baber/WOPTO huggingface dataset:
Patent CN-1681672-A (CN)
Inventor: RYUJI IZUMOTO
IPC: B21D26/14
Filed: 2003-09-17
Abstract: 本发明提供一种确保规定的强度同时达到轻量化的支承体及支承体的制造方法和充气泄气保用轮胎。为此，电磁成形铝管(54)来制造支承体(支承部)。由此，可以避免加工硬化而可以成形所希望的形状。这时，由设置在金属模(52A、52B)上的排气用孔部排出成形时存在于金属模(52A、52B)和铝管(54)之间的空气，可以高精度地成形支承部。具有由这样成形的铝合金构成的壳体(26)的支承体(16)，可高精度形成为规定的形状的同时被充分地轻量化，如果把含有该支承体(16)的泄气保用轮胎安装在车辆上，可以降低车辆的燃料消耗和提高车辆的操作安全性。
Patent CN-86103008-A (CN)
Title: 中碳空冷锰硼贝氏体钢
IPC: C22C38/04
Filed: 1986-04-30
Abstract: 一种中碳空冷贝氏体钢，采用锰，硼为主要合金元素。热加工后，空冷硬度可大于H RC  50。经回火获得有良好强韧性配合的贝氏体/马氏体复相组织。σ 0. 2≥120kg/mm2，σ b ≥130kg/mm 2 。可免除淬火工序，节省能源，降低成本。 
     本发明钢种可用来制造弹簧等，其性能达到或超过60Si2Mn钢。
Patent CN-1046965-A (CN)
Title: 软轴深井泵专用软轴、制作方法及绕线机
Inventor: LAIHU WU
IPC: F16C1/02
Filed: 1990-05-30
Abstract: 本发明公开了一种软轴深井泵专用软轴，这种软轴具有足够的抗拉强度和抗扭强度，上、下两个接头的设计适合于软轴与地下工作总成和地面泵座总成的安装，本发明还公开了缠绕这种专用软轴的方法和专用工具绕线机。
Patent CN-1070721-A (CN)
Title: 压缩机工况区域稳定装置
Inventor: FORSTER ARNO
IPC: F04D29/42
Filed: 1991-09-19
Abstract: 一种离心式压缩机，包括用于工况区域稳定的装
置。它具有一个通气室，使得在叶轮和进气通道之间
的压力得到均衡，进气通道具有一个进气环，它使对
进气通道中的气流以这样的方式进行影响成为可能，
即既实现工况区域的稳定，而又没有明显效率损失。
通过进气环的改型，可使压缩机适应特殊用户的需
要。
Patent CN-1086188-A (CN)
Inventor: BAIRD JAMES CLARK
IPC: B65D47/08
Filed: 1993-07-17
Abstract: 本发明涉及一种安装在蓄液容器上的盖子，根据
本发明的盖子便于排气和分配液体。
Patent CN-1186819-A (CN)
Inventor: YANG YUMING
IPC: C08L71/00
Filed: 1996-12-30
Abstract: 本发明属于聚芳醚酮/聚苯硫醚合金材料的制备方法。本发明采用热固性聚酰亚胺单体的醇溶液均匀包覆在聚苯硫醚颗粒的表面,在150℃～250℃下进行聚酰亚胺的合成和交联反应,以增加聚苯硫醚与聚芳醚酮两相间的相容性。经熔融挤出加工,制得的聚芳醚酮/聚苯硫醚合金的拉伸强度为93MPa以上,弯曲强度为138MPa以上,弯曲模量为2.7GPa,拉伸断裂伸长率为15.6%以上,简支梁无缺口冲击强度为160KJ/m 2 以上,熔体流动速率为2.2克/10分钟以上。
Patent CN-1175155-A (CN)
Title: 控制图象处理装置的加热器温度的方法
Inventor: YOUNG-SEP LEE
IPC: G03G15/20
Filed: 1997-02-15
Abstract: 一种控制图象处理装置中的加热器温度的方法,该装置带有所述加热器,用于产生固定施加到记录媒体上的色剂所需的热量,所述方法包括以下步骤:当进行连续打印时,提高作为控制基础的打印控制温度,使所述加热器的温度高于一个特定的打印温度;以及控制所述加热器的温度,以便达到所述打印控制温度。
Patent CN-1178374-A (CN)
Inventor: YUKAWA NIRIAKI
IPC: G11B20/00
Filed: 1997-06-27
Abstract: 一种高分辩率图象拾取方法,包括:将捕捉检查目标上的图象信息的图象拾取传感器的每组光接收象素分成多个区域;并针对每个分解的区域捕捉来自检查目标的图象,从而最后用所有光接收象素的区域来捕捉检查目标上的图象信息。
Patent CN-1279772-A (CN)
Title: 带式光纤芯线的制造方法
Inventor: KEN TAKAHASHI
IPC: G02B6/44
Filed: 1998-12-03
Abstract: 一种把平面状地且彼此平行地排列的多条光纤(1)插通到模具孔(11a)内并汇总地涂敷覆盖树脂(2)的带式光纤芯线(3)的制造方法,其特征是:模具孔(11a)内表面和光纤(1)的外表面之间的宽度方向的间隙W对厚度方向的间隙H之比设定为1.0—2.5的范围内。
