baber/WOPTO huggingface dataset:
Patent KR-20020033241-A (KR)
Title: Method for manufacturing steel plate having superior toughness in weld heat-affected zone
Inventor: CHOI HAE CHANG
IPC: C22C38/04
Filed: 2000-10-30
Abstract: PURPOSE: A method for manufacturing a steel plate for welded structure is provided which has superior toughness in the weld heat-affected zone as finely distributing TiN deposits in a low nitrogen steel slab through carbonitriding and minimizing a toughness difference between a base metal and a weld heat-affected zone using Ti-Zr composite oxides. CONSTITUTION: The method for manufacturing the steel plate for welded structure having superior toughness in weld heat-affected zone comprises the processes of manufacturing a slab comprising 0.03 to 0.17 wt.% of C, 0.01 to 0.5 wt.% of Si, 0.4 to 2.0 wt.% of Mn, 0.005 to 0.2 wt.% of Ti, 0.0005 to 0.1 wt.% of Al, 0.005 wt.% or less of N, 0.0003 to 0.01 wt.% of B, 0.001 to 0.2 wt.% of W, 0.03 wt.% or less of P, 0.03 wt.% or less of S, 0.002 to 0.03 wt.% of O, 0.005 to 0.1 wt.% of Zr satisfying 3<=Zr/O <=8, 7<=(Ti+Zr)/O<=14 and 4<=Ti/O<=10, and a balance of Fe and other impurities; carbonitriding the steel slab so that 0.008 to 0.03 wt.% of N in the steel satisfies the following relational expressions with Ti, B and Al as heating the slab to the temperature range of 1100 to 1250 deg.C for 60 to 180 minutes: 1.2<=Ti/N<=2.5, 10<=N/B <=40, 2.5<=Al/N<=7, and 6.5<=(Ti+2Al+4B)/N<=14; hot rolling the heated slab to a rolling ratio of 40% or more in the Austenite recrystallization zone; and cooling the hot rolled steel slab to the ferrite transformation finishing temperature±10 deg.C in a cooling rate of 1 deg.C/min or more.
Patent KR-20020036204-A (KR)
Title: Apparatus for protection equipment
Inventor: KIM YEONG SEOK
IPC: F24F3/00
Filed: 2000-11-08
Abstract: PURPOSE: An equipment protection apparatus is provided to achieve improved operating reliability of equipment by maintaining temperature and humidity in the closed space constant, while reducing breakdown and maintenance cost. CONSTITUTION: An equipment protection apparatus comprises a square closed structure(10) having an outlet; and a cooling unit(20) installed to penetrate through the upper end portion of the closed structure and constituted by a plurality of doughnut-shaped pipes filled with a distilled water. The cooling unit includes a heat radiation portion(22) arranged in the center of the pipe installed outside the closed structure; a heat absorption portion(24) arranged in the center of the pipe installed inside the closed structure; and a coupling portion for coupling the cooling unit to the closed structure. The gap formed between the heat absorption portion and the pipe installed inside the closed container, is filled with a paraffin having moisture-proof and heat absorption characteristics.
Patent KR-20020037463-A (KR)
Title: Locking controller of a sliding door
Inventor: CHOI JAE HONG
IPC: E05B83/36
Filed: 2000-11-14
Abstract: PURPOSE: A locking controller of a sliding door is provided, which controls a locking operation of a device keeping door opening or a device keeping door closing, by interlocking with an inner handle recovered to a neutral position elastically. CONSTITUTION: The locking controller(300) comprises a housing(310) where a number of connection parts and guide holes(310a,310b,310c), and an inner handle link(320) and an operation control link(330) and a link(340) for a device keeping door closing rotating with a center of a hinge axis(F). A link for a device keeping door opening is rotated with a center of a hinge axis(M). A device for an outside handler goes upward and downward. A door locking device(370) is rotated with a center of a hinge axis(K). And a door opening preventing device(380) is rotated with a center of a hinge axis(G). And an actuator(390) controls an operation of the door locking device electrically.
