a series of tapered and level surfaces. The tool (20) includes a slidable cradle (176) extending from one end about which the bit segments (22) are held during installation and retrieval. The bit segments (22) being held in place about the cradle by an elastic band (198). The insert (24) is provided at one end with a series of keyways (218) which locate over the bit segments (22) when the bit segments are locked to the drive sub (18). The insert (24) is always retained within the drive sub (18). Bit segments (22) are carried by the tool (20) to the drive sub (18) and locked in place by the insert (24). The tool (20) can then be withdrawn and the drill (12) operated in the normal manner. To receive the bit segments (22), the tool (20) is relowered into the drill and then withdrawn a short distance to retract the insert (24) so that the bit segments (22) collapse back onto the cradle (176) and can then be withdrawn from the drill (12).
摘要翻译： PCT No.PCT / AU94 / 00322 Sec。 371日期：1995年7月7日 102（e）日期1995年7月7日PCT提交1994年6月15日PCT公布。 WO94 / 29567 PCT出版物日期1994年12月22日可伸缩钻头系统（10）包括适于连接到钻头（12）的下端的驱动副（18），用于安装和缩回钻头段（22）的工具（20））从驱动子（18）; 以及用于选择性地将钻头段（22）锁定到驱动副（18）的端部并释放钻头段（22）的插入件（24）。围绕驱动副（18）的一端的内周壁和在凹部（58）的上游的内壁周围形成的着陆座（32）形成有多个凹部（5B）。着陆座（32）和凹槽（58）之间的内壁的区域具有一系列锥形和水平面。工具（20）包括一个从一端延伸的可滑动支架（176），在安装和检索期间，钻头段（22）围绕该保持位延伸。钻头段（22）通过弹性带（198）保持在托架周围的适当位置。当钻头段被锁定到驱动副（18）时，插入件（24）在一端处设置有一系列键槽（218），其位于钻头段（22）之上。插入件（24）总是保持在驱动副（18）内。位段（22）由工具（20）承载到驱动器副（18）并由插入件（24）锁定就位。然后可以撤回工具（20），钻头（12）以正常方式操作。为了接收钻头段（22），工具（20）被倒入钻头中，然后退出短距离以缩回插入件（24），使得钻头段（22）折回到支架（176）上，并且可以然后从钻机（12）中取出。

4. 发明授权

US5954146A System for in situ replacement of cutting means for a ground drill 失效
标题翻译：用于原位更换地面钻机切割装置的系统
公开(公告)号：US5954146A
公开(公告)日：1999-09-21
申请号：US475904
申请日：1995-06-07
申请人： Gavin Thomas McLeod , Matthew Vance Egan
发明人： Gavin Thomas McLeod , Matthew Vance Egan
IPC分类号： E21B7/00 , E21B10/02 , E21B10/62 , E21B10/64 , E21B10/66 , E21B23/03 , E21B25/02 , E21B10/00
CPC分类号： E21B10/66 , E21B10/02 , E21B25/02
摘要： A retractable drill bit system 10 comprises a drive sub 18 which is adapted for connection to a lower end of a drill 12, a tool 20 for installing and retracting drill bit segments 22 from the drive sub 18; and an insert 24 for selectively locking the bit segments 22 to an end of the drive sub 18 and releasing the bit segments 22. A plurality of recesses 5B are formed about an inner circumferential wall at one end of the drive sub 18 and a landing seat 32 formed about the inner wall upstream of the recesses 58. The area of the interior wall between the landing seat 32 and recesses 58 is profiled with a series of tapered and level surfaces. The tool 20 includes a slidable cradle 176 extending from one end about which the bit segments 22 are held during installation and retrieval. The bit segments 22 being held in place about the cradle by an elastic band 198. The insert 24 is provided at one end with a series of keyways 218 which locate over the bit segments 22 when the bit segments are locked to the drive sub 18. The insert 24 is always retained within the drive sub 18. Bit segments 22 are carried by the tool 20 to the drive sub 18 and locked in place by the insert 24. The tool 20 can then be withdrawn and the drill 12 operated in the normal manner. To retrieve the bit segments 22, the tool 20 is relowered into the drill and then withdrawn a short distance to retract the insert 24 so that the bit segments 22 collapse back onto the cradle 176 and can then be withdrawn from the drill 12.
摘要翻译：可伸缩钻头系统10包括适于连接到钻头12的下端的驱动子18，用于从驱动子18安装和收回钻头段22的工具20; 以及插入件24，用于选择性地将钻头段22锁定到驱动副18的端部并释放钻头段22.多个凹槽5B围绕驱动副18的一端的内周壁形成， 32形成在凹槽58的上游的内壁周围。着陆座32和凹部58之间的内壁的区域被一系列锥形和水平的表面成型。工具20包括从一端延伸的可滑动的托架176，在安装和取出期间，钻头段22保持在该端部附近。钻头段22通过弹性带198保持在托架周围的适当位置。插入件24在一端处设置有一系列键槽218，当钻头段被锁定到驱动副18时，它们位于钻头段22上方。插入件24总是保持在驱动器子18内。刀片段22由工具20承载到驱动器子18上，并被插入件24锁定就位。然后可以撤回工具20，钻头12以正常的方式操作方式。为了回收钻头段22，将工具20倒入钻头中，然后退出短距离以缩回插入件24，使得钻头段22折回到托架176上，然后可从钻头12中取出。