Patent CN-1283276-A (CN)
Title: 液晶薄膜
Inventor: SHINICHIRO SUZUKI
IPC: G02B5/30
Filed: 1998-12-24
Abstract: 本发明提供一种螺旋轴方向沿膜厚方向不同样平行的胆甾醇型或手性近晶C型取向固定化的光漫射性液晶薄膜,以及螺旋轴方向沿膜厚方向不同样平行且螺矩沿膜厚方向不同样等间隔的胆甾醇取向或手性近晶C型取向固定化的液晶薄膜。
Patent CR-20180481-A (CR)
Title: Elementos reguladores vegetales y sus usos
Inventor: OUFATTOLE MOHAMMED
IPC: C12N15/87
Filed: 2017-03-08
Abstract: La invención proporciona moléculas de ADN recombinantes y construcciones, así como sus secuencias de nucleótidos, útiles para modular la expresión génica en plantas. La invención también proporciona plantas, células vegetales, partes de planta y semillas transgénicas que comprenden las moléculas de ADN recombinadas ligadas funcionalmente a moléculas de ADN transcribibles heterólogas, así como métodos para su uso.
Patent CR-20190243-A (CR)
Title: Magl inhibitors
Inventor: HERTZOG DONALD L
IPC: C07D498/08
Filed: 2017-11-15
Abstract: Provided herein are piperazine carbamates and pharmaceutical compositions comprising said compounds. The subject compounds and compositions are useful as modulators of MAGL. Furthermore, the subject compounds and compositions are useful for the treatment of pain.Se proporcionan en este documento carbamatos de piperazina y composiciones farmacéuticas que comprenden dichos compuestos. Los compuestos y composiciones objeto son útiles como moduladores de MAGL. Adicionalmente, los compuestos y composiciones objeto son útiles para el tratamiento del dolor.
Patent CR-20190546-A (CR)
Title: Methods and compositions for treating sleep apnea
Inventor: WELLMAN D ANDREW
IPC: A61K45/06
Filed: 2018-04-26
Abstract: Methods and compositions for the treatment of conditions associated with pharyngeal airway muscle collapse while the subject is in a non-fully conscious state, e.g., sleep apnea and snoring, comprising administration of a norepinephrine reuptake inhibitor (NRI) and a muscarinic receptor antagonist.
Patent CR-20220547-A (CR)
Inventor: CLARKE MICHAEL O
IPC: C07D487/04
Filed: 2021-04-29
Abstract: La presente divulgación proporciona compuestos de pirimidina diona y composiciones farmacéuticas de los mismos para tratar el cáncer, incluidos los tumores sólidos.<br /> Los compuestos se pueden usar solos o en combinación con otros agentes anticancerígenos.