Patent KR-20020039844-A (KR)
Title: Method for adhereing spacer using ultra violet
Inventor: JUNG JAE HEUNG
IPC: G02F1/1339
Filed: 2000-11-22
Abstract: PURPOSE: A spacer adhesion method using ultraviolet rays is provided to stick spacers on a substrate by irradiating ultraviolet rays on the spacers without using heat treatment. CONSTITUTION: Spacers(203) are distributed on a substrate(207) in order to maintain a uniform space between an array substrate and a color filter substrate constructing a liquid crystal display. The outer surface of the spacer is coated with a material hardened by ultraviolet rays. Ultraviolet rays(202) are irradiated on the spacers distributed on the substrate to harden the material coated on the spacers.
Patent KR-20010008359-A (KR)
Inventor: CHOI BYUNG HO
IPC: A61B17/88
Filed: 2000-11-27
Abstract: PURPOSE: Provided is a method for reducing the front and rear part of fracture at corner of a lower jawbone by means of approaching the fractured part at corner of the lower jawbone in a mouth with a forceps. CONSTITUTION: The method comprises the steps of: forming pressing points(18,19) on the outside of the front fractured part(13) and on the inside or the upside of the rear fractured part(15); pressing the couple of the pressing points(18,19) in the faced direction along a virtual line connected between the pressing points(18,19) and passed through the cross section of the fractured part(11). Further, the method is performed by using the forceps includes bent parts for being inserted into the pressing points(coupling holes)(18,19).
Patent KR-20020043366-A (KR)
Title: System and Method of Scheduled bidding service in internet auction
Inventor: JANG MIN SU
Filed: 2000-12-04
Abstract: PURPOSE: A system and a method for bidding a reservation for an Internet auction are provided to enable a bidder to increase a successful bid probability without participating in a bid directly by receiving bid reservation information of a user and performing bid process at a pre-set time. CONSTITUTION: In a reservation bid system for an Internet auction, a reservation bid information input unit(201) receives reservation bid information from a corresponding bidder with respect to a reservation bid item supplied to a bidder through a user interface. A reservation bid information storing unit(202) stores the reservation bid information inputted through the reservation bid information input unit(201). A bid scheduling unit(203) performs a control for processing a bid in a designated time in accordance with reservation bid time information of the reservation bid information inputted through the reservation bid information input unit(201). A bid execution unit(204) performs a bid process in accordance with the reservation bid information stored in the reservation bid information storing unit(202) based on a control of the bid scheduling unit(203).
Patent KR-20020045236-A (KR)
Title: Hybrid structured membranes for the separation of volatile organic compounds from waste stream, and preparation thereof
Inventor: LEE JEONG MIN
IPC: B01D69/12
Filed: 2000-12-08
Abstract: PURPOSE: To separate volatile organic compounds from waste stream effectively, a hybrid membrane which is composed of porous membrane layer and non-porous membrane layer is provided. The porous membrane layer has the ability of concentration and has an effect on the characteristic of separation, whereas the non-porous membrane layer has the ability of purification and an affinity for volatile organic compounds. The hybrid membrane can improve the effectiveness of separation by picking out the merits of porous and non-porous membrane layers. CONSTITUTION: The hybrid membrane comprises a porous membrane layer which has the ability of concentration and a non-porous membrane layer which is coated with macromolecules that have an affinity for volatile organic compounds. On one side of the porous layer, a solution containing fillers, including aluminum nitrate, aluminum sulfate, calcium chloride and polyethylene oligomer, is applied, whereas on the other side of the porous layer, negative pressure of 5-300 torr is applied. After forming a porous layer on one side, polydimethyl siloxane oligomer is applied the other side so that a non-porous layer is formed.
Patent KR-20020045869-A (KR)
Title: Method for forming contact hole and spacer of semiconductor device
Inventor: KONG PIL GU
IPC: H01L21/768
Filed: 2000-12-11
Abstract: PURPOSE: A method for fabricating a contact hole and a spacer of a semiconductor device is provided to deposit an insulation layer like a high density plasma(HDP) oxide layer without a void, by forming an interlayer dielectric before the spacer is formed while the interval between conductive layer patterns like bit lines is relatively large. CONSTITUTION: A plurality of conductive layer patterns(81A) are formed on a substrate(80). The interlayer dielectric(84) is formed on the resultant structure. The interlayer dielectric is selectively etched to expose a contact region between adjacent conductive layer patterns and a conductive layer pattern out of the plurality of conductive layer patterns in which at least a sidewall of the conductive layer pattern is adjacent to the contact region. An insulation layer spacer is formed on the sidewall of the exposed conductive layer pattern.
