baber/WOPTO huggingface dataset:
Patent JP-H04215669-A (JP)
Title: Copying device
Inventor: KIKUNO MITSUTOYO
IPC: G03G15/00
Filed: 1990-12-14
Abstract: PURPOSE:To prevent the occurrence of a miss copy due to the mixing of documents between document sets by simplifying the action of a document reset when a transfer paper jam occurs in the double-job mode. CONSTITUTION:When an instruction of the double-job mode is inputted to an instruction input means 1, a control means 400 controls a document feed/ discharge means to feed a document after an image forming means 100 completes the discharge of the transfer paper. The next document is not fed until the transfer paper is discharged in the double-job mode, the feed interval is made wider than that in the normal mode, and the document can be easily reset even if a jam of the transfer paper occurs at this time.
Patent JP-H03291726-A (JP)
Title: Method of minimizing interruption of pipeline treatment of hardware by using software-scheduling technique during compile
Inventor: SUTEIIBUN II KINGU
IPC: G06F9/45
Filed: 1990-12-21
Abstract: PURPOSE: To minimize source ware interruption within a compiled object code by sending an oldest instruction within a buffer to an object module and pushing the signal of a new instruction to the buffer. CONSTITUTION: When the instruction signal of each object code in a small consecutive group enters a scheduling process, the signal is assigned to a pair of attribute words developed from an instruction attribute table. Potential collision between a new instruction and an instruction in the buffer is confirmed in a first sub process by taking AND of the attribute word and the attribute word of another instruction. When there is no collision, an oldest instruction within the buffer is sent to an object module and the newest instruction is pushed into the buffer. When there is collision, whether a colliding instruction within the buffer can be moved or not within the buffer so as to minimize or remove the collision is decided and a second sub-process is executed so as to solve the collision.
Patent JP-H04283075-A (JP)
Title: Sand blast device
Inventor: MATSUSHITA MITSUYOSHI
IPC: H01L21/322
Filed: 1990-12-26
Abstract: PURPOSE:To uniformize a damage and to increase cleanliness by integrally collecting a device which horizontally rotates wafers one by one at a high speed, uniformly sprays sand blast against the whole surface of the wafer through horizontal movement of a grinding grain nozzle and a cleaning nozzle, and removes residual grinding grains. CONSTITUTION:A wafer 14 is fixed to a spinner table 13 having a vacuum chuck 12 and rotated at a high speed. A grinding grain nozzle 1 is scanned from the end of a wafer toward the central part thereof at a speed reversely proportional to a radius so that a uniform amount of grinding grains are injected against a wafer unit area. A superpure water nozzle 2, a surface contaminant removing nozzle 3, and a superpure water nozzle 4 are arranged, in order named, on the rear side of the grinding grain nozzle 1. Immediately after sand blast, residual grinding grains and peeled Si small pieces are removed.
Patent JP-H04129600-A (JP)
Title: Iron stand
Inventor: HENRII MATESUKII
IPC: D06F81/02
Filed: 1990-12-27
Abstract: PURPOSE: To stably support an ironing board in a using state by attaching a tubular foot member to the lower end part of at least one of the front and rear legs of a table and fitting a projection member freely slidably inside a sleeve fitted to the end part. CONSTITUTION: A hollow foot member 20 is connected to legs 10 and 11 by a connection part 12, a sleeve member 30 is coaxially arranged inside the foot member 20 and the outer peripheral surface is almost brought into contact with the inner peripheral surface 29 of the foot member 20. The projection member 40 is concentrically arranged inside the respective foot members 20, the outer peripheral surface 41 is almost brought into contact with the inner peripheral surface 33 of the sleeve member 30 and the projection part 43 of the projection member 40 is projected from the end part of the foot member 20. The flange 22 of the foot member prevents the sleeve member 30 from being detached from the foot member 20 and the flange 46 of the projection member 40 prevents the projection member 40 from falling out from the sleeve member 30.  The outer diameter of a cap member 50 is formed similarly to or larger than the outer diameter of the foot member 20. By this constitution, stability is secured when the projection member 40 is projected at the time of use and the table is miniaturized when it is shortened at the time of carriage.