Patent EC-SP088733-A (EC)
Title: Anticuerpos anti-5t4 y usos de los mismos
Inventor: KUNZ ARTHUR
IPC: C07K16/00
Filed: 2008-09-10
Abstract: Anticuerpos anti-5T4, conjugados de anticuerpo anti-5T4/fármaco, y métodos para preparar y usar los mismos.
Patent EC-SP992980-A (EC)
Title: Estructura absorbente
Inventor: WALLSTROEM LEIF
IPC: A61F13/15
Filed: 1999-06-03
Abstract: La invención se refiere a una estructura absorbente en un artículo absorbente, tal como un pañal, protector para incontinencia, toalla sanitaria, vendaje para heridas, protección para colchones y similares, formada de por lo menos dos capas superpuestas de uno o más materiales absorbentes en forma de trama, dichas capas teniendo diferentes anchos, vistas en la dirección transversal del artículo. La estructura absorbente comprendida de dichas capas ha sido comprimida hasta un espesor que es substancialmente el mismo a todo lo ancho de la estructura, de modo que la estructura tiene mayor densidad en las áreas en donde las capas se sobreponen una a la otra y una menor densidad en otras áreas.
Patent FI-20050181-A (FI)
Inventor: FU XIAOYONG
IPC: C07J/
Filed: 2005-02-16
Abstract: Described is a process for the regioselective dehydration of 11-hydroxy steroids using PCl5, PCl3, POCl3 or either SO2Cl2 and imidazole, or PPh3 and CCl4. The disclosed process selectively forms  DELTA <9,11> steroids from either 11- alpha - or 11- beta -hydroxy steroids, and can also be used for the one-step conversion of 11,21-dihydroxy steroids to 21-chloro- DELTA <9,11> steroids. Also disclosed are processes for the regioselective conversion of 11- beta -chloro steroids to  DELTA <9,11> steroids, and for regioselectively converting an 11,17,21-trihydroxy steroid to a 21-chloro-11,17-dihydroxy steroid.
Patent FR-1578304-A (FR)
IPC: E05F15/67
Filed: 1968-07-31
Granted: 1969-08-14
Abstract: 1,234,990. Door operating mechanism. G. SMAL. 25 July, 1968 [9 Aug., 1967], No. 35486/68. Heading E2M. A door (e.g. an up-and-over door 1 of the type having rollers 2 which run in horizontal guide rails 3 and 4, and rollers 5 which run in vertical guide rails 6 and 7) is joined by a connecting member 10 to a slide 9 which is slidable in a guide rail 8. A motor 18 drives an endless screw 16 (Fig. 5a not shown) which winds a band 14 on to a drum 19. Rigidly attached to the band is a block 13 having a projection 12 which engages with the projection 28 of resilient stop means 11 mounted on the slide 9, continued winding in of the band 14 thus opening the door. When the door is fully opened, the slide 9 abuts against a stop (29, not shown), the projection 12 depresses the projection 28 and the band moves on until the block 13 contacts a lever 31 (Fig. 5a, not shown) which stops the motor. A lock 34 is provided to hold the door closed.
Patent GB-1008766-A (GB)
Abstract: 1,008,766. Measuring temperature electrically; measuring bridges; potentiometers; resistance measurements. BAILEY METER CO. July 23,1962 [July 24,1961], No. 28230/62. Headings G1N and G1U. In a circuit for measuring temperature by comparing the potential drop across a temperaturesensitive resistor with that across a reference resistor, the latter is automatically adjusted to compensate for changes in current through the test resistor due to its resistance change with temperature. As shown (Fig. 1), the p.d. tapped off from a potentiometer 24 is automatically adjusted by resistor 30 to equal that across a temperature-sensitive resistor 10, any required bias being introduced by moving the centre tap 22 of a further potentiometer 20. The voltage across potentiometers 20, 24 is derived via transformer 40 from the p.d. across a resistor 36 in series with temperature-sensitive resistor 10. Hence a reduction in current through resistor 10 producing an undesired drop in p.d. across it, is compensated by a corresponding reduction in p.d. across resistor 36, transformer 40 and potentiometers 20, 24. A similar arrangement is used to measure a temperature difference using two temperature-sensitive resistors in a bridge circuit (Fig. 2, not shown).
