baber/WOPTO huggingface dataset:
Patent TW-202225935-A (TW)
Inventor: LEE HAE-WON
IPC: G09G3/30
Filed: 2021-12-27
Abstract: 本發明關於一種觸控顯示裝置，其包含包含沿水平方向彼此分隔的多個第一電極部以及連接第一電極部的多個第一橋接部的第一水平電極；包含沿垂直方向分隔於第一水平電極且沿水平方向彼此分隔的第二電極部以及連接第二電極部的多個第二橋接部之第二水平電極；包含沿垂直方向分隔於第二水平電極且沿水平方向彼此分隔的第三電極部以及連接第三電極部的多個第三橋接部之第三水平電極；連接於第一水平電極且沿垂直方向延伸的第一水平觸控線路；電性連接於第二水平電極且沿垂直方向延伸的第二水平觸控線路；以及電性連接於第三水平電極且沿垂直方向延伸的第三水平觸控線路；多個第一分隔電極；多個第二分隔電極；第一垂直觸控線路；以及第二垂直觸控線路。
Patent TW-202327813-A (TW)
Title: Non-sintered or low-temperature-sintered grinding wheel and preparation method thereof
Inventor: Chen zu-han
IPC: B24D18/00
Filed: 2022-01-14
Abstract: The present invention provides a non-sintered or low-temperature-sintered grinding wheel and a preparation method thereof. The preparation method comprises: step (a): mixing a mullite powder, a calcined kaolin, an abrasive and a liquid binder to obtain a slurry; wherein, the liquid binder comprises an alkaline solution or a colloidal silica solution; and step (b): sequentially subjecting the slurry to a prepressing step and a shaping step to obtain the non-sintered or low-temperature-sintered grinding wheel; the shaping step comprises standing at room temperature or sintering at 350 DEG C to 700 DEG C. Accordingly, the preparation method has effects of low energy consumption and low cost.
Patent TW-202219502-A (TW)
Inventor: RHODES GEORGE WYATT
IPC: G01N29/036
Filed: 2018-02-27
Abstract: The embodiments disclosed herein relate to the examination of gemstones including diamonds, both cut/polished and rough, using the technology of Resonant Ultrasound Spectroscopy. The resonant frequencies are obtained by mechanically causing the stone to vibrate using a swept sine oscillator, sensing the resonance vibrations, and displaying the spectrum to yield a pattern describing the stone. The resonance fingerprints can be used to both track an individual stone to verify its integrity or to grade a rough stone to establish potential value.
Patent TW-202303216-A (TW)
Title: Optical imaging system
Inventor: LEE JI-SU
IPC: G02B9/64
Filed: 2022-03-14
Abstract: An optical imaging system is provided. The optical imaging system includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens disposed in order from an object side to an imaging side. The first lens has positive refractive power, and the second lens has negative refractive power, and TTL/(2 x IMG HT) ＜ 0.6 and -0.1 ＜ SAG42/TTL ＜ 0 are satisfied, where TTL is a distance from an object-side surface of the first lens to an imaging plane on an optical axis, IMG HT is equal to half a diagonal length of the imaging plane, and SAG42 is a SAG value at an end of an effective aperture of an image-side surface of the fourth lens.
Patent TW-202239943-A (TW)
Title: Liquid crystal composition and uses thereof and liquid crystal display element wherein the liquid crystal composition fully meets at least one of the properties of high upper limit temperature, low lower limit temperature, low viscosity, large optical anisotropy, large dielectric anisotropy, high specific resistance, high stability to light, high stability to heat, large elasticity constant, and the like
Inventor: IZENA SHOGO
IPC: C09K19/12
Filed: 2022-03-30
Abstract: The invention provides a liquid crystal composition and an active matrix element comprising the composition. The liquid crystal composition fully meets at least one of the properties of high upper limit temperature, low lower limit temperature, low viscosity, large optical anisotropy, large dielectric anisotropy, high specific resistance, high stability to light, high stability to heat, large elasticity constant, and the like, or relates to at least two of the properties with an appropriate balance. A liquid crystal composition which comprises: a specific compound, used as component A, having large optical anisotropy and dielectric anisotropy; a specific compound, used as component B, having large dielectric anisotropy; and a specific compound, used as component C, having small viscosity or high upper limit temperature, the liquid crystal composition can also comprise a specific compound, used as component D, having large dielectric anisotropy or a specific compound, used as component E, having large dielectric anisotropy in the minor axis direction.