Patent KR-20020047634-A (KR)
Title: Apparatus and method for progress condition notice of communicative washer
Inventor: HAN GYEONG HAE
IPC: G06Q50/00
Filed: 2000-12-13
Abstract: PURPOSE: A laundry machine process status notification system and method is provided to transmit laundry process status, an estimated completion time or mishap data to a preset destination via an e-mail or a telephone line by connecting a laundry machine to the internet so that a user controls a laundry machine at a remote place. CONSTITUTION: The method comprises steps of enabling a user to input a specific e-mail address or a telephone number at a laundry machine, and to select remote report functions on a specific status, i.e. laundry process status, an estimated completion time or mishap data(S1, S2), performing a laundry process at the laundry machine(S3), checking if a preset remote report function has to be performed while performing a laundry process(S4), returning to the step S3 if a preset remote report function needs not be performed, and enabling a web server, installed at the laundry machine, to perform a corresponding remote report function via an SMTP or a service provider to a destination, i.e. a preset e-mail address or telephone number.
Patent KR-20020049366-A (KR)
Inventor: CHOI JAE SEUNG
IPC: H03K19/0175
Filed: 2000-12-19
Abstract: PURPOSE: An input buffer is provided, which prevents an error by having a noise immunity by removing an output swing of the input buffer even at an abnormal input. CONSTITUTION: The input buffer comprises a NOR gate(10) receiving a pad input signal and inverters(12) generating a buffer output. A bouncing of the inverter output is prevented by installing a Schmitt trigger driving part(13) between an output port of the NOR gate and an input port of the inverter and by controlling a driving voltage of the Schmitt trigger driving part with a signal fed back from the output of the inverter. The Schmitt trigger driving part comprises the first block(13-1) providing a driving signal of the inverter by receiving the output of the NOR gate, and the second block(13-2) generating a control signal to control a driving voltage of the first block by receiving the fed back signal from the output of the inverter.
Patent KR-20020049844-A (KR)
Title: Preserver of Wildlife for Flume Duct
Inventor: YUN KWE RO
IPC: E02B13/00
Filed: 2000-12-20
Abstract: PURPOSE: Provided is an apparatus for protecting ecosystem, especially batrachian such as frog and/or sneak got into a flume duct and to escape such animals from the flume duct installed to supply water to desired places. CONSTITUTION: The apparatus comprises a cross bar secured at upper end of both side walls of a flume duct; a top plate(20) closely contacting to uppermost portion of inner side wall of the flume duct; a rising plate(30) having top end inclined and arranged at the top plate by a hinge to downstream of the flume duct and having bottom end placed at floor of the flume duct to form a moderate slope of ecosystemic route from the floor to the top plate of the flume duct. The rising plate(30) further includes a variable component to make its length varied along depth of the floor and a hook portion formed at its upper end extending across the cross bar and hinged with the cross bar.
Patent KR-20020050870-A (KR)
Inventor: JUNG HUI DON
IPC: C21C1/06
Filed: 2000-12-22
Abstract: PURPOSE: A hysteresis management method of a torpedo ladle car is provided to accurately grasp the condition of the torpedo ladle car by continuously measuring a weight of the torpedo ladle car with a load cell. CONSTITUTION: The hysteresis management method of a torpedo ladle car comprises the steps of: measuring a weight(Xn) of the empty torpedo ladle car; comparing the measured weight of the empty torpedo ladle car with a previously measured weight(Xn-1) of the torpedo ladle car; if the weight of the empty torpedo ladle car is smaller than its previously measured weight, comparing the weight of the empty torpedo ladle car with a refractory corrosion resistant minimum value(Xmin) as a minimum weight of the torpedo ladle car; if the weight of the empty torpedo ladle car is smaller than the refractory corrosion resistant minimum value, comparing the weight of the empty torpedo ladle car with a refractory corrosion resistant threshold value(Y); and if the weight of the empty torpedo ladle car is smaller than the refractory corrosion resistant threshold value, repairing the refractory of the torpedo ladle car.