Patent GB-1050649-A (GB)
IPC: B41L13/10
Abstract: 1,050,649. Stencils. A. J. C. DE O. BARROS. July 12, 1965 [July 14, 1964], No. 29016/64. Heading B6C. A stencil cylinder comprises a relatively fine imaged mesh screen of little or no structural strength supported on a relatively coarse mesh cylinder having substantial structural strength. The coarse mesh cylinder may be seamless and of wire gauze and the imaged mesh screen may be of nylon or wire mesh stuck or soldered, respectively, to the wire gauze. In the manufacture of the stencil cylinder the fine mesh screen is secured on to a conventional flat frame and imaged. Registration marks, also imaged on the fine mesh, are copied on to a seamless wire gauze cylinder. The imaged fine mesh screen is then transferred to a flexible frame which may be wrapped around the gauze cylinder. Through the use of a manually rotatable collapsible cylinder upon which the gauze cylinder may be temporarily mounted and weights attachable to the flexible frame, the imaged fine mesh screen is attached to the gauze cylinder, the registration marks on both the fine mesh screen and the cylinder being aligned.
Patent GB-1051158-A (GB)
IPC: C23C24/10
Abstract: 1,051,158. Coating with metals &c. BRISTOL SIDDELEY ENGINES Ltd. Feb. 19, 1964, No. 6955/64. Addition to 1, 025, 841. Heading C7F. The subject-matter of this Specification is the same as that in Specification 1, 025, 841 except that either the niobium is replaced by tantalum or the molybdenum disilicide is replaced by tungsten disilicide or both.
Patent GB-1051505-A (GB)
IPC: H04Q3/42
Abstract: 1,051,505. Automatic exchange systems. STANDARD TELEPHONES & CABLES Ltd. July 23, 1965 [July 25, 1964], No. 31512/65. Addition to 1,019,480. Heading H4K. A register in receipt of sufficient digital impulses to connect a forward exchange does so fast enough to be able to release and prepare a path for subsequent impulses to be sent direct to the forward exchange, the register also being able to detect voice frequency digits for which it stays in service for all such digits dialled for a call or until an end signal is received.
Patent GB-1051700-A (GB)
IPC: G11C29/32
Abstract: 1,051,700. Matrix stores. OLYMPIA WERKE A.G. Nov. 29, 1963 [Dec. 8, 1962], No. 47221/63. Division G4C. A matrix core store is tested for faults by writing into each storage location a data word and reading out said data word from the storage location, all the storage locations in the memory being tested in this way. The store described is a 6 x 6 3-plane store for storing 36 3-bit words and having an access register comprising three stages 20, the rows and columns of the store being scanned by ring counters 4, 5 one stage of the counter 4 being connected to the input of counter 5 so that all the storage locations are scanned in succession. Two testing methods are possible, controlled according to the position of a manually-operated two-position switch 28. First testing method.-With the switch 28 in the position shown, a predetermined data word registered in the access register stages 20 is written into each storage location. When the last storage location 31 is reached, an AND gate 30 is opened to change over a switch 25 thereby changing over a further switch 15 to initiate read-out of all the storage locations in turn. The reading and writing cycles can continue indefinitely. An alarm or indicator circuit (Fig. 3, not shown) comprising a comparator, is actuated if the word read out from any location differs from the predetermined word. In a modification, in each writing cycle the complement of the word used for writing in the previous writing cycle is automatically supplied via a circuit (Fig. 2, not shown) including a change-over switch. Second testing method.-With the switch 28 changed over from the position, the clock pulses supplied from 8 to counters 4 are applied also via a frequency doubler 29 to the changeover switch 25 so that the word initially entered in the access register stages 20 is written into the first storage location, read out therefrom, the word read out then being entered into the second storage location and so on. After a test period of any desired length, the word in the access register stages 20 can be compared (by means not described) with the word initially entered, any non-equality indicating that there is a fault.
