baber/WOPTO huggingface dataset:
Patent CN-1040078-A (CN)
Inventor: SCALZO AUGUSTINE J
IPC: F01D9/04
Filed: 1989-07-31
Abstract: 本发明为一种燃气轮机，包括：外壳(50)和转子(40)，转子包括许多旋转刀片(42)。燃气轮机还有一个带膜片组件的压缩部件(34)。膜片组件包括带有一起整体形成的内套环(68)的叶片翼剖面(66)和外环子组件(72)。外环子组件(72)上具有与以一个错列角分布的用于接受叶片翼剖面(66)的槽，这些槽最好垂直于流径叶片(66)气流产生的力矢量伸展。
Patent CN-1042447-A (CN)
Title: 用于阴极射线管荧光屏的预涂组合物
Inventor: KIM HYUN-SANG
IPC: C09D129/04
Filed: 1989-10-27
Abstract: 一种用于制造阴极射线管荧光表面的预涂组合物，其中含有作为预涂层基质的粘合剂，用以使粘合剂光敏化的光敏剂，用于增强预涂层粘结强度的粘结增强剂，纯水及其它成分，其特点是应用硝酸铝作粘结增强剂。按本发明的预涂组合物的粘结强度并不低于常用的含硫酸钠铝组合物的粘结强度，同时其固化速度不象常用组合物般快速，因而涂布溶液时，不会产生部分过早的固化情况。
Patent CN-1077578-A (CN)
Inventor: DEYU LING
IPC: H04B7/24
Filed: 1992-04-15
Abstract: 一种响应于两个网络的广播的寻呼机，该寻呼机
包括一个射频接收机级，该接收机级由以下部件组
成：两个本机振荡器，每个用于一个寻呼网络，一个天
线、一个放大器和一个用于振荡器的一个或另一个振
荡频率与来自天线的信号相混频的混频器；一个中频
级；和一个控制系统，该系统以电子的方式接通和关
断各本机振荡器并以电子的方式调谐天线、放大器和
带通滤波器。
Patent CN-1074172-A (CN)
Title: 制冷压缩机用垫片的加工技术
Inventor: YUSHAN LI
IPC: B29D7/00
Filed: 1992-12-03
Abstract: 一种制冷压缩机用垫片的加工技术，将冲压出来
的橡胶石棉垫片的加工部分边缘进行旋剪。经旋剪
后的垫片浸涂胶液，然后用塞具将加工部分边缘进行
塞光，使边缘圆润光滑。经本技术加工的橡胶石棉垫
片，加工部分边缘光滑，无毛刺，在使用过程中毛刺不
易脱落，符合压缩机使用要求。
Patent CN-1106028-A (CN)
Inventor: FELIX BERND
IPC: C08F214/26
Filed: 1994-09-24
Abstract: 在用悬浮法制备全氟-(烷基乙烯基)醚单元含
量为0.02到1％(重量)的聚四氟乙烯时，若不用铵
盐的形式聚合反应助剂，将可获得在加热时不会变色
的聚合物。
Patent CN-1108848-A (CN)
Inventor: GOVE ROBERT J
IPC: H04N9/78
Filed: 1994-09-30
Abstract: 本发明提供一种数字电视接收机(10)的彩色分
离器(12)，输入电视信号直接进入彩色分离器(12)两
个不同的通路中。沿着第一通路，模拟分离器Y
(12a分离出亮度分量，然后，A/D转换器以提供所
希望的每显示行取样数的速率对它进行取样。沿第
二通路，A/D转换器(12C)以适用于数字彩色分离
的速率对组合信号进行取样，然后用数字分离器C
(12d)分离色度取样信号。然后换算单元(12e)换算
色度取样信号，提供所希望的每行承样信号数。
Patent CN-1111664-A (CN)
Inventor: HERZIG PAUL
IPC: C09B29/09
Filed: 1995-02-10
Abstract: 式(1)的分散偶氮染料，式中R 1 ，R 2 ，R 3 和R 4 的定义详见说明书。 
     式(1)的新的分散偶氮染料特别适合于聚酯织物材料的染色。
Patent CN-1132098-A (CN)
Inventor: WENDE YANG
IPC: A61K38/21
Filed: 1995-03-30