5. 发明授权

US5785134A System for in-situ replacement of cutting means for a ground drill 失效
标题翻译：用于原位更换钻机切割装置的系统
公开(公告)号：US5785134A
公开(公告)日：1998-07-28
申请号：US475905
申请日：1995-06-07
申请人： Gavin Thomas McLeod , Matthew Vance Egan
发明人： Gavin Thomas McLeod , Matthew Vance Egan
IPC分类号： E21B7/00 , E21B10/02 , E21B10/62 , E21B10/64 , E21B10/66 , E21B23/03 , E21B25/02
CPC分类号： E21B10/66 , E21B10/02 , E21B25/02
摘要： A retractable drill bit system 10 comprises a drive sub 18 which is adapted for connection to a lower end of a drill 12, a tool 20 for installing and retracting drill bit segments 22 from the drive sub 18; and an insert 24 for selectively locking the bit segments 22 to an end of the drive sub 18 and releasing the bit segments 22. A plurality of recesses 5B are formed about an inner circumferential wall at one end of the drive sub 18 and a landing seat 32 formed about the inner wall upstream of the recesses 58. The area of the interior wall between the landing seat 32 and recesses 58 is profiled with a series of tapered and level surfaces. The tool 20 includes a slidable cradle 176 extending from one end about which the bit segments 22 are held during installation and retrieval. The bit segments 22 being held in place about the cradle by an elastic band 198. The insert 24 is provided at one end with a series of keyways 218 which locate over the bit segments 22 when the bit segments are locked to the drive sub 18. The insert 24 is always retained within the drive sub 18. Bit segments 22 are carried by the tool 20 to the drive sub 18 and locked in place by the insert 24. The tool 20 can then be withdrawn and the drill 12 operated in the normal manner. To retrieve the bit segments 22, the tool 20 is relowered into the drill and then withdrawn a short distance to retract the insert 24 so that the bit segments 22 collapse back onto the cradle 176 and can then be withdrawn from the drill 12.
摘要翻译：可伸缩钻头系统10包括适于连接到钻头12的下端的驱动子18，用于从驱动子18安装和收回钻头段22的工具20; 以及插入件24，用于选择性地将钻头段22锁定到驱动副18的端部并释放钻头段22.多个凹槽5B围绕驱动副18的一端的内周壁形成， 32形成在凹槽58的上游的内壁周围。着陆座32和凹部58之间的内壁的区域被一系列锥形和水平的表面成型。工具20包括从一端延伸的可滑动的托架176，在安装和取出期间，钻头段22保持在该端部附近。钻头段22通过弹性带198保持在托架周围的适当位置。插入件24在一端处设置有一系列键槽218，当钻头段被锁定到驱动副18时，它们位于钻头段22上方。插入件24总是保持在驱动器子18内。刀片段22由工具20承载到驱动器子18上，并被插入件24锁定就位。然后可以撤回工具20，钻头12以正常的方式操作方式。为了回收钻头段22，将工具20倒入钻头中，然后退出短距离以缩回插入件24，使得钻头段22折回到托架176上，然后可从钻头12中取出。