Patent GB-1051909-A (GB)
Abstract: 1,051,909. Converting. VAKATRONIK WISSENSCHAFTLICHER INDUSTRIE - BETRIEB DRESDEN VEB. Oct. 29, 1964, No. 44134/64. Heading H2F. [Also in Division H1] In a circuit for producing an output A.C. proportional to an applied D.C. 3, the latter is applied over a high resistor 4 to a capacitor (see Division H1), comprising two fixed electrodes 15<SP>1</SP>, 18<SP>1</SP> and a movable insulating diaphragm with metallic coatings 13<SP>1</SP>, 13<SP>11</SP>. An A.C. supply 25 with variable D.C. bias 24 causes the diaphragm to vibrate, thereby varying the capacity between electrodes 13<SP>1</SP>, 15<SP>1</SP> and thus causing an A.C. to appear across resistor 10. In a modification, Fig. 3 (not shown), a metal diaphragm 13<SP>1</SP> may be used.
Patent GB-1054783-A (GB)
IPC: C01G43/00
Abstract: 1,054,783. Uranium oxides; uranium carbide. MINNESOTA MINING & MANUFACTURING CO. June 25, 1963 [June 25, 1962], No. 25314/63. Heading C1A. [Also in Division G6] Spherical particles of uranium oxide are formed by melting a fusible solvated uranium salt, dispersing it in an inert medium to give particles 10-500Á in diameter, and heating the particles below their melting point, preferably under reduced pressure, to remove the solvating solvent and form uranium oxide. Heating below 450‹ C. gives UO 3 , at 450- 800‹ C. gives U 3 O 8 . and at 800-1800‹ C. in a H 2  furnace gives UO 2 . The uranium salt may be uranyl nitrate, oxalate, perchlorate, sulphate or acetate, as a solvate with water, tributylphosphate, ether, ketones, or esters. In a modification, up to 50% finely divided carbon, e.g. carbon black, is added to the molten mixture and UC or UC 2  is formed by sintering the particles at 1600-2400‹ C. Other materials, e.g. SiC or oxides of Zr, Ca, Nb, Pu, Th, Mn, Al, Be and Ce, or a Th compound, may be dissolved or dispersed in the molten salt. Fusion is carried out under reflux or with addition of solvent; the melt is then dispersed by spraying into a cold inert gas, e.g. air or N 2 , or a liquid such as fluorocarbons, e.g. perfluoro cyclic ethers C 8 F 16 O, or hydrocarbons, e.g. hexane, heptane, kerosene; or by dispersing in a hot inert liquid which is chilled or sprayed. The particles are then screened and sized; those suitable are dried and subsequently heated with stirring or fluidization; unsuitable particles are recycled, after removal of any liquid dispersion med ium.