Abstract: 本发明涉及一种人白细胞干扰素[HuIFN-α]的液态或冻干另附溶剂的喷雾剂，它除含有人白细胞干扰素外，还含有保护剂、防腐剂和稳定剂的白蛋白、苯酚和EDTA-2Na。该喷雾剂用于防治呼吸道病毒性感染或带状疱疹和单纯性疱疹等局部病毒性感染。
Patent CN-1137710-A (CN)
Title: 发射-接收机
Inventor: SHUJI NISHIMURA
IPC: H04B1/3822
Filed: 1996-03-05
Abstract: 本发明目的是在带有发射和接收电路的发射-接收机中减弱各电路间的干扰。石英晶体振荡器作为本地振荡器的公共参考信号源，其频率之间的关系是使得本地振荡频率和发射-接收机内的中频等互相不重迭。在发射和接收电路之间的干扰被减弱以防止特性恶化、寄生辐射等。藉此，发射-接收机的尺寸和重量可减小。藉共用高频率稳定度的石英晶体振荡器，易于获得射频信道间隔的窄频带。
Patent CN-1155081-A (CN)
Inventor: YASUAKIO DAIKU
IPC: G01N35/00
Filed: 1996-08-09
Abstract: 一个用于液样分析的装载液体的简单装置，该装置包括有机大分子材料，表面分成不同的区域，每个区域相对于液体的接触角互不相同，一个区域被另一个区域包围着。对于检测液体的分析，该装置能使甚至微量液体的装载变得容易并为分析提供足够量的精度。
Patent CN-1193659-A (CN)
Title: Iv型胶原酶特异性人源基因工程抗体
Inventor: YAN XIYUN
IPC: A61K39/395
Filed: 1997-03-17
Abstract: 一种Ⅳ型胶原酶特异性人源基因工程抗体。主要是构建了Ⅳ型胶原酶的抗体基因,它是由705个核苷酸组成,由该基因所表达的Ⅳ型胶原酶特异性人源抗体是由235个氨基酸组成。该抗体能够与Ⅳ型胶原酶特异结合,它能够广泛用于与抑制Ⅳ型胶原酶有关的肿瘤病的治疗。
Patent CN-1201074-A (CN)
Inventor: LI LAIFENG
IPC: C22C37/00
Filed: 1997-05-30
Abstract: 本发明涉及纳米铁－碳合金及制备方法和用途,特征在于该纳米Fe－C合金不需冶炼,只需将一定配比的铁粉和碳粉放入球磨机中球磨,即可合成纳米Fe－C合金粉,之后,再经冷等静压,热等静压即制得本发明的纳米Fe－C合金,其Fe－C配比为94.5—93.5∶5.5—6.5,晶粒尺寸10—20纳米,Fe、Fe 3 C两相共存,硬度为HRC60—63,断裂韧性为70—120MPa.m 1/2 ,可用作高速工具钢刀具材料或耐磨、耐蚀器件材料,制备简单,成本低,适宜工业化生产。
Patent CN-1239327-A (CN)
Inventor: KAWAMURA MASASHI
IPC: H01L25/10
Filed: 1999-06-14
Abstract: 具有U形剖面的“外壳和热沉”5以下面的方式装配到存储器模块10上:存储器模块10插在“外壳和热沉”5的U形深槽内，安装在印刷电路板1的每个表面上的所有的封装存储器IC3和其它的部件由“外壳和热沉”5覆盖，硅滑脂6填充到“外壳和热沉”5和封装的存储器之间。每个封装的存储器中产生的热通过硅滑脂6传导到“外壳和热沉”5，热从“外壳和热沉”5的表面散发出。此外，安装在印刷电路板1上的所有的部件都由“外壳和热沉”5覆盖。
Patent CR-20110061-A (CR)
Title: Uso de dronedarona para la preparacion de un medicamento para la prevencion de ictus o ataque isquemico transitorio
Inventor: DAVIDE RADZIK
IPC: A61K9/28
Filed: 2011-02-02
Abstract: Uso de dronedarona para la preparación de un medicamento para la prevención de ictus o ataque isquémico transitorio.
