baber/WOPTO huggingface dataset:
Patent KR-20080037556-A (KR)
Title: Apparatus for tracking sun position
Inventor: KIM YOUNG IN
IPC: H02S40/22
Filed: 2007-10-24
Abstract: A solar position tracking apparatus is provided to allow sunrays to always vertically enter the tracking apparatus by tracking the horizontal position and altitude of the sun, which is changed by the rotation of the earth, in real time. A solar position tracking apparatus is intended to track the present position of the sun using incident sunrays when the sun is shifted horizontally and vertically according to the rotation of the earth. The solar position tracking apparatus includes a horizontal direction tracking unit and a vertical direction tracking unit. The horizontal direction tracking unit detects the horizontal position of the sun, and has a horizontal lens unit and a bimetal unit. The horizontal lens unit comprises a hemisphere formed by horizontally coupling two hollow quarter-spheres with each other, with a plurality of convex lenses formed on the outer surface of the horizontal lens unit to focus sunrays. The bimetal unit is positioned inside the lens unit, and operated when the sunrays entering the lens unit are focused. The vertical direction tracking unit detects the vertical position of the sun, and has a vertical lens unit and a bimetal unit. The vertical lens unit is formed by vertically coupling two quarter-circular lens arrays with each other. Each lens array has a predetermined number of convex lenses which are arranged in a row. The bimetal unit is positioned inside each quarter-circular lens array, and is operated when the sunrays entering the lens unit are focused.
Patent KR-20090043189-A (KR)
Inventor: CHYUN CHAN HYUK
IPC: G06K9/46
Filed: 2007-10-29
Abstract: 이미지 처리 방법 및 상기 방법을 수행하는 이미지 처리 시스템이 제공된다.  본 발명의 이미지 처리 방법은, 입력되는 이미지로부터 픽셀별 색상 정보를 추출하는 단계; 상기 추출된 색상 정보별로 픽셀 배열을 분석하고, 상기 분석된 픽셀 배열에 기초하여 상기 이미지를 보정하는 단계; 및 상기 보정된 이미지가 선정된 조건을 만족하는 경우, 상기 이미지를 벌레로서 인식하는 단계를 포함한다. 
       
     해충, 포획, 이미지 처리, 픽셀, 이미지 보정
Patent KR-20090043992-A (KR)
Inventor: JUNG SI YOUNG
IPC: F25D11/00
Filed: 2007-10-30
Abstract: 냉장고 디스펜서의 노즐 장치가 개시된다. 
     개시되는 냉장고 디스펜서의 노즐 장치는 냉장고의 디스펜서에 있어서, 상기 디스펜서로 물을 공급하는 물 공급 배관; 상기 물 공급 배관을 통해 공급된 물의 유출구를 구비하는 노즐; 및 상기 물 공급 배관과 상기 노즐을 연결하여, 상기 노즐의 방향과 높이 중 적어도 하나를 가변시킬 수 있는 플렉서블 배관;을 포함한다. 
     또한, 개시되는 냉장고 디스펜서의 노즐 장치는 플렉서블 배관이 감길 수 있는 배관 감김부를 더 포함할 수 있다. 
     개시되는 냉장고 디스펜서의 노즐 장치에 의하면, 별도의 배관을 연결하는 등의 작업이 없이도, 디스펜서에서 이격된 위치에서 용이하게 디스펜서의 물을 공급받을 수 있고, 노즐의 방향을 조절하는 간단한 작업에 의해, 요구되는 방향으로 용이하게 물이 공급될 수 있는 장점이 있다. 
       
     디스펜서, 노즐, 플렉서블 배관, 배관 감김
Patent KR-20090048904-A (KR)
Inventor: HU GANG SOO
IPC: C10B39/08
Filed: 2007-11-12
Abstract: 본 발명은 CDQ 장입구의 워터 자켓에 이물질의 유입을 방지하여, 워터 자켓 이상에 따른 실링수의 넘침에 의한 장비 손상을 방지하는 CDQ의 장입구 워터 자켓의 이물질 유입 방지장치에 관한 것이다. 