Patent GB-1095467-A (GB)
IPC: A47B17/00
Abstract: 1,095,467. Desks, cabinets. A. CHAUVIN. March 12, 1965, No. 10672/65. Headings A4B and A4H. A cabinet, which may form an end pedestal for a desk, has a frame to which side cladding panels 5 are releasably attached. As shown, rectangular front and rear frames 1, 2 are interconnected by side members 3. Frame members 1a, 2a are formed with a turned over edge 9 and a channel section rib 10, the panel 5 being held by and between the inturned flange 9a and the flat face 10a of the rib 10 with the panel edges concealed within the turned over edges 9. Top and bottom edges of the panel 5 are accommodated in grooved members 13 and 18. A pedestal, Fig. 10, supporting one or both ends of a desk top comprises tubular uprights 18 interconnected by bracing members 19a-c and provided on both sides with cladding panels 5 held against the uprights 18 by flanged metal strips 20 engaged over the panel edges. Back panels may be fitted to a double pedestal desk,
Patent GB-1225495-A (GB)
IPC: A61M5/315
Filed: 1967-06-15
Abstract: 1,225,495. Hypodermic syringe. A. G. WIGGINS. 11 June, 1968 [15 June, 1967], No. 27664/67. Heading A5R. A hypodermic syringe is provided with tangible graduation means to enable a blind person to draw into the syringe a correct dose. The graduation means are provided by a plurality of notches and projections spaced apart longitudinally on the piston or cylinder of the syringe and the means may be rendered audible by a spring cooperating with the notches and projections to form a click-stop arrangement. As shown in Fig. 1, notches and projections are provided on the piston rod 44 so that as the piston is moved relative to the cylinder, the relative distance moved and thus the dose drawn into the syringe, or ejected therefrom is gauged by the patient counting with his thumb nail the number of notches or projections which the piston rod has moved relative to the cylinder part. In one embodiment comprising the disposable piston part of Fig. 9 (not shown) the piston rod has four longitudinally extending ribs, each having a different number of notches. In another embodiment, the notches and projections are provided on a sleeve fitted over the piston rod and secured thereto. A stop member sleeve may be fitted on the piston rod or over said graduated sleeve. The cylinder 24 shown in Fig. 11 is provided with notches and projections 56 and 60 and spring limb 88 is secured so as to move with the piston part 22. End 90 of the limb either overlies the notches and projections to indicate the piston level, or spring- engages the notches to provide, in addition, audible graduation means. Alternatively, the notches and projections are provided on a bracket 92 and the knob 52 forms an indicator by cooperating with the notches and projections to provide the graduation means.
Patent GB-1225822-A (GB)
IPC: B21J13/10
Filed: 1968-02-09
Abstract: 1,225,822. Forging manipulators. DAVY & UNITED ENG. CO. Ltd. 31 Jan., 1969 [9 Feb., 1968], No. 6507/68. Heading B3H. A forging manipulator comprises a carriage 1 with a peel 14 suspended by links 9 from the carriage so that the peel can be displaced in a horizontal plane in a direction transverse to the peel axis. The carriage has side walls 2, 3 against which buffers 23 on piston-rods 21 of double-acting hydraulic cylinders 18 act. The cylinders are arranged at the front and rear of a frame 8 which supports the peel in bearings (12), (13), Fig. 1 (not shown). The carriage has a pair of transverse shafts 7 and each end of each link 9 is mounted on one of the shafts or the frame by a spherical joint.
Patent GB-1227244-A (GB)
IPC: C07C47/21
Filed: 1968-06-13
Abstract: 1,227,244. Epoxyocimenes. R. FIRMENICH, G. FIRMENICH, R. E. FIRMENICH, and F. H. FIRMENICH, [trading as FIRMENICH & CIE]. 13 June, 1968 [15 June, 1967; 14 Dec., 1967], No. 19056/70. Divided out of 1,227,243. Heading C2C. [Also in Division A5] The novel compounds cis- and trans-epoxyocimene of formula are prepared by epoxidizing the non-conjugated double bond of the corresponding ocimene by means of a peracid in a buffered medium, e.g. with peracetic acid in methylene chloride in the presence of sodium acetate. In a preferred process the solution is cooled to 0 C. and the epoxidizing agent added at such a rate that the temperature rises to 20-25 C. and remains at this level without interrupting the cooling.