Patent JP-H04251072-A (JP)
Title: Separating sheet peeling device for adhesive tape
Inventor: KUWAKI KORO
IPC: B65H41/00
Filed: 1990-12-28
Abstract: PURPOSE:To fully automate a process by automatically peeling a separating sheet from a substance where three layers of a work, an adhesive tape, and a separating sheet are formed by means of an adhesive tape stuck to a work, such as a product and a material. CONSTITUTION:A peel cutter 1 inserted between an adhesive tape 11 and a separating sheet 12, a chuck 3 to hold a peeled separating sheet by nipping the separating sheet, and a slider 7 to relatively move the cutter mechanism and the chuck mechanism based on the adhesive tape 11 are provided. In this constitution, the slider 7 is driven by means of air cylinders 2, 4, and 6 or a motor, and the separating sheet 12 of the adhesive tape 11 is automatically peeled.
Patent JP-H04218637-A (JP)
Title: Manufacture of high strength and high toughness aluminum alloy
Inventor: HORIMURA HIROYUKI
IPC: C22C21/00
Filed: 1990-12-18
Abstract: PURPOSE:To manufacture a high strength and high toughness Al alloy by subjecting the stock of an Al alloy having a structure of a solid soln. phase or an amorphous phase to heat treatment to form its structure into a one contg. a chrysanthemum-like phase with specified grain size contg. intermetallic compounds in a specified ratio. CONSTITUTION:By a liquisol quenching method, Al alloy stock having a primary structure of a single phase structure of a solid soln. phase or an amorphous phase or of their mixed phase structure is obtd. As the compsn. of the above alloy stock, the one expressed by AlaXbTc (X denotes Fe, Co, Ni and Cu and T denotes Y, rare earth elements, Zr, Ti, Md and Ca as well as, by atom, 85<=a<=96%, 1<b<=12% and 1<C<=10% are satisfied) is preferable. The above alloy stock is subjected to heat treatment to form a secondary structure cont. >=20% volumetric fraction(Vf) of chrysanthemum-like phase with <=5mum diameter in which a solid soln. phase and an intermetallic compound phase are radially arranged. The above heat treatment is executed in the temp. range of the dissolving temp. of the single phase structure and mixed phase structure or below, e.g. at about 350 deg.C. In this way, the strength and toughness of the above Al alloy can be improved.
Patent JP-H04221108-A (JP)
Title: Information generating pavement road
Inventor: INAGAKI TATSUOKI
IPC: E01F9/506
Filed: 1990-12-20
Abstract: PURPOSE:To reduce useless noise and generate uselful information noise by differentiating along the vehicle traveling direction, the rate of crevice formed in a paved road by means of aggregate or the material of a paving mixture. CONSTITUTION:The rate of crevice in a road paved by providing crevice in the road with asphalt and aggregate is differentiated along the vehicle traveling direction. The material of paving mixture for forming the paved road is also made different along the vehicle traveling direction. Adjustment of frequency is made by the combination of these two. Thus useless noise is reduced and necessary specific information noise can be generated at pertial positions where a vehicle is traveling.
Patent JP-H04217892-A (JP)
Title: Circuit for processing spindle error signal
Inventor: TATEISHI KIYOSHI
IPC: G11B19/28
Filed: 1990-12-20
Abstract: PURPOSE:To prevent a decline in the reproducing error rate and, at the same time, to appropriately control the drive of a motor. CONSTITUTION:At the time of closing spindle servo, the occurrence of cogging which has been an issue is suppressed by directly outputting the output of an amplifier 12 which is an unprocessed signal from an amplifier 15 so that this spindle error signal processing circuit can make the same operations as the conventional motor rotating speed detection circuit does. At the time of frequency measurement, on the other hand, the mean value of driving voltages charged in the capacitor C1 of an LPF 13 which are processed signals is given to each Hall element 1, 2, and 3 as a bias. Therefore, the bias of each Hall element 1, 2, and 3 is stabilized since the same operations as the conventional motor rotating speed control circuit are performed. In addition, since the chattering of an FG pulse is suppressed and the driving voltage to be charged in the capacitor C1 is the mean value of driving voltages immediately before a control signal is switched between an 'H' and 'L' levels, the rotating speed of a spindle is set to the mean value.