     이를 위한 본 발명은, CDQ 챔버의 장입 호퍼와 연통되게 장착되며 장입구 방향으로 연통홀이 형성된 연통관과, 연통홀에 선택적으로 결합되는 가이드 배관과,  가이드 배관에 일체로 결합되며 가이드 배관과 연통되는 관통홀이 형성된 장입구 커버와, 장입구 커버의 관통홀에 승강 가능하게 장착되며 일단에는 원추형의 돌출부가 형성되어 상승시 관통홀을 밀폐하고 하강시에 관통홀을 개방하는 개폐 슬라이더와, 개폐 슬라이더의 타단에서 길이 방향으로 연장되게 장착되어 개폐 슬라이더의 승강시에 탄성력을 제공하는 스프링부재와, 장입구 커버의 개방시에 개폐 슬라이더를 가압하는 가압부재를 제공한다.  
       
     CDQ, 장입구, 장입구 커버, 장입 호퍼
Patent KR-20090049300-A (KR)
Inventor: CHO JAE YOUN
IPC: G10L25/90
Filed: 2007-11-13
Abstract: 프레임의 파워만으로 강인한 음성 구간을 검출하는 음성 구간 검출 방법 및 장치가 개시되어 있다. 본 발명은 오디오 프레임의 레벨값에 따라 오디오 프레임에 대한 제1차 음성 유무 구간을 판별하는 과정, 제1차 음성 유무 구간의 판별에 따라 현재 및 이전 오디오 프레임의 레벨값을 참조하여 연속되는 오디오 프레임에 대한 잡음의 파워 예측값과 신호의 파워 예측값을 추출하는 과정, 추출된 신호의 파워 예측값과 잡음의 파워 예측값을 비교하여 상기 해당 오디오 프레임에 대한 제2차 음성 유무 구간을 판별하는 과정을 포함한다.
Patent KR-20090049469-A (KR)
Inventor: SONG SUL SEOB
IPC: A62C13/68
Filed: 2007-11-13
Abstract: 본 발명은, 분사밸브의 바디에 후부를 형성하고, 후부에는 전방(외측)으로 개방되고 내측 단부가 유입공(인입공)에 의해 바디의 하단에 결합되는 고압가스용기와 연통되도록 실린더를 형성하며, 실린더의 개방부에는 흡입공이 뚫어진 흡입노즐을 장착시키고, 실린더의 내부에는 코일스프링에 의해 전방으로 탄발되는 피스톤을 장전시켜 피스톤의 전면에 매설된 밀폐패드가 흡입노즐을 밀폐시키도록 된 감압장치가 구비된 고압가스용 밸브에 관한 것으로서, 분사밸브의 바디에 형성된 후부에 감압장치를 설치하여 줌으로서 고압가스용기 및 밸브의 안정을 보장할 수 있고, 소화약제 및 질소가스를 저장할 때에 고압가스용기의 내부에 있는 공기를 감압장치를 이용하여 외부로 방출시키면서 충진시킬 수 있도록 하여 소화약제 및 질소가스를 최대 압력으로 저장시킬 수 있으며, 소화약제가 방출되면서 발생하는 방출압력(흡입력) 즉, 고압가스용기의 내부압력에 따라 감압장치가 작동하여 고압가스용기의 내부압력을 자동으로 조절할 수 있다.
Patent KR-20090053309-A (KR)
Inventor: YU JIN
IPC: H01L23/48
Filed: 2007-11-23
Abstract: 본 발명은 접합되는 납을 함유하는 솔더 및 무연솔더에 황화물 형성원소를 첨가함으로써, 구리층 위에 형성되는 Cu 3 Sn 금속간 화합물의 내부 또는 Cu와 Cu 3 Sn의 계면에서 발생되는 커켄달 간극(Kirkendall void)의 형성을 억제하여 패키지의 신뢰성을 향상시키는 방법에 관한 것으로, 본 발명에 의한 방법에 의하면, 전자패키지의 솔더 접합부에서 빈번히 발생하는 커켄달 간극의 형성을 억제하여 전자부품의 전기적, 기계적, 열적 신뢰성을 향상시킬 수 있다. 
       
     커켄달 간극, 구리, 솔더, 황화물 형성원소, 접합, 전자부품
Patent KR-20090055350-A (KR)
Title: Covering apparatus and handy terminal
Inventor: KIM SUNG DEOK
IPC: H04B1/38
Filed: 2007-11-28
Abstract: A covering apparatus and a portable terminal including the same are provided to selectively open and close the inner portion of a product and to simplify the opening/closing structure by minimizing the overall volume of the product. A second cover(30) is placed at one side of a first cover(20), and moves toward the first cover. By the movement, the second cover is switched to an opening position placed at an upper portion of the first cover or a closing position separated from the upper portion of the first cover. A conversion cam(50) lifts the first cover down by converting the movement of the second cover into a life-up motion.