Patent GB-1229658-A (GB)
IPC: B41B21/32
Filed: 1968-05-20
Abstract: 1,229,658. Photographic type-composing. ELTRA CORP. 20 May, 1968 [20 June, 1967], No. 23862/68. Heading B6W. [Also in Divisions G2-G3] A photocomposing machine has a film magazine 10 in which the film 12 is fed to a rotatable, perforated drum 15 acting as a platen, a vacuum being continuously applied to the inside of the drum during film exposure and film advance so as to cause the film to be pulled against the platen. The film is fed into an input feed slot 13 and enters lower film guide channel 14 to pass beneath a film feed starwheel member 31. Upon manual rotation of member 31 one of the four roller projections 34 frictionally engage the film to advance it a short distance during contact. The drum is driven by a stepping motor (23), Fig. 1 (not shown), and is delivered to an output film slot 17. A shutter 24 co-operates with an aperture in the drum housing and is actuated by a crank 27 rotating with shaft 28. Air enters the magazine through a baffle 48 and air filter unit 49. A knife 25 cuts the film when a desired length of film has been exposed.
Patent GB-1238799-A (GB)
IPC: F16K1/22
Filed: 1969-02-18
Abstract: 1,238,799. Valves. EATON YALE & TOWNE Inc. 18 Feb., 1969 [6 March, 1968], No. 8809/69. Heading F2V. A butterfly valve comprises a generally planar elliptical plate 32 mounted on a spindle 18, and disposed at an angle of less the 90 degrees, e.g. 60 degrees, to the axis of a flow bore 21, in the closed position. The plate 32 is formed with a resilient portion, e.g. of rubber, having a peripheral wall 40 extending at an angle with respect to end walls 38, 39, so as to be inclined away from the bore wall to provide a back rake in the closed position of the valve, and a metal backing plate 47. A lip 43 on the trailing portion is arranged to deform under fluidpressure to seal the valve in the closed position. The axis of the spindle 18 is off-set from the axis of the bore 21, to provide a moment in the closed position tending to force the plate into contact with the bore 21. During assembly, the plate is welded to the spindle at 50, the operation being carried out with the two parts in the assemble position. The valve is intended for use in a motor car heater, and is operated by a vacuum motor (11), Fig. 1 (not shown). The valve can be operated by a solenoid, or thermostatic means.
Patent GB-1250867-A (GB)
IPC: C07D315/00
Filed: 1970-04-27
Abstract: 1,250,867. Pivalolactone. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 27 April, 1970, No. 20036/70. Heading C2C. Pivalolactone is prepared by neutralizing α,α-dimethyl-#-chloropropionic acid with aqueous ammonia to a neutralization level of not more than 97%, extracting the aqueous solution thus formed with a water-immiscible organic solvent for pivalolactone so as to obtain in the organic solvent a first solution of pivalolactone and the unneutralized part of the acid, extracting this acid from the first solution by means of an aqueous second solution of a base containing 0À9 to 2-0 equivalents of base per mole of acid present in the first solution, and recovering the acid, or a derivative thereof, and pivalolactone present in the first solution, provided that ammonia is not used as the base if the first solution is in contact with the second solution for more than 15 minutes. Suitable specified solvents are unsubstituted or substituted aromatic hydrocarbons, and halogenated aliphatic hydrocarbons e.g. 1,2-dichloroethane, or mixtures thereof. The extraction is preferably carried out at a temperature of from 50‹ to 70‹ C.
Patent GB-1251934-A (GB)
IPC: B60N2/16
Filed: 1970-09-21
Abstract: 1,251,934. Seat adjustment. FORD MOTOR CO. Ltd. Sept.21, 1970 [Oct. 2, 1969], No.44820/70. Heading A4J. The height of a vehicle seat 1 is adjusted by rotation of cams 6, 7 mounted on each side of the seat and connected by transversely extending shafts 4, 5, respectively, the rotation of the cams being effected by the operation of a reversible ratchet mechanism 17. The cams 7 mounted at the rear of the seat are larger than the front cams 6, so that the rear of the seat is raised or lowered to a greater extent than the front of the seat.