Patent JP-H0625877-A (JP)
Title: Corrosion preventive method
Inventor: SAWAMOTO ISAO
IPC: C23F13/00
Filed: 1990-12-17
Abstract: PURPOSE:To stabilize a corrosion preventive state by using a secondary battery which is charged by solar batteries as an external power source at the time of preventing the corrosion of a metallic body to be subjected to corrosion prevention by energizing this body, thereby obviating the stop of energization and maintaining the specified value of the current for corrosion prevention. CONSTITUTION:The secondary battery 9 is charged via a controller 10 for preventing back flow by using the solar batteries 11. The metallic body (aluminum tank for potable water) to be subjected to corrosion prevention and an anode for corrosion prevention are energized via a constant current circuit 12 from this secondary battery 9. The stop of the energization is thus obviated and the value of the corrosion preventive current is kept constant. The corrosion preventive state is thus stabilized.
Patent JP-H04224007-A (JP)
Title: Method and apparatus for joining hot rolled stock
Inventor: MASUDA BUNPEI
IPC: B23K9/025
Filed: 1990-12-26
Abstract: PURPOSE:To join a preceding hot rolled stock and a succeeding continuous rolled stock in a short time to execute hot continuous rolling. CONSTITUTION:The rear end of the preceding hot rolled stock 1 and the front end of the succeeding hot rolled stock 2 are brought into contact with each other. A truck 6 capable of going sidewise along a contact line 3 is mounted on a frame 5. The frame 5 can travel in the moving direction of the hot rolled stock. A cutting torch 7 and a welding torch 8 are set to the truck 6. Immediately after a groove 14 is formed along a contact line 3, the groove is welded and joined by the welding torch 8.
Patent JP-H04215045-A (JP)
Title: Laser inspecting device
Inventor: SAITO NORIAKI
IPC: G01N21/89
Filed: 1990-12-12
Abstract: PURPOSE:To provide a device to facilitate manufacture of a sensor head 5 formed by bundling optical fibers for receiving scanning beams and combining with photoelectric conversion element, in a device to inspect a sheetform object for a defect through scanning of laser beams. CONSTITUTION:A laser inspecting device comprises a laser scanning means 1, a sensor head 5 wherein optical fibers are two-dimensionally arranged, a photoelectric conversion means 6, and a processing circuit. The photoelectric conversion means 6 has a plurality of photoelectric conversion elements, and the optical fibers are divided into pairs corresponding to those of the photoelectric elements. With the increase of a distance by which the optical fiber is parted away from a light receiving center, array density of the optical fibers is coarsened or the size of the optical fiber is increased. This constitution reduces the number of the optical fibers without reducing detecting performance.
Patent JP-H04232391-A (JP)
Title: Variable displacement vane pump
Inventor: ABE AKIHARU
IPC: F04C14/00
Filed: 1990-12-28
Abstract: PURPOSE:To prevent inclination of vane and an offset of rotor and generation of defectiveness of lubrication by adjusting the oil pressure, which works to the lower end side (center side) to push a vane to the outside of the radial direction, so as to be equal in both sides of a rotor. CONSTITUTION:A vane 38 is held in a slit channel of a rotor 37 freely to move in the radial direction. A notch channel 29a in parallel with an axial line is formed in the end of a pump driving shaft 29, to which the rotor 37 is fitted freely to turn, so as to communicate both sides of the rotor 37. The converter oil pressure supplied through the inner peripheral side of the pump driving shaft 29 is led from the notch channel 29a into the center side of a vane ring 39 provided in both sides of the rotor 37 inside of a pump and while in the lower end of the vane 38. Even if the slit channel and an oil passage hole 45 communicating both sides of the rotor 37 are sealed by the vane 38 and the vane ring 39, unevenness of the pressure of the lower end of the vane and defectiveness of lubrication is not generated.
Patent JP-H04238927-A (JP)
Title: Jointing method for precast src beam
Inventor: NAGASHIMA TOSHIO
IPC: E04C3/20
Filed: 1990-12-27
Abstract: PURPOSE:To obtain the joining method of precast SRC beams for requiring no jointing by welding and mechanical joint to need skilful training, at all, and for enabling joint work to be executed even under the bad weather of a rainy weather or the like. CONSTITUTION:The joint sections 12A1 of the beam steel frames 12A of two SRC beams 12 confronted with each other are jointed to each other, and the L-type joint reinforcement sections 12B1a, 12B1b of the under-beam main-reinforcements 12B of the SRC beams a are arranged to be put together from the viewpoint of a side surface. On the upper sides of the joint sections 12A1 of the beam steel frames and the projected sections 12C1 of the upper stirrups of the SRC beams, on-beam main-reinforcements 12E are arranged, and on the peripheries of the joint sections of the beam steel frames, the L-type joint reinforcement sections, and the on-beam main-reinforcements, concrete is placed. Then, just by jointing the joint sections of the beam steel frames, the sections 12B1b in the horizontal directions of the L-type joint reinforcement sections, and the sections 12B1a in the vertical directions are arranged at specified positions in steel frame joint spaces, and by the existence of the sections 12B1a in the vertical directions, sufficient set lengths can be secured, and so jointing excellent in workability and economical property can be performed.