6. 外观设计

USD384962S Drill bit finger 失效
公开(公告)号：USD384962S
公开(公告)日：1997-10-14
申请号：US40008
申请日：1995-06-07
申请人： Gavin Thomas McLeod , Matthew Vance Egan
设计人： Gavin Thomas McLeod , Matthew Vance Egan

7. 发明授权

US06206114B1 Tool for transporting cutting means to and from a ground drill 失效
标题翻译：将切割装置运送到地面钻机的工具
公开(公告)号：US06206114B1
公开(公告)日：2001-03-27
申请号：US09029395
申请日：1998-02-27
申请人： Gavin Thomas McLeod
发明人： Gavin Thomas McLeod
IPC分类号： E21B1064
CPC分类号： E21B10/66 , E21B23/02
摘要： A down hole running tool 14 travels in a first direction through a drill pipe for installing bit segments 18 at the end of a drive sub 12 attached to the drill pipe. The tool 14 includes a first portion 82 and a second portion 84 which is retractably coupled to a leading end of the first portion 82. The first portion 82 includes a tubular extension 134 which receives a spigot 136 that extends from an upper end of the second portion 84. A pin 138 extends transversely through the tubular extension 134 and resides within opposing slots 140 formed in the spigot 136. There is a stepped reduction in the internal diameter at the lower end of the tubular extension 134 so as to form a cup-like structure 146. A spring 168 is disposed about the spigot 136 and has an upper end seated in the cup-like structure 146 and a lower end bearing against an upper face 170 of the second portion 84. The spring 168 is biased so as to push the first and second portions 82 and 84 apart in the longitudinal direction. When the tool 14 is lowered into the drive sub 12 and the second portion 84 hits a stop, the first portion 82 is able to continue movement for a short distance against the bias of the spring 168 by virtue of a gap existing between the surface 170 and the end of the cup-like structure 146.
摘要翻译：井下运行工具14沿着第一方向行进通过钻杆，用于在附接到钻杆的驱动器12的端部处安装钻头段18。工具14包括第一部分82和第二部分84，第一部分82和第二部分84可缩回地联接到第一部分82的前端。第一部分82包括管状延伸部134，其接纳从第二部分82的上端延伸的插口136 销138横向延伸穿过管状延伸部134并且位于形成在插口136中的相对的狭槽140内。管状延伸部134的下端处的内径具有阶梯式减小，从而形成杯状部分84。弹簧168围绕插口136设置，并且具有安置在杯状结构146中的上端和抵靠第二部分84的上表面170的下端支承。弹簧168被偏压以便推动第一和第二部分82和84在纵向上分开。当工具14下降到驱动器12中并且第二部分84击中停止时，第一部分82能够通过存在于表面170之间的间隙而相对于弹簧168的偏压而继续移动短距离以及杯状结构146的端部。