Patent CR-20110329-A (CR)
Title: Composiciones acuosas fluidas de concentrados de un herbicida de dinitroanilina microencapsulado
Inventor: CANNAN TERRANCE M
IPC: A01N25/28
Filed: 2011-06-14
Abstract: Composiciones acuosas fluidas de concentrados, de un herbicida de dinitroanilina microencapsulado, en particular, pendimetalina, que son fluidos y poseen estabilidad mejorada en el almacenamiento. Las composiciones contienen:i.50 a 400 g/l de un herbicida de dinitroanilina en forma de microcápsulas que comprenden un material de núcleo que contiene el herbicida de dinitroanilina;ii.100 a 500 g/l de una sal de glifosato que es disuelta en la fase acuosa yiii.por lo menos una sustancia de superficie activa aniónica.
Patent CR-20150272-A (CR)
Title: Derivado de hidantoina
Inventor: NISHIMURA YOSHIKAZU
IPC: C07D519/00
Filed: 2015-05-21
Abstract: La presente invención proporciona compuestos representados por la fórmula (I) que se muestra a continuación y sus sales farmacológicamente aceptables: en donde R1, R2, R3, y R4 son como se definen en las reivindicaciones.
Patent CR-20210284-A (CR)
Title: Pyrazoles as modulators of hemoglobin
Inventor: ROBINSON JR RALPH PELTON
IPC: C07D471/04
Filed: 2019-11-26
Abstract: The invention relates to pyrazole derivatives, to their use in medicine, to compositions containing them, to processes for their preparation and to intermediates used in such processes. More particularly the invention relates to HbS modulators of formula (I) or tautomers thereof, or pharmaceutically acceptable salts of said modulators or tautomers thereof, wherein X, Y, R<sup>2 </sup>and R<sup>3</sup> are as defined in the description. HbS modulators are potentially useful in the treatment of a wide range of disorders, including sickle cell disease (SCD).
Patent EC-SP055965-A (EC)
Title: Oxatiincarboxamidas
Inventor: RIECK HEIKO
IPC: C07D/
Filed: 2005-08-11
Abstract: Nuevas oxatiincarboxamidas de la fórmula (I) en la queG1, G2, G3, n, R1, R2, R3, R4, R5 y Z tienen los significados indicados en la descripción, varios procedimientos para la obtención de estos productos y su empleo para la lucha contra los microorganismos indeseados, así como nuevos productos intermedio s y su obtención.
Patent EC-SP077398-A (EC)
Title: Pirimidinas como antagonistas del receptor de prostaglandina d2
Inventor: GILLESPY TIMOTHY ALAN
IPC: C07D239/46
Filed: 2007-04-13
Abstract: La presente invención se refiere a un compuesto de Fórmula (I) (I)en la que Cy1, Cy2, L1, L2 y R1 son como se definen en este documento, a una composición farmacéutica que comprende una cantidad farmacéuticamente eficaz de uno o más compuestos de acuerdo con la Fórmula (I) en mezcla con un vehículo farmacéuticamente aceptable, a un método para tratar a un paciente que padece un trastorno mediado por la PGD2 incluyendo, pero sin limitación, asma bronquial, enfermedad pulmonar obstructiva crónica (COPD), rinitis alérgica, dermatitis alérgica, conjuntivitis alérgica, bronquitis, mastocitosis sistémica y lesión de reperfusión isquémica por medio de la administración a dicho paciente de una cantidad farmacéuticamente eficaz de un compuesto de acuerdo con la Fórmula (I).
Patent EC-SP982501-A (EC)
Title: Derivados de eritromicina
Inventor: WU YONG JIN
IPC: A61K31/35
Filed: 1998-05-07
Abstract: El invento se refiere a compuestos de la fórmula (gráfico), y a sales farmacéuticamente aceptables de los mismos, en la que R es como se ha definido en este documento. La invención también se refiere a composiciones farmacéuticas que contienen los compuestos de fórmula I, a procedimientos para usar dichos compuestos de fórmula I en el tratamiento de infecciones y a procedimientos para preparar dichos compuestos de fórmula I.