Patent JP-H0672794-A (JP)
Title: Liquid phase epitaxy of single crystal thin film
Inventor: ONO TETSUSHI
IPC: G02B6/13
Filed: 1990-12-28
Abstract: PURPOSE:To grow a single crystal thin film while suppressing the cracking of a substrate easy to crack at the time of epitaxially growing a single crystal thin film waveguide on the substrate. CONSTITUTION:A lithium niobate single crystal is epitaxially grown on a substrate consisting essentially of lithium tantarate. In this case, the lithium niobate single crystal thin film is formed on the lithium tantarate substrate and then cooled. When the temp. of the thin film reaches the Curie point + or -10 deg.C of the substrate, the thin film is kept at that temp. or slowly cooled at a rate of 0.1 to 1 deg.C/ min to relax the stress generated by the phase transition at the Curie point, hence cracking of the substrate is suppressed, and a lithium niobate single crystal thin film is epitaxially grown on the lithium tantarate substrate.
Patent JP-H0625180-A (JP)
Title: Cycloheptimidazolone compound, medicinal composition containing said compound, and medical treatment of circulatory system disease therewith
Inventor: FUIRITSUPU AARU BOBII
IPC: A61P9/00
Filed: 1990-12-11
Abstract: PURPOSE: To obtain new compounds useful as non-peptidic angiotensin II antagonists which are effective for use in contact of hypertension.  
     CONSTITUTION: Compounds of formula I [R 1  and R 2  are each a hydride, alkyl, alkenyl, a group of formula II (T 1  is a hydride, alkyl or the like) or the like; R 3  is an alkyl, alkenyl or the like; n is 1-10; X is a single bond, -O-, -S- or the like; R 5 -R 13  are each a hydride, 1-10C alkyl, 2-10C alkenyl or the like] and their pharmaceutically acceptable esters, amides and salts, such as 4 1 -{12- butyl-6(1H)cycloheptimidazolon-1-yl)methyl}-[1,1'-biphenyl]-2-carboxylic acid, are obtained, for example, by reacting 4,5-dicarboxyaldehydeimidazole with a substd. ketone in the presence of a base such as trialkylamine in a solvent such as alcohol or dimethylformamide at a temp. of 0-80°C for 2-24 hours by a reaction of condensed ring closure. 
     COPYRIGHT: (C)1994,JPO
Patent JP-S57502196-A (JP)
IPC: H01L31/04
Filed: 1981-12-21
Abstract: An improved thin-film, large area solar cell, and methods for forming the same, having a relatively high light-to-electrical energy conversion efficiency and characterized in that the cell comprises a p-n type heterojunction formed of: (i) a first semiconductor layer comprising a photovoltaic active material selected from the class of I-III-VI2 chalcopyrite ternary materials which is vacuum deposited in a thin "composition-graded" layer ranging from on the order of about 2.5 microns to about 5.0 microns ( SIMILAR 2.5 mu m to  SIMILAR 5.0 mu m) and wherein the lower region of the photovoltaic active material preferably comprises a low resistivity region of p-type semiconductor material having a superimposed region of relatively high resistivity, transient n-type semiconductor material defining a transient p-n homojunction; and (ii), a second semiconductor layer comprising a low resistivity n-type semiconductor material; wherein interdiffusion (a) between the elemental constituents of the two discrete juxtaposed regions of the first semiconductor layer defining a transient p-n homojunction layer, and (b) between the transient n-type material in the first semiconductor layer and the second n-type semiconductor layer, causes the transient n-type material in the first semiconductor layer to evolve into p-type material, thereby defining a thin layer heterojunction device characterized by the absence of voids, vacancies and nodules which tend to reduce the energy conversion efficiency of the system.
