| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 21 | DRILL BIT WITH SELF-ADJUSTING PADS | US14864436 | 2015-09-24 | US20160053551A1 | 2016-02-25 | Jayesh R. Jain; Benjamin Baxter; Chaitanya K. Vempati; Steven R. Ranford; Volker Peters; Gregory L. Ricks; Miguel Bilen; Holger Stibbe; David A. Curry |
| In one aspect, a drill bit is disclosed, including: a bit body; a pad associated with the bit body; a rate control device coupled to the pad that extends from a bit surface at a first rate and retracts from an extended position to a retracted position at a second rate in response to external force applied onto the pad, the rate control device including: a piston for applying a force on the pad; a biasing member that applies a force on the piston to extend the pad at the first rate; a fluid chamber associated with the piston; and a pressure management device for controlling a fluid pressure within the fluid chamber. | ||||||
| 22 | Drill bit with self-adjusting pads | US13864926 | 2013-04-17 | US09255450B2 | 2016-02-09 | Jayesh R. Jain; Juan Miguel Bilen |
| A drill bit including a bit body and a pad. The pad extends from a retracted position to an extended position from a bit surface at a first rate and retracts from the extended position to a retracted position at a second rate that is less than the first rate. | ||||||
| 23 | Cutting structures for fixed cutter drill bit and other downhole cutting tools | US13826193 | 2013-03-14 | US08887837B2 | 2014-11-18 | Michael G. Azar; Bala Durairajan; Madapusi K. Keshavan |
| A downhole cutting tool may include a tool body; a plurality of blades extending azimuthally from the tool body; and a plurality of cutting elements disposed on the plurality of blades, the plurality of cutting elements comprising: at least two non-planar cutting elements comprising a substrate and a diamond layer having a non-planar cutting end, wherein at least one of the at least two conical cutting elements has a positive back rake angle or positive side rake angle, and at least one of the at least two non-planar cutting elements has a negative back rake angle or a negative side rake angle. | ||||||
| 24 | Drill Bit with Self-Adjusting Pads | US13864926 | 2013-04-17 | US20140311801A1 | 2014-10-23 | Jayesh R. Jain; Juan Miguel Bilen |
| In one aspect, a drill bit is disclosed that in one embodiment includes a bit body and a pad that extends from a retracted position to an extended position from a bit surface at a first rate and retracts from the extended position to a retracted position at a second rate that is less than the first rate. | ||||||
| 25 | CUTTING STRUCTURES FOR FIXED CUTTER DRILL BIT AND OTHER DOWNHOLE CUTTING TOOLS | US13370862 | 2012-02-10 | US20120234610A1 | 2012-09-20 | Michael G. Azar; Bala Durairajan; Madapusi K. Keshavan |
| A downhole cutting tool may include a tool body; a plurality of blades extending azimuthally from the tool body; and a plurality of cutting elements disposed on the plurality of blades, the plurality of cutting elements comprising: at least two conical cutting elements comprising a substrate and a diamond layer having a conical cutting end, wherein at least one of the at least two conical cutting elements has a positive back rake angle, and at least one of the at least two conical cutting elements has a negative back rake angle. | ||||||
| 26 | EARTH-BORING TOOLS INCLUDING PASSIVELY ADJUSTABLE, AGRESSIVENESS-MODIFYING MEMBERS AND RELATED METHODS | EP16876749.9 | 2016-12-16 | EP3390761A1 | 2018-10-24 | JAIN, Jayesh, Rameshlal; VEMPATI, Chaitanya, K.; RICKS, Gregory, L.; BILEN, Juan, Miguel |
| A drill bit including a bit body and a pad. The pad extends from a retracted position to an extended position from a bit surface at a first rate and retracts from the extended position to a retracted position at a second rate that is less than the first rate. | ||||||
| 27 | DRILL BIT WITH SELF-ADJUSTING PADS | EP14785132.3 | 2014-04-17 | EP2986804B1 | 2018-05-23 | JAIN, Jayesh, R.; BILEN, Juan Miguel |