Patent EC-SP993029-A (EC)
Title: Regulador de trafico multifuncional
Inventor: ERITJA ORNAT JUAN RAMON
IPC: G08G1/08
Filed: 1999-06-18
Abstract: El regulador constituye un equipo electrónico basados en la aplicación de microprocesadores y elementos de conmutación, de estado sólido, lo que le confiere una gran flexibilidad y capacidad funcional en reducidas dimensiones, estando dicho regulador formado por una serie de módulos debidamente asociados e integrados en una caja para su emplazamiento en el cruce a controlar. Básicamente incluye un módulo (1) como fuente de alimentación; un módulo (2) como unidad central dotada de un microprocesador (9), un bloque de memoria (10), un puerto de comunicaciones para canal de operador (13) y otro para canal remoto (14), un bloque de control de salidas (15) y salida de periféricos (12) en conexión con un módulo (3) con detectores (17), con un bloque incluyendo además el regulador módulos de salida (4) con microcontrolador (22) para el control semafórico correspondiente, complementándose con un modem (5) conectado con el módulo de la unidad central (2) y con una central de zona externa.
Patent EC-SP993050-A (EC)
Title: Un producto absorbente tal como una toalla sanitaria, un protector de incontinencia, un forro de interiores o semejante
Inventor: SAMUELSSON ANNIKA
IPC: A61F13/15
Filed: 1999-07-08
Abstract: La invención se refiere a un producto absorbente tal como una toalla sanitaria, un protector de incontinencia, un forro de interiores o semejante que tiene una forma esencialmente alargada con una parte superior y una parte inferior, además tienen 2 porciones extremas y una porción central ubicada entre las porciones extremas. La parte superior del producto tiene una porción prominente en la porción central. La porción prominente contiene un material absorbente capaz de absorber durante el mojado. El producto comprende medios para controlar la dilatación en la porción prominente durante el mojado.
Patent GB-1052101-A (GB)
IPC: A01K93/00
Abstract: 1,052,101. Fishing floats. R. W. HARE Ltd. Dec. 15, 1964 [Jan. 2, 1964], No. 175/64. Heading A1A. A float of unitary structure has an aperture at one end communicating with a side edge of the float for effecting a readily releasable, sliding connection with a line.
Patent GB-1084293-A (GB)
IPC: C04B35/51
Abstract: 1,084,293. Piezoelectric elements. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. Jan. 7, 1966, No. 819/66. Heading H1E. [Also in Division C1] A piezoelectric ceramic comprises a solid solution of a base material selected from those defined by and included within the area A, B, C, D, E, F, G of Fig. 2 and containing an excess of magnesia. Optionals are 0À1- 3% of at least one of the oxides of iron, manganese, nickel, chromium and cobalt; and up to 20 atom per cent of the lead can be substituted by Sn, Ba and/or Ca. Values bf dielectric constant, planar, coupling coefficient and the mechanical quality factor are given for numerous examples. Discs made of the composition are polarized by application of 4 kV/mm. for one hour at 100‹ C. in a bath of silicone oil.
Patent GB-1143726-A (GB)
IPC: C07C271/06
Abstract: 1,143,726. Substituted acetanilides. STAUFFER CHEMICAL CO. 5 Sept., 1967, No. 40427/67. Heading C2C. [Also in Division A5] m - (N - methylcarbamoyloxy) acetanilide is prepared by reacting m-hydroxyacetanilide and methyl isocyanate in chloroform and using triethylamine and dibutyl tin dilaurate as catalysts. The product has a m.p. of 155-7‹ C. The corresponding propionanilide and iso- or n-butyranilides may be prepared in analogous reactions.