Patent TW-202302667-A (TW)
Title: Chemically amplified resist composition, photomask blank, method for forming resist pattern, and method for producing polymer compound
Inventor: MASUNAGA KEIICHI
IPC: G03F7/039
Filed: 2022-05-10
Abstract: A chemically amplified resist composition contains (A) a polymer compound containing one or two or more kinds of repeating units, at least one kind of the repeating units is polymerized from a polymerizable monomer with not more than 1000 ppm of a residual oligomer in a form of dimer to hexamer. An object of the present invention is to provide: a chemically amplified resist composition capable of achieving favorable resolution, pattern profile, and line edge roughness, and simultaneously suppressing development­residue defect, which would otherwise cause mask defect; and a method for forming a resist pattern by using this composition.
Patent TW-202306130-A (TW)
Title: Semiconductor memory device
Inventor: LEE KYUNG-HWAN
IPC: H01L27/10
Filed: 2022-05-24
Abstract: A semiconductor memory device is provided. The semiconductor memory device includes a substrate; a transistor disposed above the substrate, the transistor having a channel region defining an inner space; and a capacitor passing through the transistor in a vertical direction in the inner space.
Patent TW-202313633-A (TW)
Inventor: GONZALEZ-LOPEZ MARCOS
IPC: C07D513/04
Filed: 2022-05-25
Abstract: 本發明實施例提供式I化合物、該等化合物之醫藥組成物、及治療疾病諸如癌症之方法。
Patent TW-202301190-A (TW)
Title: Apparatus and method for grading printed card
Inventor: JEONG YONG-SUK
IPC: G06K9/64
Filed: 2022-06-17
Abstract: A device for grading a printed card according to an embodiment disclosed herein comprises a communication circuit, memory, and a processor electrically connected with the communication circuit and the memory. The processor may: acquire a scanned image of a card to be evaluated; use the communication circuit to acquire a sample image corresponding to the card to be evaluated and provided by a manufacturer of the card to be evaluated; calculate a centering score associated with the position of a characteristic part of the card to be evaluated by comparing the scanned image and the sample image; calculate a fault score associated with flaws included on the surface or edges of the card to be evaluated by analyzing the scanned image; and provide a grading result for the card to be evaluated on the basis of the centering score and the fault score.
Patent TW-202242817-A (TW)
Inventor: YAMAZAKI SHUNPEI
IPC: G09F9/00
Filed: 2014-11-28
Abstract: 本發明的一個方式的目的之一是提供一種顯示品質良好且良率高的撓性顯示裝置。在第一基板上形成第一有機樹脂層，在第一有機樹脂層上形成第一絕緣膜，在第一絕緣膜上形成第一元件層，在第二基板上形成第二有機樹脂層，在第二有機樹脂層上形成第二絕緣膜，在第二絕緣膜上形成第二元件層，以第一元件層及第二元件層被密封的方式貼合第一基板與第二基板，進行使第一有機樹脂層與第一基板的緊密性降低而分離第一基板的第一分離製程，藉由第一黏合層黏合第一有機樹脂層與第一撓性基板，進行使第二有機樹脂層與第二基板的緊密性降低而分離第二基板的第二分離製程，並且，藉由第二黏合層黏合第二有機樹脂層與第二撓性基板。
Patent TW-202313659-A (TW)
Inventor: CHEN CHENG-YAO
IPC: C07K14/195
Filed: 2022-06-30
Abstract: 本發明所請係一種B族DNA聚合酶變體，其可提升核苷酸類似物的摻入效果，以利於多核苷酸的合成以及相關核酸模板的定序。更具體而言，利用該B族DNA聚合酶變體搭配一通常之核酸模板以及可逆染料終止子核苷酸下，得以有效進行DNA合成式定序法(sequencing-by-synthesis method)，以準確地測定該核酸模板之序列。
Patent TW-202244021-A (TW)
Inventor: BEALL GEORGE HALSEY
IPC: C03C3/097
Filed: 2017-01-06
Abstract: 一組Li
         2 O-Al
         2 O
         3 -SiO
         2 -B