Patent JP-H10500984-A (JP)
Title: 除草剤としての新規のピロリジン−２−チオン誘導体
Inventor: BARNES NIGEL JOHN
IPC: A01N43/36
Filed: 1995-05-26
Abstract: (57)【要約】
式（Ｉ）（式中、Ｒ 1 およびＲ 2 は、それぞれ独立して、水素、場合により置換された低級ヒドロカルビル、または場合により置換されたヘテロアリールであり、或いは、Ｒ 1 およびＲ 2 は、それらが結合している窒素原子と一緒に複素環式環を形成し；Ｒ 3 、Ｒ 4 、Ｒ 5 およびＲ 6 は独立して、ＨまたはＣ 1-4 アルキルであり；Ｚは、ハロゲン、場合により置換された低級ヒドロカルビル、場合により置換された低級ヒドロカルビルオキシ、場合により置換された低級ヒドロカルビルチオ、ヒドロカルビルスルフィニル若しくはヒドロカルビルスルホニル、シアノ、ニトロ、ＣＨＯ、ＮＨＯＨ、ＯＮＲ 7' Ｒ 7" 、ＳＦ 5 、ＣＯ（場合により置換された低級ヒドロカルビル）、アシルアミノ、ＣＯＯＲ 7 、ＳＯ 2 ＮＲ 8 Ｒ 9 、ＣＯＮＲ 10 Ｒ 11 、ＯＲ 12 またはＮＲ 13 Ｒ 14 であり、ここにおいて、Ｒ 7 、Ｒ 7' 、Ｒ 7" 、Ｒ 8 、Ｒ 9 、Ｒ 10 およびＲ 11 は、独立して、Ｈまたは低級ヒドロカルビルであり；Ｒ 12 は、水素、ＳＯ 2 低級ヒドロカルビルまたはＣＯＲ 15 であり；Ｒ 13 およびＲ 14 は、独立して、低級ヒトロカルビル、低級ヒドロカルビルオキシまたは基Ｒ 12 であり；Ｒ 15 は、ＯＲ 16 、ＮＲ 17 Ｒ 18 、水素または低級ヒドロカルビルであり；Ｒ 16 は低級ヒドロカルビルであり、Ｒ 17 およびＲ 18 は、独立して、水素または低級ヒドロカルビルであり、但し、２個またはそれ以上の置換基Ｚが存在する場合、それらは同じであってよいしまたは異なっていてよいという条件付きであり；そしてｍはＯまたは１〜５の整数である）を有する化合物。
Patent JP-H03502823-A (JP)
Title: 回転可能なロール外套を有するロール
IPC: F16C13/00
Filed: 1989-11-13
Abstract: (57)【要約】本公報は電子出願前の出願データであるため要約のデータは記録されません。
Patent JP-H06511116-A (JP)
Title: オーディオトランスデューサ
IPC: H04R9/04
Filed: 1992-05-28
Abstract: (57)【要約】本公報は電子出願前の出願データであるため要約のデータは記録されません。
Patent JP-H06508196-A (JP)
Title: 汎用流体制御弁
IPC: B60T8/36
Filed: 1992-05-29
Abstract: (57)【要約】本公報は電子出願前の出願データであるため要約のデータは記録されません。
Patent JP-S60500785-A (JP)
Title: 電圧基準回路
IPC: G05F3/22
Filed: 1984-01-04
Abstract: (57)【要約】本公報は電子出願前の出願データであるため要約のデータは記録されません。
Patent JP-H10501148-A (JP)
Title: 紙ロール収容装置
IPC: A47K10/22
Filed: 1995-05-09
Abstract: (57)【要約】
材料（35）のウエブをほぼ円筒状のロール、好ましくはトイレットペーパーその他の材料のロールの外側表面から引出すことができるように構成された収容装置。この収容装置は使い果たしたロールを取替えるために開放することのできるロール容器（１）を含んでいる。容器（１）はロールの軸線と同軸のウエブ取出し開口を含んでいる。容器（１）の一方の端壁に円筒状の案内部材（４）が取付けられ、案内部材の円形周縁は取出し開口（63）の軸線（10）と同軸に整列されまたその直径は未使用のロール（３）の実際上の最初の直径を超えている。案内部材（４）はウエブ（35）が開口（63）を通って引出されるにつれてウエブをロールの円筒状表面から向きを変えるよう作用する。案内部材（４）は回転自在に軸受け（51）されロールの軸線とほぼ同軸に延びる軸線の周りに回転するようになっている。
Patent JP-S63502544-A (JP)
Title: トランジスタ製造方法及び同方法によって製造されたｍｏｓトランジスタ
IPC: H01L21/20
Filed: 1987-01-19
Abstract: (57)【要約】本公報は電子出願前の出願データであるため要約のデータは記録されません。
Patent JP-H10500070-A (JP)
Title: バックラッシュ決定方法
IPC: G01M13/021
Filed: 1995-05-12
Abstract: (57)【要約】
バックラッシュを決定する方法にして、歯車組の一方部材が第１の方向に回転せしめられ、回転位置が予め定めた増分で記録される。歯車組の他方部材の回転位置は一方部材の回転位置の記録と同時に記録される。一方部材の回転方向が反転せしめられ、回転位置の記録が同一の増分で行われ、同時に他方部材の回転位置を記録する。他方部材について記録された回転位置の差が計算されて、歯車組のバックラッシュの量を示すものとなされる。
Patent JP-S61501448-A (JP)
Title: 緩和β−アドレナリン遮断薬
IPC: C07C217/32
Filed: 1985-02-28
Abstract: (57)【要約】本公報は電子出願前の出願データであるため要約のデータは記録されません。
Patent JP-H06500892-A (JP)
IPC: F21V21/04
Filed: 1992-06-26