Patent KR-20080049650-A (KR)
Title: Eyeglass lens processing system
Inventor: TAKEICHI KYOJI
IPC: B24B13/06
Filed: 2007-11-29
Abstract: A system for grinding the edges of eyeglass lenses is provided to reduce difference between a left lens and a right lens at the time of grinding lenses. A eyeglass lens grinding system for reducing difference between a left lens and a right lens includes a data input device through which lens configuration data and layout data for both left and right lenses are inputted, a cup attachment device(1) where a cup for fixing a lens to be ground is attached, and a processing device(200) which holds the lens with a lens chuck and grinds peripheral edges of the lens. The cup(25) for fixing a lens has a rewritable IC(Integrated Circuit) tag(42). The cup attachment device has an input device for inputting identification of a left lens or a right lens and a recording device to write process information including the identification on the IC tag. The processing device has a reader(230) for reading information stored on the IC tag and a setting device for setting process parameters based on the information identified by the reader.
Patent KR-20090057682-A (KR)
Title: Apparatus and method for ip-enabled wireless sensor networks
Inventor: LEE EUN JU
IPC: H04B7/26
Filed: 2007-12-03
Abstract: A domain name apparatus and a method thereof in IP-based wireless sensor network using a new domain naming system are provided to obtain sensor information of a region desired through an internet by using a domain name indicating the kind of a sensor and a geographic location. A sensor node information receiver(110) receives the sensor node information. The sensor node information comprises the location information of a sensor node, the kind of sensing data and IP(Internet Protocol) of the sensor node. A specific local information searching unit(120) searches specific geographical information including an administrative area address corresponding to the location information. A domain name generator(130) produces the domain name of the sensor node and specific geographical information of sensing data. A domain name register(140) binds IP of the sensor node and registers the IP in a domain name server.
Patent KR-20090063803-A (KR)
Title: Nonvolatile memory device using variable resistive element
Inventor: KIM HYE JIN
IPC: G11C16/00
Filed: 2007-12-14
Abstract: A non-volatile memory device using the register is provided, which improves the light performance ability by using the exterior voltage of the high level. A memory cell array(110) comprises a plurality of nonvolatile memory cells. The first voltage generating unit produces the first voltage. The voltage pad receives exterior voltage having the level higher than the first voltage. The sense amplifier receives the first voltage and reads data from the nonvolatile memory cell selected between the memory cell array. The write driver(170) receives the exterior voltage and writes data in the nonvolatile memory cell selected between the memory cell array.
Patent KR-20080058272-A (KR)
Title: Method and slurry for reducing corrosion on tungsten during chemical mechanical polishing
Inventor: SIDDIQUI JUNAID AHMED
IPC: C09K3/14
Filed: 2007-12-21
Abstract: A chemical mechanical polishing(CMP) composition for CMP of tungsten is provided to reduce the degree of tungsten etching while avoiding the use of a large amount of a tungsten etching inhibitor. A chemical mechanical polishing(CMP) composition for CMP slurry of tungsten comprises 0.5-9% of a per-type oxidant, 1-300 ppm of iron, and an anionic fluoro-surfactant, and has a pH of 2.5-7. The CMP composition preferably has a pH of 2.3-6.5, the per-type oxidant includes hydrogen peroxide, and the anionic fluoro-surfactant includes an anionic phosphate fluoro-surfactant. The per-type oxidant is present in an amount of 2-6%, the slurry comprises 3-80 ppm of iron, and the anionic fluoro-surfactant is present in an amount of 20- about 500 ppm.
Patent KR-20090067975-A (KR)
Title: A method for preparing carbon membrane for oxygen enrichment
Inventor: LEE JONG GYU
IPC: B01D71/00
Filed: 2007-12-21
Abstract: A manufacturing method of a carbon membrane for oxygen enrichment having improved permeability and selectivity is provided, wherein the carbon membrane is applicable to an oxygen generator and the like used in an enriched oxygen supply system, an air cleaner, and the like. A manufacturing method of a carbon membrane for oxygen enrichment comprises the steps of: coating a support with a polydimethylsiloxane solution and primarily heat-treating coated support at 700 to 900 deg.C in an oxidative atmosphere for 0.5 to 1 hour to form a silica layer; and coating polyfurfuryl alcohol on the silica layer and secondly heat-treating the coated silica layer at 600 to 800 deg.C in an inert gas atmosphere containing 10 to 20% by volume of carbon dioxide for 2 to 4 hours.