         2 O
         3 族系的玻璃組成，可在含有NaNO
         3 與KNO
         3 的至少一者的單一或多個離子交換浴中化學強化，計短時間（2-4小時），以形成深層深度（DOL）。在一些情況下，DOL為至少70微米；在其他情況下為至少約100微米。離子交換玻璃具有高耐損性（壓痕斷裂韌度為大於10公斤力至大於50公斤力），此優於或至少可比鈉鋁矽酸鹽玻璃。
Patent TW-202247662-A (TW)
Title: Encoding device, decoding device, encoding method and decoding method
Inventor: ABE KIYOFUMI
IPC: H04N19/537
Filed: 2018-05-15
Abstract: The present invention relates to a decoding device, encoding device, decoding method and encoding method which can decrease the amount of processing. In prediction block units, into which an image included in a moving image is divided, this encoding device derives a first motion vector by means of a first interframe prediction method which uses the degree of matching of two reconstructed images of two regions in two mutually different pictures, and, thereafter, performs first motion compensation processing, in prediction block units, for generating a prediction image by referring to the spatial gradient of brightness in an image generated by the first motion compensation that uses the derived first motion vector.
Patent TW-202315143-A (TW)
Inventor: KUO Fu-Chiang
IPC: H01L29/92
Filed: 2022-08-10
Abstract: 在基板中形成深溝槽。在基板上方形成包括與至少兩個節點介電層交錯的至少三個金屬電極層的層堆疊。層堆疊連續地延伸至深溝槽中，且在深溝槽的未填充容積中存在空腔。包括介電填充材料的介電填充材料層形成在空腔中及基板上方。介電填充材料層包封不含任何固相且在空腔的容積內形成的空隙。在隨後處置包括層堆疊的深溝槽電容器期間，空隙可以在應力下膨脹或收縮，以吸收機械應力且增加深溝槽電容器的機械穩定性。
Patent TW-202319229-A (TW)
Title: Copper clad laminate film and electronic device including the same
Inventor: PARK JONG-YONG
IPC: B32B15/00
Filed: 2022-10-17
Abstract: Disclosed are a copper-clad laminate film and an electronic device including the same. The copper-clad laminate film includes: a polyimide-based substrate having a fluorine layer disposed on at least one side thereof; a tie-layer disposed on the polyimide-based substrate having the fluorine layer placed thereon; and a copper layer disposed on the tie layer, wherein the tie-layer includes at least one metal element selected from among metal elements of Group 4, Group 6, Group 13, and Group 14 in the Periodic Table, and the at least one metal element may have a metal-oxygen (M-O) bond dissociation energy of 400 kJ/mol or more.
Patent TW-202332326-A (TW)
Title: Plasma chamber with multiphase rotating independent gas cross-flow with reduced volume and dual vhf
Inventor: COLLINS KENNETH S
IPC: H05H1/42
Filed: 2022-10-18
Abstract: Embodiments disclosed herein include a plasma treatment chamber, comprising one or more sidewalls. A support surface within the one or more sidewalls holds a workpiece. A first gas injector along the one or more sidewalls injects a first gas flow in a first direction generally parallel to and across a surface of the workpiece. A first pump port along the one or more sidewalls generally opposite of the first gas injector pumps out the first gas flow. A second gas injector along the one or more sidewalls injects a second gas flow in a second direction generally parallel to and across the surface of the workpiece. A second pump port along the one or more sidewalls generally opposite of the second gas injector pumps out the second gas flow. The first and second gas flows comprise a process gas mixture and/or an independent gas injection (IGI) mixture.