| A drill bit including a bit body and a pad. The pad extends from a retracted position to an extended position from a bit surface at a first rate and retracts from the extended position to a retracted position at a second rate that is less than the first rate. | ||||||
| 28 | DRILL BIT WITH SELF-ADJUSTING PADS | EP14785132 | 2014-04-17 | EP2986804A4 | 2016-12-28 | JAIN JAYESH R; BILEN JUAN MIGUEL |
| Earth-boring tools may include a body and a passively adjustable, aggressiveness-modifying member secured to the body. The passively adjustable, aggressiveness-modifying member may be movable between a first position in which the earth-boring tool exhibits a first aggressiveness and a second position in which the earth-boring tool exhibits a second, different aggressiveness responsive to forces acting on the passively adjustable, aggressiveness-modifying member. | ||||||
| 29 | 일회용 착탈식 비트 및 이를 이용한 앵커 시공 방법 | KR1020070018574 | 2007-02-23 | KR1020080078435A | 2008-08-27 | 강익희 |
| A disposable detachable bit and an anchor constructing method using the same are provided to position an inserted matter at the accurate point in a hole by fixing the inserted matter to the bit. A disposable detachable bit comprises a main body(110), a coupling protrusion(120), an insertion protrusion(130), and blades(140). The main body shapes like a disk and has flanges at the back. The coupling protrusion is installed in the main body, separated from the flange. The insertion protrusion extends from the main body within the flange and receives an inserted matter. The blades are attached to the front surface of the main body at regular intervals, inclined at a predetermined angle. The inserted matter is an anchor or a reinforcing bar. | ||||||
| 30 | 굴착장치 | KR1020080037886 | 2008-04-23 | KR1020090112162A | 2009-10-28 | 김철규 |
| PURPOSE: An excavating apparatus is provided to improve the progress speed of a task by replacing a guide bit in case of damage to a button. CONSTITUTION: An excavating apparatus comprises followings. A hammer(32) provides the torque and hitting power. A main bit(42) is installed on the lower part of the hammer. The main bit has a plurality of buttons on the front end. The main bit rotates or ascends after being provided with the torque and the hitting power from the hammer. A guide bit(62) is combined with the outer circumference of the main bit. A through-hole is formed inside the guide bit, so the main bit passes through the through-hole. A stepped part is protruded on the outer circumference of the main bit. | ||||||
| 31 | 선단 추진 장치용 커터 스포크 탈부착식 커터 헤드 | KR2020060022386 | 2006-08-21 | KR200434215Y1 | 2006-12-18 | 박기운; 김종국; 강호성 |
| 본 고안에 따른 선단 추진 장치용 커터 스포크 탈부착식 커터 헤드(10)는, 복수 개의 체결공(21)을 구비한 둘레부(22)를 외주 면에 포함하는 원통 형상의 본체(20); 상기 본체(20)의 측부에서 일정 각도 간격으로 상하 다른 높이를 가지도록 복수 쌍으로 구성되되, 이 중 각각의 1쌍은 서로 180도의 각으로 수평 방향의 대향 측면에 형성되어 있는 홀(31,32); 양 측단에 패스너 체결공(44)을 각각 구비하고, 상기 1쌍의 홀(31,32)을 따라 수평 방향으로 슬라이딩 결합되는 복수 개의 커터 스포크(41,42); 상기 커터 스포크(41,42)의 상면에 형성된 다수의 커터(50);로 구성이 되어, 상기 본체(20)의 홀(31,32)과 상기 커터 스포크(41,42)의 패스너 체결공(44)을 통해 패스너(60)를 체결 및 해제함으로, 상기 커터 스포크(41,42)가 상기 본체(20)에서 탈부착 가능하게 결합되는 것을 특징으로 한다. 본 고안에 따른 선단 추진 장치용 커터 스포크 탈부착식 커터 헤드에 따르면, 일일이 각 커터를 커터 스포크에서 교체하는 불편함 없이 굴착용도에 따라 적합하게 사용되는 커터가 복수 개 형성된 커터 스포크 자체를 교체할 수가 있어, 굴착 공정이 보다 신속하고 편리해지는 장점이 있다. | ||||||
| 32 | 굴착용 함마 | KR1020050114000 | 2005-11-28 | KR1020050118654A | 2005-12-19 | 장병철 |
| 본 발명은 지반의 굴착 또는 시추(試錐, boring)에 사용되는 함마에 관한 것으로서, 보다 구체적으로는 상단이 상기 함마 하단에 결합 고정된 상부비트; 상기 상부비트에 회전 가능하도록 축 결합되면서 지반과 직접 접촉하여 굴착이 이루어지는 하부비트; 및 상기 상/하부비트 사이에 축 결합되어 함마의 회전에 따라 외측으로 펼쳐지거나 내측으로 접혀지는 측부비트; 가 구성되어 이루어진다. 따라서 상기 함마의 정회전시 측부비트가 강관 외측으로 펼쳐지면서 원활한 굴착이 이루어지고, 함마의 역회전시 측부비트가 강관 내측으로 접혀지면서 함마의 교체를 위한 강관으로부터의 분리가 용이하게 이루어지도록 한 굴착용 함마를 제공하게 된다. | ||||||
| 33 | 분리형 천공비트 | KR2020040029105 | 2004-10-14 | KR200371825Y1 | 2005-01-10 | 한광수 |
| 본 고안은, 천공장치의 로드 단부에 장착되어 지반 또는 암반을 굴착하기 위한 천공비트로, 상기 로드의 회전에 의해 지반 또는 암반을 천공하는 파일럿 비트와; 상기 파일럿 비트와 탈착 가능하도록 결합되는 아웃케이싱 비트와; 천공작업과 동시에 천공홀에 케이싱을 삽입하기 위한 케이싱 슈;를 포함하여 구성되어, 다양한 구경의 홀을 천공할 수 있으며, 그와 동시에 공사원가를 절감시킬 수 있는 분리형 천공비트를 제공한다. | ||||||
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