Patent KR-20090069511-A (KR)
Title: Gonadotropin-releasing hormone as an adjuvant of anti-bladder cancer agent
Inventor: KIM MYEONG OK
IPC: A61P35/00
Filed: 2007-12-26
Abstract: A gonadotropin-releasing hormone(GnRH) as an adjuvant is provided to enhance the selectivity of bladder cancer cell of anticancer activator without the effect to cell cycle change and bladder cancer cell proliferation. A gonadotropin-releasing hormone works as an adjuvant for enhancing the bladder cancer cell selectivity of anticancer activator. The expression of mRNA of GnRH and GnRH receptor is detected from all cancer cell lines and human bladder cancer tissue. The position and density of GnRH and GnRH receptor in the bladder cancer epithelial cell is not regular. The GnRH is a central hormone in hypothalamus germ gland axis.
Patent KR-20090069730-A (KR)
Title: Control method of air conditioner
Inventor: CHOI DAE WOONG
IPC: F24F1/00
Filed: 2007-12-26
Abstract: A control method of an air-conditioner is provided to determine abnormality of the filter section simply and execute air volume control effectively based on the determination result. A control method of an air-conditioner comprises a step(215) of sensing the rpm of an indoor fan motor when a reference fan motor driving voltage is applied, a step(220) of comparing the sensed indoor fan motor rpm with the set reference indoor fan motor rpm, a step(235) of determining abnormality of the filter section, a step of determining that the filter section is abnormal when the sensed indoor fan motor rpm is different from the reference indoor fan motor rpm, and a step of indicating an error mode of the filter section or performing air volume compensation(260).
Patent KR-20090070241-A (KR)
Title: Cabin mounting structure for construction machinery
Inventor: JANG HAN KEE
IPC: E02F9/08
Filed: 2007-12-27
Abstract: A construction machinery cabin mounting structure is provided to minimize cost increment because the improvement of form task can be efficiently performed. A construction machinery cabin mounting structure comprises a vertical vibration damping unit(30) and a horizontal vibration damping unit(20). The vertical vibration damping unit comprises a rod-like supporting member which is provided to the bottom surface four spots of a cabin(10), and a spring-loaded unit which is fixed to the car body(11).
Patent KR-20090071013-A (KR)
Title: Gan-based semiconductor light emitting device
Inventor: SAKONG TAN
IPC: H01L33/12
Filed: 2007-12-27
Abstract: A GaN system semiconductor light emitting device is provided to reduce the strain generated in the active layer by including the lattice mismatch buffer layer between the n-type GaN system semiconductor layer and an active layer. An n-type GaN system semiconductor layer(120), an active layer(140), and a p-type GaN system semiconductor layer(150) are laminated successively on a substrate(110). A lattice mismatch buffer layer(130) is included between the n-type GaN system semiconductor layer and the active layer. The lattice constant of the lattice mismatch buffer layer is smaller than the lattice constant of the n-type GaN system semiconductor layer and greater than the lattice constant of the active layer. The n-type GaN system semiconductor layer and the p-type GaN system semiconductor layer comprise the GaN system compound semiconductor. The lattice mismatch buffer layer is formed between the n-type GaN system semiconductor layer and the active layer.
Patent KR-20090071791-A (KR)
Title: Small wind powered generator
Inventor: JANG JUN YEAL
IPC: F03D3/04
Filed: 2007-12-28
Abstract: A small aero-generator is provided to prevent damage of rotary airfoil unit caused by an object which flows in because of strong wind. A small aero-generator comprises a body(10) wherein upper plate and lower plates with plural primary wind inlet ports and lateral plates with secondary wind inlet and outlet are formed; a support plate(20) which is fastened to the outer side of the lateral plate; plural wind concentrating member(30) which is hemispherical on the support plate; a rotary airfoil unit consisting of a rotary shaft and plural airfoils which are fastened to the rotary shaft; and a power generator(50) which converts the torque transmitted from the rotary shaft to the electric energy. The wind concentrating member is connected to plural primary or secondary wind inlet ports through the inlet tube. The rotary airfoil unit is installed inside the lateral plate. The power generator is connected to the rotary shaft.