Patent TW-202331162-A (TW)
Title: Cooling system, semiconductor manufacturing system, etching method, and device manufacturing method
Inventor: TAKAYAMA MICHIO
IPC: F24F5/00
Filed: 2022-10-28
Abstract: A cooling system S1 according to one embodiment comprises: a refrigeration cycle device 10 that circulates a natural refrigerant; a first cooling liquid circulation device 20 that circulates a first cooling liquid cooled by the natural refrigerant; and a second cooling liquid circulation device 30 that circulates a second cooling liquid via an object to be temperature-controlled. The refrigeration cycle device 10 and the first cooling liquid circulation device 20 are connected by a first heat exchanger 40. The first cooling liquid circulation device 20 and the second cooling liquid circulation device 30 are connected by a second heat exchanger 50. The second cooling liquid circulation device 30 has a supply valve device 301 that receives the low temperature-side second cooling liquid cooled by the first cooling liquid at the second heat exchanger 50, and the high temperature-side second cooling liquid that does not pass through the second heat exchanger 50.
Patent TW-202334505-A (TW)
Title: Stripper composition for removing color resist and insulating layer
Inventor: KIM WAN-KYU
IPC: C23F1/16
Filed: 2022-12-30
Abstract: The present invention relates to a stripper composition for removing a color resist and an insulating film, and more particularly, to a stripper composition comprising: a solvent, including a first aprotic polar solvent containing nitrogen atoms (N) and a second aprotic polar solvent having a molecular weight different from that of the first aprotic polar solvent; an ethylene glycol ether compound; an inorganic base or a salt compound thereof; a chain amine compound; and an alkyl ammonium compound. Under the premise of not damaging the inorganic insulating film used as an underlying film and various metal wiring, not only the color resist can be quickly removed, but also the negative and positive organic insulating films can be removed.
Patent TW-202329214-A (TW)
Inventor: CHEN WEN-JU
IPC: H01L21/20
Filed: 2023-01-03
Abstract: A method for forming a semiconductor device includes forming a first gate stack over a first semiconductor region, depositing a spacer layer on the first gate stack, and depositing a dummy spacer layer on the spacer layer. The dummy spacer layer includes a metal-containing material. An anisotropic etching process is performed on the dummy spacer layer and the spacer layer to form a gate spacer and a dummy sidewall spacer, respectively. The first semiconductor region is etched to form a recess extending into the first semiconductor region. The first semiconductor region is etched using the first gate stack, the gate spacer, and the dummy sidewall spacer as an etching mask. The method further includes epitaxially growing a source/drain region in the recess, and removing the dummy sidewall spacer after the source/drain region is grown.
Patent TW-202335508-A (TW)
Title: Signaling volumetric visual video-based coding content in immersive scene descriptions
Inventor: HAMZA AHMED
IPC: H04N19/597
Filed: 2023-01-16
Abstract: The present system and method are directed to volumetric video representation in a scene description. The described systems and methods present a generic design to support V3C/V-PCC content. The systems and methods include the semantics as well as binary representation for decoded V3C/V-PCC media data in the form of buffers which may be used by the presentation engine for reconstruction and rendering.
Patent TW-202337052-A (TW)
Title: Crystal wafer and method for manufacturing crystal oscillator capable of preventing concave-and-convex for the crystal wafer and reducing cracks during handling and transportation
Inventor: HATANO MAKOTO
IPC: H03H9/15
Filed: 2023-02-02
Abstract: The present invention provides a crystal wafer and a method for manufacturing a crystal oscillator. The crystal wafer can reduce cracks during handling and transportation and can improve productivity. The crystal wafer (10) includes a twinned region (21) in part or all of the peripheral portion (20). The twinned region is a region of at least 2 mm from the outer circumference of the crystal wafer to the center, and more than 80% of the region is twinned. The crystal wafer including the twinned region is formed with an etching-resistant mask (13) formed in a matrix for forming the outlines of a plurality of crystal oscillators, and the crystal wafer is immersed in an etching liquid mainly composed of hydrofluoric acid to form the outlines.
Patent UA-37901-A (UA)
Filed: 2000-04-28
Abstract: The invention relates to medicine, gastroenterology, neurology and may be used for determination of abdominal vegetative neuroganglion injury in patients with the disease of abdominal organs. The pressation through a front abdominal wall on the deeply located tissues in the places of abdominal vegetative neuroganglion projection and in the highreflexogenic areas of neurometamers, which innervate the abdominal organs, is carried out dosed.