Patent KR-20020051547-A (KR)
Inventor: KIM NAE SU
IPC: H04B15/06
Filed: 2000-12-22
Abstract: PURPOSE: An apparatus for canceling the leakage signal of a local oscillator signal is provided to remove a leakage signal from a local oscillator signal by detecting a reverse phase signal size difference and a phase difference, generated due to the signal path difference between a leakage signal and a reverse phase signal, and controlling the reverse phase signal with the detected differences. CONSTITUTION: An apparatus for canceling the leakage signal of a local oscillator signal is composed of an RF amplifier(20), a frequency converter(30), a band pass filter(50), a generator/adjuster(60), a detector(70), and a combiner(80). The RF amplifier(20) executes low noise amplification for an RF signal received through an antenna. The frequency converter(30) converts the RF signal inputted from the RF amplifier(20) into an IF signal by a local oscillator signal inputted from a local oscillator(40) and outputs the IF signal containing a leakage signal. The band pass filter(50) filters only a specific band among the output signals of the frequency converter(30). The generator/adjuster(60) generates the reverse phase signal of the local oscillator signal, adjusts the gain and phase of the reverse phase signal, and outputs the gain/phase-adjusted reverse phase signal. The detector(70) detects the gain difference and phase difference of the leakage signal inputted from the band pass filter(50) and the reverse phase signal inputted from the generator/adjuster(60), calculates a gain control value and a phase control value through the detected differences, and the calculated control values to the generator/adjuster(60). The combiner(80) combines the output signal of the band pass filter(50) with the output signal of the generator/adjuster(60) and outputs a leakage signal-cancelled IF signal.
Patent KR-20020053472-A (KR)
Title: Amine curing agents and epoxy resins use for protective coating components
Inventor: KIM BONG SU
IPC: C09D163/00
Filed: 2000-12-27
Abstract: PURPOSE: An amine-based curing agent and a corrosion resistant composition containing an epoxy resin is provided, to improve the curability at a low temperature, the adhesive power laminated layers when repainted and the water proofness without deterioration of the chemical resistance and the corrosion resistance. CONSTITUTION: The amine-based curing agent comprises 100 parts by weight of an epoxy adduct amine curing agent; and 5-15 parts by weight of a polyamine curing agent. Preferably the epoxy adduct amine curing agent is prepared by reacting a Mannich base type curing agent and an epoxy resin containing 1-6 intramolecular epoxy groups to make the equivalent ratio of the active hydrogen of the Mannich base type curing agent to the epoxy group of the epoxy resin be 1:0.05 to 1:0.15. The corrosion resistant composition comprises a solid curing resin whose equivalent ratio of the amine active hydrogen of the amine-based curing agent to the epoxy group of an epoxy resin is 1:0.8 to 1:1.2; and 5-20 wt% of a petroleum resin with a softening point of 60-130 deg.C.
Patent KR-20010091879-A (KR)
Title: Method of manufacturing seats of a piston for compressor
Inventor: KAWAI KATSUNORI
IPC: B23C3/02
Filed: 2000-12-28
Abstract: PURPOSE: A method of machining seats of compressor piston is provided to efficiently machine a hemispherical recess and a chamfered portion on the periphery of the recess. CONSTITUTION: A method comprises a chamfering forming process for forming an annular chamfering portion(52b), by relatively rotating cutting tools	 capable of forming at least a part of a spherical surface and a compressor piston(50) and annularly moving the cutting tool around a surface to be worked becoming the recess portion; and a recess portion forming process for forming a hemispherical recess portion(52a) by relatively rotating the same cutting tool and the compressor piston and abutting the cutting tool on the surface to be worked of the recess portion.
Patent KR-20010021714-A (KR)
IPC: G06Q50/00
Filed: 1998-07-10
Abstract: 치료 행동 변경 프로그램, 순응 모니터링 및 피드백 시스템은 서버 기반 관련 데이터베이스, 및 서버에 전자적으로 연결되는 하나 이상의 마이크로프로세서를 포함한다.  시스템은 개인에 대한 일련의 이정표(milestone)을 구비하는 치료 행동 변경 프로그램을 개발함으로써 의학적 질병으로부터 회복되는 자신의 건강을 유지하는데 필요한 생활양식의 변화를 달성하도록 해준다.  프로그램은 구현 (implementation)에 앞서 의사 또는 훈련된 환자조언자에 의해 변경될 수 있다(1012).  시스템은 건강-관련 데이터를 입력하도록 개인에게 촉구하고(1030), 개인이 입력한 데이터를 행동 변경 프로그램 내의 이정표와 상관시키며, 프로그램 이정표의 달성을 위해 개인의 경과를 나타내는 순응 데이터(compliance data)를 발생시킴으로써, 개인의 프로그램에 대한 순응을 감시한다(1050).  전체 시스템은 시스템의 다른 부분에 액세스하기 위한 마이크로프로세서를 제어하도록 개인에 의해 동작 가능한 그래픽 전자 탐색기(graphical electronic navigator)를 포함하는 지원 모티프(motif) 단체 주위에 디자인된다.