Patent KR-20090072269-A (KR)
Title: Semiconductor memory apparatus
Inventor: KIM KYOUNG NAM
IPC: G11C11/4076
Filed: 2007-12-28
Abstract: A semiconductor memory device is provided to secure a regular operation margin regardless of a change of an operating environment including a voltage level, temperature, and process in using a system clock of high frequency. A strobe generating part(560) receives an internal strobe signal(PRE-DQS) corresponding to a read command, and drives a plurality of data and an arranged data strobe signal(DQS). A sub driving part(580) receives the internal strobe signal, and outputs a data strobe signal corresponding to a first output data among a plurality of data without delay. The sub driving part includes a first transmission gate, a delay part, and a second transmission gate. The first transmission gate outputs the internal strobe signal as a sub strobe signal during an activation section of a control pulse(QSENPRE-1CLK). The delay part delays the internal strobe signal as a driving time of the strobe generating part. The second transmission gate outputs an output of the delay part as a sub strobe signal during an inactivation section of the control pulse.
Patent KR-20090072369-A (KR)
Title: Cleaning device of after carbon filter in a purifier
Inventor: CHO YOUNG GUN
IPC: B01D35/00
Filed: 2007-12-28
Abstract: A device for removing microorganisms from a post-carbon filter in a water purifier is provided to maintain sanitation of the post-carbon filter by removing water having the microorganisms with an opening/closing valve or a solenoid valve. A device for removing microorganisms from a post-carbon filter includes an opening/closing valve(110), a connection rod(120), and a cock switch(130). The opening/closing valve is formed on one side of the post-carbon filter(100), and discharges water from a lower part of the post-carbon filter. The connection rod opens the opening/closing valve. The cock switch is connected with the connection rod. And the cock switch discharges purified water and is installed at a front side of a purifier. The opening/closing valve includes a valve housing, a disk, and a pinion gear. The connection rod includes a rack gear engaged on the pinion gear. The connection rod is formed with a flexible material of a linear type, and inserted into a guide pipe(135) fixed on the purifier.
Patent KR-20070053297-A (KR)
Inventor: GLOECKNER PATRICK
IPC: C08L33/00
Filed: 2005-07-28
Abstract: 본 발명은 결합제 성분과 알데히드와 케톤의 반응 생성물로 이루어진 냄새가 적은 중합 반응 생성물로 이루어진 방사능감수성 물질에 관한 것이다. 
     방사선-감수성 조성물,
Patent KR-20070057867-A (KR)
Title: Method for manufacturing semiconductor device
Inventor: FUKADA HIROSHI
IPC: H01L21/304
Filed: 2004-09-30
Abstract: In a polishing head (54) of CMP equipment, a diaphragm (113) made of an elastic film is fixed to a carrier plate (102) with a diaphragm fixing ring (120) made of a metal material, and a retainer ring (60) made of a resin material is fixed to the diaphragm fixing ring (120) with a screw (170) from the lower part. A groove is formed on the lower surface (60b) of the retainer ring (60), and a screw hole for fixing the retainer ring (60) with the screw is formed in the groove. A semiconductor wafer (1) is pressed to a polishing pad (58) through a membrane (115) by pressurizing a space sealed by the diaphragm (113) and the membrane (115), and the semiconductor wafer (1) is chemically and mechanically processed.
Patent KR-20080027456-A (KR)
Title: A wheelbarrow
Inventor: MORRIS RICHARD J
IPC: B62B3/08
Filed: 2006-04-19
Abstract: A wheelbarrow comprising a frame, having a top portion (12) and an undercarriage portion (14), an open topped vessel, a pair of handle bars (16, 17), a pair of ground engagable legs (18, 19), a first wheel, a second wheel, a pivot axis means (22) for allowing the top portion (12) of the frame to pivot relative to the undercarriage portion (14) of the frame, and manually controllable linkage means (26, 27, 30, 32) adjustable between first and second positions for allowing a user to link the top and undercarriage portions (12, 14) of the frame when in a first position so that they are unable to pivot relative to each other about the pivot axis means (22), and for allowing a user to unlink the top and undercarriage portions (12, 14) of the frame when in a second position so that they are able to pivot relative to each other about the pivot axis means (22). ® KIPO & WIPO 2008
Patent KR-20070072863-A (KR)
Title: Device for the incremental control of a direct-current motor for the cooling fan of a motor vehicle
Inventor: VOGT RICHARD
IPC: H02P7/288
Filed: 2004-11-30
Abstract: The invention relates to a device (10) for the incremental control of at least one first direct-current motor (12) for the cooling fan of a motor vehicle. Said device comprises a first (14) and a second current-limiting component (16), and a first (22), a second (24) and a third switching element (28). The inventive device is characterized in that the switching elements (22, 24, 28) connect the first (14) and the second current-limiting component (16) in such a manner that the cooling capacity of the cooling fan can be varied in at least four levels different from zero.