Patent UA-50920-A (UA)
Inventor: KRYZHANIVSKYI YEVSTAKHII IVANOVYCH
Filed: 2001-05-04
Abstract: 畓灰牯⵴散瑮牥湩⁧湵瑩爠汥瑡獥琠⁯敭湡⁳潦⁲散瑮牥湩⁧桴⁥牡慲杮浥湥⁴景琠敨戠瑯潴⁭景琠敨搠楲汬瀠灩⁥䄨䑂⥐‮畓灰牯⵴散瑮牥湩⁧甠楮⁴慨⁳⁡慢汬戠摯⁹湡⁤湡椠獮慴汬摥椠⁮⁡畭晦戠⁹敭湡⁳景琠牨慥敤⁤潪湩⁧瑳灯数Ⱳ愠⁴桴瑡漠⁮桴⁥畭晦愠摮琠敨猠潴灰牥戠污⁬潣瑮捡⁴畳晲捡獥愠敲瀠潲楶敤Ɽ眠瑩⁨潰獳扩汩瑩⁹景椠瑮牥捡楴湯眠瑩⁨敲灳捥楴敶猠牵慦散漠⁦桴⁥潢祤‬湡⁤湩琠敨戠污⁬慰瑲漠⁦桴⁥潢祤氠湯⁧汳瑯⁳牡⁥慭敤‬湩琠潨敳映硩摥椠⁮桴⁥畭晦挠汹湩牤捩污椠獮牥楴湯⁳牡⁥湩瑳污敬Ɽ戠獥摩獥琠慨ⱴ愠⁴桴⁥数楲桰牥污瀠牡獴漠⁦桴⁥潢祤‬湩爠扥牯湩獧‬楣捲汵牡猠湩獵楯慤⁬灳楲杮⁳牡⁥汰捡摥‬湩挠湯慴瑣眠瑩⁨湩敮⁲畳晲捡獥漠⁦桴⁥畭晦愠摮琠敨猠潴灰牥‮浉汰浥湥慴楴湯漠⁦桴獩椠癮湥楴湯猠慨汬洠歡⁥瑩瀠獯楳汢⁥潴椠灭潲敶瀠獯楳楢楬楴獥漠⁦散瑮牥湩⁧䉁偄愠摮椠据敲獡⁥畱污瑩⁹景映牯慭楴湯漠⁦桴⁥敷汬猠整⹭਍
Patent UA-49194-A (UA)
Title: Method for fixing teeth of toothed wheels
Inventor: ONYSCHUK SERHII HRYHOROVYCH
Filed: 2001-06-12
Abstract: Method for fixing teeth of toothed wheels is performed by means of plastic deformation of the surface of the teeth by processing bodies, placed in the depressions of the teeth in a free way. At that, the toothed wheel being processed and deforming element being coupled with it, this one is arranged as a pinion with decreased teeth height to the division circle diameter, are brought into rotation with same angular velocities, though in opposite directions. Current passes through the contact point of the wheel being processed and deforming pinion. Body of the apparatus is insulated by a textolite layer.
Patent UA-50089-A (UA)
Title: Drawing tool
Inventor: NIKOLAIEV VIKTOR OLEKSANDROVYCH
Filed: 2001-07-26
Abstract: Drawing tool has a case, nut, conic clamping with longitudinal section (collet) sleeve in which are located pressure and working dies and also sealing washer. The tool is made with split sealing washer, and the length of conic part of clamping (collet) sleeve is equal to the length of working die.
Patent UA-47785-A (UA)
Title: Method for obtaining biologically active additive from ginseng
Filed: 2001-09-14
Abstract: The method for obtaining the biologically active additive from the ginseng comprises the processing of the raw material disrupting not less than 95 mass % of the cells.
Patent UA-54012-A (UA)
Title: Asynchronous monophase drive-pump (versions)
Filed: 2002-04-18
Abstract: Asynchronous monophase drive-pump has housing with encapsulated winding of the stator and magnetic conductor; stator and rotor are cylindrical, burdened of separate sheets of electro-technical steel; inside the stator rotor is placed, on its shaft centrifugal pump is installed. Rotor and stator are placed in parallel positions with respect o each other and separated with a gasket, this is made as a disk of stainless steel Magnetic conductor and short-circuit winding of the rotor are made of copper rods pressed to plastic housinf with simultaneous casting of the working wheel of the pump. At that, the rotor rotates in one or two bearing supports. Winding of the rotor that rotates at one bearing support is made of aluminum rods. Rotor and stator are made of aluminum and attached to each other by the bearing support.