Patent KR-20010024018-A (KR)
IPC: H05H1/46
Filed: 1998-09-16
Abstract: A vacuum plasma processor for treating a workpiece with an RF plasma has a plasma excitation coil including a peripheral portion supplying a substantial magnetic flux density to peripheral portions of the plasma. Additional conducting segments spatially adjacent to and electrically connected to a segment of the peripheral portion supply additional magnetic flux having a substantial magnetic flux density to the plasma peripheral portions. The additional conductor segments are in each of four corners of the coil, being connected electrically in parallel or series to coil conductor segments forming the corners. In another embodiment, the coil includes several nested conducting corner segments. In different embodiments, the corner segments are (1) coplanar with the remainder of the coil and (2) closer to the plasma than the remainder of the coil. The coil includes two electrically parallel, spiral like windings, each with an interior terminal connected to one output terminal of a matching network and an output terminal connected via a capacitor to another output terminal of the matching network. The capacitor values and the lengths of the windings relative to the plasma RF excitation wavelength are such that current flowing in the coil has maximum and minimum standing wave values in the peripheral and interior coil portions, respectively. The coil and workpiece peripheries have similar rectangular dimensions and geometries.
Patent KR-20010030611-A (KR)
Title: 기능적 조직 모델 및 관리 컴퓨팅 시스템 및 방법
IPC: G06Q10/10
Filed: 1999-07-16
Abstract: 본 발명은 글로벌 기업에서 합작 컴퓨팅을 지원하기 위한 기본 정보 시스템으로서 기능적 조직 데이터베이스를 제공한다.  이 정보 시스템은 조직 모델링 및 관리 모델(OMM)(90)에 기초하여 설치되고 조직 오브젝트의 쉬운 조작을 위해 시스템 구조(도 8)와 그래픽 사용자 인터페이스(도 10)를 제공한다.  통상적인 접근법과는 대조적으로, 본 발명은 프로세스 모델(44), 애플리케이션 모델(36) 및 데이터 모델(32)로부터 조직 모델(42)을 분리시킨다.  그러므로, 독립적이고 적응성있는 기업 모델링 및 설계는 빠르게 변화하는 비지니스 환경을 더욱 실질적으로 반영한다.
Patent KR-20010032311-A (KR)
Title: 디스크 보호 시트의 부착 장치 및 부착 방법
IPC: G11B23/087
Filed: 1999-09-21
Abstract: 디스크 보호 시트(14)를 절반 부재(3)에 부착하는 장치이다.  이 장치는 절반 부재(3)를 지지하는 지지대(43)를 포함하는 지지 기구와, 디스크의 일부를 외측으로 향하게 하는 개구부(12)보다 크게 절결부(14a)가 설치되고, 열 용융층(14)이 설치된 디스크 보호 시트(14)를, 열 용융층(14c)을 절반 부재(3)의 디스크와 대향하는 면에 대향시키고, 절결부(14a)를 개구부(12)에 대향시켜 절반 부재(3)에 공급하는 공급 기구와, 디스크 보호 시트(14)보다 약간 큰 외형을 갖고 지지 기구에 대향하고 배치되고, 열 용융층(14c)을 용융하여 디스크 보호 시트(14)를 절반 부재(3)에 용착하는 용착 기구(26)를 구비한다.  지지 기구가 용착 기구(26) 측으로 이동되고, 용착 기구(26)와 지지 기구가 상대 이동함으로써, 디스크 보호 시트(14)가 절반 부재(3)의 디스크와 대향하는 면에 용착된다.
Patent KR-20010024794-A (KR)
Title: 휴대용 １­방향 무선 금융 메시지 유닛
IPC: H04N1/44
Filed: 1998-12-04
Abstract: 보안 메시지 시스템은 보안 메시지 시스템 제어기(1100) 및 제1 금융 메시지 유닛(906)을 포함한다.  사용자는 보안 메시지 시스템 제어기(1100)에 트랜잭션 (transaction) 인증 코드를 제공함으로서 금융 트랜잭션을 초기화한다.  제1 금융 메시지 유닛(906)이 값을 포함하는 보안 금융 트랜잭션 메시지를 수신하는 것에 응답해, 사용자는 금융 트랜잭션을 실행하도록 제1 금융 메시지 유닛(906)에 그 값 중 적어도 일부분을 양도하여 지불하는데 대응하는 트랜잭션 인증 코드를 입력한다.