Patent KR-20070064670-A (KR)
Title: Information recording medium, apparatus and method for recording information, and computer program
Inventor: YOSHIDA MASAYOSHI
IPC: G11B7/0045
Filed: 2005-10-12
Abstract: Disclosed is an information recording medium (100) comprising a first recording layer (L0 layer) which is provided with a first recording track for recording record information, and a second recording layer (L1 layer) which is provided with a second recording track for recording record information. Each recording zone (zone #n) including one recording area in the first recording layer and another recording area in the second recording layer which is opposite to the recording area in the first recording layer has a management information recording area (RMA) for recording management information (RMD) for recording the record information.
Patent KR-20070104901-A (KR)
Title: Interference estimation in the presence of frequency errors
Inventor: LINDOFF BENGT
IPC: H04B1/10
Filed: 2006-01-27
Abstract: Methods and apparatus for estimating interference level in a receiver are dominated by the receiver's residual frequency error when the interference is low. The interference estimation method can be changed when the interference is low such that it compensates for the effects of residual frequency errors. A method of estimating an interference level includes the steps of detecting an interference level of the received signal; determining whether the detected interference level is low; and if the detected interference level is low, estimating the interference level by at least one of estimating in only a radial direction and de-rotating the received signal before estimating the interference level.
Patent KR-20070100794-A (KR)
Title: Vane pump
Inventor: KISHI YOSHINOBU
IPC: F04C29/02
Filed: 2006-01-31
Abstract: An oil-feeding groove (12) communicating with a pump chamber (2A) is formed in the upper part a bearing section (2B) of a housing (2), and an outside-air groove (14) communicating with outside air is formed at a position 90° away along the bearing section, from the oil-feeding groove. An oil path (11) is formed in the axial direction in a shaft section (3B) of a rotor (3), and a branch path (11a) and an outside-air path (13) are formed in the shaft section (3B). The branch path (11a) is branched off from the oil path (11), in the diameter direction of the shaft section, and the outside-air path (13) is formed in the direction orthogonal to the branch path. Further, the branch path and the oil-feeding groove are communicated and, at the same time, the outside-air path and the outside-air grove are communicated. When the oil path and the oil-feeding groove are communicated when the rotor is stopped, negative pressure in the pump chamber is released by outside air flowing in from the outside-air path, preventing a large amount of lubricant from flowing into the pump chamber. The construction enables the amount of the lubricant flowing into the pump chamber when the rotor is stopped to be reduced to prevent breakage of a vane and also enables the amount of the lubricant consumed by rotation of the rotor to be suppressed.
Patent KR-20070111498-A (KR)
Title: Orthopedic plate system and method for using the same
Inventor: ENSIGN MICHAEL D
IPC: A61B17/86
Filed: 2006-02-18
Abstract: An orthopedic bone fixation device (100) for stabilizing a plurality of bone segments includes a bone plate (110) and a screw assembly (120). The bone plate (110) includes a body defining at least one thru-bore (230), wherein the thru-bore (230) is defined to include a central cavity, the central cavity having a middle diameter (350), an entry diameter (330), and an exit diameter (340), the middle diameter (350) being larger than both the entry diameter (330) and the exit diameter (340). Further, the screw assembly (120) is configured to be coupled to the bone plate (110), wherein the screw assembly (120) includes a bone screw (220) having a head section (410), a thread section (400), and a central bore (440), an expandable ring (210) coupled to the head section (410), and a pin (200) at least partially disposed in the central bore (440), wherein the pin (200) includes a varying outer profile that engages the expandable ring (210) to vary an outer diameter (540) of the expandable ring (210) to lock the screw assembly (120) in the thru-bore (230).