Abstract: A spotlight mounting device for a suspended ceiling made of a stretched flexible material which may be vertically, transversely and longitudinally adjusted when the suspended ceiling is installed. The device comprises a first U-shaped yoke (1) attached to the real ceiling, a second inverted U-shaped yoke (7) which is adjustable in height relative to the first along elongate side slots, and pivotable relative thereto around locking screws (8), a third U-shaped yoke (13) which is translationally adjustable relative to the second along one elongate slot (12) and rotatably adjustable around a locking pin (14), and a housing (21) which is adjustable in height relative to said third yoke by means of two screws (27 and 28) and receives a spotlight. This device is particularly useful when installing stretched, flexible suspended ceilings.
Patent JP-H01502313-A (JP)
Title: マイクロ波バラントランス
IPC: H01P5/10
Filed: 1988-02-10
Abstract: (57)【要約】本公報は電子出願前の出願データであるため要約のデータは記録されません。
Patent JP-S62502202-A (JP)
Title: 溶融シャフト炉による製鉄におけるまたは関する改良
IPC: F27B1/16
Filed: 1986-03-13
Abstract: (57)【要約】本公報は電子出願前の出願データであるため要約のデータは記録されません。
Patent JP-S60501006-A (JP)
Title: ポリエ−テルイミド−弗素化ポリオレフインブレンド
IPC: C08L79/00
Filed: 1983-04-07
Abstract: (57)【要約】本公報は電子出願前の出願データであるため要約のデータは記録されません。
Patent JP-H11507994-A (JP)
IPC: B31B50/25
Filed: 1996-06-04
Abstract: Sheath-core bicomponent fibers comprising a core of a low-cost, high strength, thermoplastic material, preferably polypropylene or polybutylene terephthalate, completely covered with a sheath formed of polyethylene terephthalate or a copolymer thereof are produced, preferably melt blown to an average diameter of 12 microns or less, and formed into a self-sustaining, three-dimensional, porous element having various applications, principally as an ink reservoir element for a marking or writing instrument, although the porous element may also find utility as a tobacco smoke filter. Other forms of the product have utility in diverse applications where its excellent capillary, absorption and filtering properties are advantageous. The resultant products retain or improve upon the desirable features and processing capabilities of conventional elements, but are substantially less expensive, requiring less high cost polyester for equivalent or better properties.
Patent JP-H07507842-A (JP)
Title: パターン化ウェーハ基体上の膜の化学蒸着（ｃｖｄ）法
IPC: H01L21/285
Filed: 1993-06-09
Abstract: (57)【要約】本公報は電子出願前の出願データであるため要約のデータは記録されません。
Patent JP-S60501164-A (JP)
IPC: E21D20/02
Filed: 1984-04-12
Abstract: In roof bolting, when an anchor rod (24) is to be inserted in a borehole (26) in the rock, a cement grout is ejected as a jet from a nozzle (22) located at the mouth of the borehole to partially fill the hole before the rod is forced into the borehole. The jet of grout should have such a velocity that it reaches the bottom of the borehole. A grout pump (45, 60) forces the grout through a hose (28) to the nozzle (22).