Patent KR-20010040893-A (KR)
Title: 외과 수술용 봉합 기구
IPC: A61B17/00
Filed: 1999-02-09
Abstract: 본 발명은 구멍을 구비한 동체의 형태이고, 그 표면이 실질적으로 회전 표면이 되며, 구멍의 축선 평면으로부터 잔여 구멍이 180°이상의 각도에 면하도록 하는 거리만큼 반경 방향으로 떨어져 있는 평면을 따라 절단되는(그에 의해 본 장치는 마찰을 동반한 채로 착용됨) 하우징; 외과 의사의 손가락을 둘러싸면서도 그 손가락의 말단 손가락 마디의 이면 부분을 적어도 부분적으로 노출시키기 적합하게 형성되는 골무형 부재를 포함하는 손가락 유도식 봉합 장치에 관한 것이다.  골무형 부재는 하우징 내에서 회전 이동되어 대략 반원의 형상의 외과 수술용 바늘을 구동시킬 수 있다.
Patent KR-20010078695-A (KR)
Title: 내연기관내의 촉매활성표면을 제공하고 유지하는 방법
IPC: F02B23/00
Filed: 1999-02-19
Abstract: 촉매활성표면은 그린이고 저작동시간을 가지고 있고 저 배기가스설계로 된 내연기관의 깨끗한 연소노출부분상에 제공된다. 적어도 450℃의 표면온도를 유지할 수 있는 고온표면적의 기판 또는 단열코팅은 연소챔버내에 침착된다. 지르코니아,실리카, 또는 윤활유재는 적당하다. 백금 또는 철과 같은 촉매활성 일부분은 기판의 연소표면에 분산된다. 페로센으로부터의 나노페이스 철 또는 나노페이스 백금은 적당하다. 촉매작용은 엔진에 대한 촉매전구체의 낮은 레벨을 연소차지에 연속적으로 제공함으로써 유지된다.
Patent KR-20010072593-A (KR)
Title: 기침 치료용 조성물 및 기침 치료방법
IPC: A61K31/167
Filed: 1999-06-09
Abstract: 본 발명은 진해 활성을 갖는 제약학적 조성물 및 이 제약학적 조성물을 사람을 비롯한 온혈 동물에 투여하는 방법에 관한 것이다.
Patent KR-20010071560-A (KR)
Title: 가상 데이터 기억 시스템
IPC: G06F12/16
Filed: 1999-06-02
Abstract: 중앙 처리 장치(CPU; 2)를 포함하는 컴퓨터 시스템(12)에서 사용하기 위해 다중의 가상 데이터 기억 장치(16, 18)를 제공하는 가상 디스크 기억 장치(VDS) 시스템에 관한 것이다.  VDS 시스템은 정보를 저장하는 메모리 시스템(6), 이 메모리 시스템과 통신하는 VDS 제어기(12), 및 CPU(2)를 포함한다.  VDS 제어기(12)는 메모리 시스템(6)을 다중의 가상 데이터 기억 장치(16, 18)로 분할한 후, 컴퓨터 시스템이 임의의 이러한 가상 데이터 기억 장치(16, 18)와 통신하는 것을 제한한다.  따라서 VDS 제어기(12)는 적어도 하나의 가상 데이터 기억 장치(16)에 저장된 정보의 파손을 방지하기 위해 적어도 하나의 가상 데이터 기억 장치(16)가 컴퓨터 시스템과 통신하지 못하도록 선택적으로 차단시킨다.
Patent KR-20010053129-A (KR)
IPC: A61F2/44
Filed: 1999-06-22
Abstract: The intersomatic spine implant comprises a body, at least one anchoring element movable relative to the body to project from a contact face of the body making contact with a vertebra, and at least one cam slidable relative to the body and suitable for displacing the anchoring element relative to the body by the effect of a ramp engaging the anchoring element. The cam and the anchoring element are arranged so that the cam moves the anchoring element in two opposite displacement directions.