Patent GB-1143813-A (GB)
IPC: D01H11/00
Abstract: 1,143,813. Cleaning textile machines. LUWA A.G. 19 May, 1966 [20 May, 1965], No. 22278/66. Heading F4X. [Also in Division D1] Pneumatic cleaning of a row of textile or spinning machines and of the floor space 56 between the machines of such a row, of which only the last two 4 and 6 are shown, is achieved by providing each such machine with a travelling blower 12; on all but the last machine 6 the delivery side of the blower is connected to two pipes 14 and 30, having nozzles 16 and 34 respectively, which produce air streams parallel and adjacent the floor flowing in the same direction towards the last machine 6 of the row, the machine 6 having a sieve-like screen 38 with a travelling nozzle 48 which is disposed adjacent to it, opens towards both the screen 38 and floor 56, and is connected, through a pipe 46 and filter, to the suction side of the blower 12. Disposed along the upper extremities of pipes 14 and 30 and 14 and 32, further blowing nozzles (18, 20, 28, Fig. 2, not shown), are provided for cleaning the top of each machine. In operation, dust from underneath machine 4 is blown by nozzle 34 into the passageway 56 from where it is passed toward the adjacent machine by nozzle 16, this process being repeated until the last machine is reached, wherein dust trapped on the screen 38 is removed by the suction nozzle 48. The floor space under the last machine 6 is cleaned by the air stream from a nozzle 36 which is directed over the top of screen 38, and the screen itself is cleaned by an air stream from a further nozzle (54, Fig. 2), both the nozzles being supplied by pipe 32. If necessary, each machine may be provided with a screen 38 and a suction nozzle adjacent the screen.
Patent GB-1227263-A (GB)
IPC: H03G3/30
Filed: 1969-05-16
Abstract: 1,227,263. Automatic gain control. SYLVANIA ELECTRIC PRODUCTS Inc. 16 May, 1969 [16 May, 1968], No. 25186/69. Heading H3T. In an automatic gain control arrangement for a television receiver the gain of a transistor R.F. amplifier is decreased by increase of collector current, while the gain of an I.F. amplifier is descreased by decrease of collector current. A.G.C. is developed by transistor 101, to the base of which the video signal is applied, line fly back pulses being applied to the collector from transformer winding 115: the output is smoothed by filter network 107, 109 and applied to the base of an emitter-follower 103. An A.G.C. voltage which is increasingly positive as the signal strength increases is applied to the base of R.F. amplifier transistor 51, which is so biased by means of resistors 55, 57 that initially the change in base bias does not cause a decrease in gain. Beyond a predetermined signal level, however, increase in the base bias causes an increase in collector current which reduces the gain. The A.G.C. voltage is also applied over a diode 93 to the emitter of I.F. amplifier transistor 91, so as to reduce its current and the gain. Beyond a predetermined point the diode 93 cuts off, and for A.G.C. voltages beyond this level the gain of the I.F. amplifier is not altered. Diode 93 is shunted by resistor 97 in series with D.C. blocking capacitor 99, while the base to emitter circuit of transistor 71 is shunted by a network 91 which may comprise resistance in series with a D.C. blocking capacitor (Fig. 4a, not shown) or an inductor in series with a D.C. blocking capacitor (Fig. 4b, not shown): these networks determine the A.G.C. loop gain for A.C. and control the elimination of "flutter". The resistor 97 may be omitted, the capacitor shunting diode 93 being connected to the join of two resistors in series in the emitter circuit of transistor 93 (Fig. 6, not shown).
Patent GB-1227867-A (GB)
IPC: C23C18/54
Filed: 1968-04-26
Abstract: 1,227,867. 867. Metal plating of semi-conductors. SPETSIALNOE KONSTRUKTORSKOE BJURO POLUPROVODNIKOVYKH PRIBOROV. April 26, 1968, No.19846/68. Heading C7F. [Also in Division H1] A semi-conductor body is plated with a metal by immersing said body (in a solution containing ions of said metal) in contact with a solid catalyst having a surface comprising zinc or a metal from Group VIII of the Periodic Table, at least until the start of the deposition reaction. The catalyst may be a Ni plate, or a rod or powder of Zn, Fe, Ru, or Os, or a synthetic material coated with a catalytic layer. The semi-conductor may be Bi-Te-Se or Bi-Te-Sb, and the plating metal may be Ni or Co. Nickel may be deposited from a bath containing 21 g/1 of NiCl 2  , 24 g/l of NaH 2  PO 2 , 30 g/l of NH 4  Cl, 45 g/l of sodium citrate, and sufficient ammonia solution to give apH of 8 to 9. The catalyst may be removed from the solution at any time after the commencement of the deposition reaction, and the semi-conductor body may be heated at, say, 150‹ C. after plating.