8. 发明授权

US6155360A Retractable drill bit system 失效
标题翻译：伸缩钻头系统
公开(公告)号：US6155360A
公开(公告)日：2000-12-05
申请号：US253743
申请日：1999-02-22
申请人： Gavin Thomas McLeod
发明人： Gavin Thomas McLeod
IPC分类号： E21B10/66 , E21B10/64
CPC分类号： E21B10/66
摘要： A retractable drill bit system for a ground drill includes drill bit assembly, a bit assembly sleeve, and a transport member. The drill bit assembly is engagable with a drive sub attached to the bottom of the ground drill with the drill bit assembly being selectively expandable and collapsible between a transport position in which the drill bit assembly is transported through the ground drill by the sleeve and transport member and a cutting position in which the drill bit assembly locks into the drive sub and cuts the hole. The drill bit assembly in the cutting position is able to cut a hole substantially greater than the diameter of the ground drill itself. The drill bit assembly includes a circular bit attached at a lower most end of the sleeve and bit segments retained in slots formed in the sleeve. Each segment is provided with a lever that extends radially inwardly of the sleeve and engages the transport member. The transport member is arranged coaxially with and extends inside the sleeve, with the transport member or sleeve being resiliently coupled together to allow relative linear sliding motion. The lower end of the bit assembly sleeve extends beyond a lower end of the transport member. The drill bit assembly is coupled to the bit assembly sleeve and transport member so that linear motion of the lower ends of the sleeve and the transport member urges the segments radially outwardly from engagement of the levers with the transport member.
摘要翻译：一种用于地钻的伸缩式钻头系统包括钻头组件，钻头组合套筒和运输构件。所述钻头组件可接合附接到所述地钻的底部的驱动副，所述钻头组件选择性地可膨胀和可收缩在所述钻头组件通过所述套筒和所述输送构件传送通过所述钻探机的运输位置之间以及切割位置，其中钻头组件锁定到驱动器底部并切割孔。在切割位置的钻头组件能够切割大致大于钻头本身直径的孔。钻头组件包括附接在套筒最下端的圆形钻头和保持在套筒中形成的槽中的钻头段。每个部分设置有一个杠杆，该杠杆沿套筒的径向向内延伸并与输送构件接合。传送构件与套筒同轴地布置并延伸到套筒内部，其中传送构件或套筒弹性地联接在一起以允许相对的线性滑动运动。钻头组合套筒的下端延伸超出输送构件的下端。钻头组件联接到钻头组件套筒和输送构件，使得套筒和输送构件的下端的直线运动通过杆与输送构件的接合而径向向外推动段。

9. 发明授权

US5813481A System for in situ replacement of cutting means for a ground drill 失效
标题翻译：用于原位更换地面钻机切割装置的系统
公开(公告)号：US5813481A
公开(公告)日：1998-09-29
申请号：US473879
申请日：1995-06-07
申请人： Gavin Thomas McLeod , Matthew Vance Egan
发明人： Gavin Thomas McLeod , Matthew Vance Egan
IPC分类号： E21B7/00 , E21B10/02 , E21B10/62 , E21B10/64 , E21B10/66 , E21B23/03 , E21B25/02
CPC分类号： E21B10/66 , E21B10/02 , E21B25/02
摘要： An insert for releasably retaining drill bit segments in a ground drill takes the form of a cylindrical tube movable within the ground drill between an installation position and a retrieval position. A pair of opposing tapered peaks extends from the upstream end of the insert. Sides of the peaks slope sharply in a downstream direction and lead to flats separating the peaks. When a running tool with radially extending latch dogs travels down the drill, the latch dogs contact the peaks to cause the tool to rotate about its longitudinal axis. When the latch dogs hit the flats they engage the insert, pushing it down into the installation position and locking the bit segments into a cutting position. Another set of latch dogs provided on the tool can engage slots formed in the insert to pull the insert upwardly and release the bit segments.
摘要翻译：用于将钻头段可释放地保持在钻地钻头中的插入件采取在安装位置和检索位置之间可在钻机内移动的圆柱形管子的形式。一对相对的锥形尖端从插入件的上游端延伸。峰的边缘在下游方向上急剧下降，并导致平坦的峰分离。当具有径向延伸的闩锁的行进工具沿着钻头向下移动时，闩锁爪接触该峰以使工具围绕其纵向轴线旋转。当锁定爪碰到平板时，它们与插入件接合，将其向下推入安装位置并将钻头段锁定在切割位置。设置在工具上的另一组闩锁可以接合形成在插入件中的槽，以向上拉动插入件并释放钻头段。

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