Patent GB-1229600-A (GB)
IPC: B23B47/28
Filed: 1968-12-06
Abstract: 1,229,600. Knitting. LIGHTNING FASTENERS Ltd. 27 Nov., 1969 [6 Dec., 1968], No. 58060/68. Heading D1K. [Also in Division E2] A sliding clasp fastener stringer tape is warp knitted to its finished width. The interengageable elements attached to it may be of the separate metallic type, coil type, meander type, or plastics moulded onto a stringer tape. The edge portion to which the elements are attached may be of greater or lesser thickness than the rest of the tape. The tape may be made of polyester, nylon or other thermoplastic or cotton thread. Composite yarns may be used e.g. they may have a core of higher melting point The tapes may be knitted side by side, may be coated with thermoplastic material and may be formed with aligned longitudinal apertures.
Patent GB-1238076-A (GB)
IPC: A47J37/12
Filed: 1969-02-14
Abstract: 1,238,076. Container. IMPERIAL CHEMICAL INDUSTRIES Ltd. 29 Jan., 1970 [14 Feb., 1969], No. 8176/69. Heading A4A. A container 1 for hot fat and cooking oil 7 is formed from a 4 methyl pentine 1 polymer. It has a lid 2 formed with a sieve 3 for collecting pieces of food from hot fat after use, and flanges 4 to provide a close fit with the vessel and 5 to provide a shallow trough above the sieve for the temporary retention of fat during pouring. A further lid 6 seals the whole vessel.
Patent GB-1238821-A (GB)
IPC: B04B1/20
Filed: 1970-03-16
Abstract: 1,238,821. Centrifugal separator. COMBUSTION, ENG. Inc. 16 March, 1970 [17 March, 1969], No. 12574/70. Heading B2P. A centrifuge for separating a slurry into its solid and liquid constituents comprises a rotary bowl 15, a coaxial rotary conveyor 22 for moving the separated solids along the bowl towards a discharge opening 19, and a slurry feed pipe 13 having an outlet 14 within the tubular body 24 of the conveyor, the body 24 having circumferentially spaced openings 27, in the region thereof which rotates about the feed pipe outlet 14 in operation, for the passage of slurry through the body of the bowl interior, each of the openings 27 having a straight trailing (with respect to the direction of rotation of the body) edge extending parallel to the conveyor axis. As shown, the openings 27 are rectangular. An orifice member in the form of a rectangular apertured plate 28 made of alumina is fastened, with the interposition of a rubber sealing gasket 33, to the inside of the tubular body 24 at the location of each of the openings 27 to form a dam whereby, in operation, a pool of slurry is formed at the leading (with respect to the direction of rotation of the tubular body) side of the dam or the inside surface of the tubular body and rotates therewith. The slurry when fed meets the rotating pool rather than the inside surface of the tubular body thereby avoiding excessive erosion of the latter. The rotating pool also serves to accelerate the slurry towards the speed of rotation of the tubular body before discharge of the slurry through the openings. Each orifice member 28 preferably overhangs its associated opening at the trailing edge thereof so that essentially all wear occurs on the member itself instead of on the conveyor body 24. (For Figures see next page)
Patent GB-1239652-A (GB)
IPC: H01M50/271
Filed: 1969-02-14
Abstract: 1,239,652. Regulating pressure in diving chambers. MARINE EXPLORATION Ltd. 14 Feb., 1969, No. 8112/69. Heading B7U. [Also in Division H1] A submersible housing comprises an inner container including a base member, an outer cover open at its base for containing the inner container and means for introducing gas under pressure into the outer cover and including a valve for controlling the rate of flow of gas in response to changes in the local hydrostatic pressure. In a particular embodiment the housing contains electric battery 1 which is housed in container 2 under cover 6. The container is of waterproof material and is lined with thermal insulation 4. A heating element is shown at 3. The cover is lined with packing material 8. Gas is supplied from bottle 12 via valve 10 and any excess gas escapes through tubes 15 via non-return valves 18. The housing may rest on support 16 being held down by hinged rods 17 incorporating screw adjusters 14.
Patent GB-1251114-A (GB)
IPC: H02M3/156
Filed: 1969-09-18
Abstract: 1,251,114. Automatic voltage control. COLLINS RADIO CO. Sept. 18, 1969 [Dec. 16, 1968], No. 46096/69. Heading G3R. A D. C. source 10 is connected across load resistor 20 through inductor 11 and diode 18, the inductor being energized through transistor 12 for a given interval. When the transistor is cut off the inductor discharges through capacitor 19 and resistor 20, the capacitor being charged to a voltage higher than the source voltage. A differential amplifier 21 compares the output voltage EO with a reference voltage ER, the error signal being applied to driver 22 which is connected to the base of transistor 12. As the current through the inductor and transistor increases the transistor becomes saturated at a point determined by the base current so that its collector potential begins to rise. A one-shot device 16 then responds to generate a pulse of predetermined duration to cut off the transistor 12. In another arrangement an iron-cored transformer couples the source and load, a diode being connected in series between the transformer secondary winding and the parallel combination of a capacitor and load resistor. An isolator is connected between the differential amplifier and the driver, Fig. 2 (not shown). In a further embodiment, a transistor, inductor, and resistive-capacitive load circuit are connected in series with the source. The current in the inductor builds up when the transistor is conductive. A diode across the inductor and load circuit provides a path for the inductor current when the transistor is cut off. This arrangement provides step-down operation of the D. C. voltage level, Fig. 5 (not shown). Alternatively, the source, transistor, and diode, are connected in series with the load, an inductor being in parallel with the source and transistor so that current builds up in the inductor when the transistor is conductive. The inductor is in parallel with the series arrangement of the diode and load. When the transistor is cut off, the diode provides a low impedance path for the inductor current, thus charging the capacitor in a polarity opposed to that of the source Fig. 6 (not shown).
Patent GB-1251690-A (GB)
IPC: A46B13/00
Filed: 1968-12-24
Abstract: 1,251,690. Sweeping machines. INDUSTRIAL BRUSH CO. 24 Dec., 1968, No. 61473/68. Heading E1G. [Also in Division A4] In a street-sweeping machine, comprising outwardly flaring side brushes 32 and rubbersoled guide shoes 36, defining a path P to be swept by a brush 20 which deposits dirt particles on a wall 30 for transference by cleats 28 of an endless conveyor belt to a hopper, parts A of the path are swept by inclined brush filaments which, on release from contact with the surface to be swept flick dirt particles forwardly and toward the centre of the brush. The brush consists of a cylindrical, rotated core 41 adjustable in height relatively to the path P by a chain 23 and having end faces 40 with stub axles 46 each received in a slot 47 in a support 21 pivoted at 22 on a chassis 19, and a helical brush strip 49 having folded brush filaments 53 retained by a strip 54 in a channelsection base 50 secured to the core, the filaments being directed by side walls 52 which are progressively inclined, from a direction normal to the surface of the core at the central portion, towards the end of the core nearer thereto, so that end filaments project beyond the end faces 40 and end parts thereof are flexed rearwardly and outwardly to sweep the parts A. The brush filaments are of natural or synthetic fibres and may include a mixture of hard and soft fibres. The end filaments may contact the inner surface of the guide 36 to provide a concentration of filaments in the parts A and, in modifications, the filaments are additionally, at an angle to the radius of the core to provide a rake in the direction of movement, and/or in the opposite direction, of the core.