Patent UA-60070-A (UA)
Title: Method for selecting samples for constructing diagnostic models of products
Inventor: BOHUSLAIEV VIACHESLAV OLEKSANDROVYCH
Filed: 2003-01-21
Abstract: The proposed method for selecting samples for constructing diagnostic models of products consists in dividing the original sample data set into an instruction data set and analysis data set. Within the indication area of the original data set, the intervals of the compact arrangement of the samples are defined. Among the samples belonging to each of the said intervals, the sample is classified as the sample belonging to the instruction data set if the said sample is in the node of the structure corresponding to the sample classification. The other samples are classified as the samples with the data belonging to the analysis data set.
Patent DO-P2022000272-A (DO)
Title: Anticuerpos anti-tigit
Inventor: KELSEY SIVICK GAUTHIER
IPC: C07K16/28
Filed: 2022-12-01
Abstract: Anticuerpos que se unen específicamente al receptor TIGIT. Los anticuerpos tienen la capacidad de activar de manera sustancial las células T y las células asesinas naturales mediante la inhibición de la unión de TIGIT a CD155. Los anticuerpos se pueden usar para el tratamiento del cáncer y enfermedades infecciosas, entre otras aplicaciones.
Patent GB-189700558-A (GB)
Title: Improvements in and connected with Tee Squares.
Inventor: KENDRICK WILLIAM
Filed: 1897-01-08
Granted: 1897-02-27
Abstract: 558. Kendrick, W. Jan. 8. Squares.-The object is to prevent the blade of a T-square from slipping down when ruling parallel lines. For this purpose, the end of the blade is made to extend beyond the drawing-board and is slotted for the reception of two flanged runners b, b<1> which are pressed apart by the spiral spring i. On the runners are screws k, k<1> with tightening-nuts l, l<1>, the former of which passes through a slot in a spring trigger m, n with projection o. The runners are pushed near to the edge of the board and the nut l<1> tightened. The trigger is then raised and the runner b is pressed by the spring against the edge of the board to hold the blade firmly in position.
Patent GB-189706736-A (GB)
Title: An Improved Small Wheel Lathe.
Inventor: BOCQUET HARRY CLAUDE
Filed: 1897-03-15
Granted: 1898-02-26
Abstract: 6736. Bocquet, H. C. March 15. Lathes.-Relates to small wheel lathes for turning railway and tramway wheels and the outside journals of the axles. The axle and wheels are supported between two headstocks b, b<1> in a hollow shaft e mounted in standards c, c'. The cups d, d<1> of the bearings in the standards are hinged so that they can be swung aside, and the shaft e is constructed in two parts, hinged together to permit the insertion and removal of the axle. The axle and hollow shaft are connected together and are rotated from the driving-shaft j by worm gearing j<1>, g. The wheel g is built up of two parts, the lower half being keyed to the lower part of the shaft e, and the upper half of the wheel connected to its lower half by wedges and cottars. The tools are carried by two compound rests, not shown, on the bed a.
Patent GB-189710514-A (GB)
Title: Improvements in Mandolines, Guitars, Lutes, Mandores, and the like Stringed Instruments.
Inventor: INDELICATO SALVATORE
Filed: 1897-04-27
Granted: 1897-06-12
Abstract: 10,514. Indelicato, S. April 27. Guitars; mandolins.-The strings pass from the tail-piece b, through tubes a on a block fixed to the inside of the belly. Sound holes are cut in the body just underneath the tail-piece.
Patent GB-189711816-A (GB)
Title: Improvements in or applicable to Pneumatic Seats or Cushions.
Inventor: RALEIGH CHARLES
Filed: 1897-05-12
Granted: 1898-03-19
Abstract: 11,816. Raleigh, C. May 12. Air beds, cushions, and the like.-The cushion, pillow, bed, &c. is made of airtight material, and provided with a valve c opening inwards, and with internal springs a, Fig. 1, a<2>, Fig. 2, or simple C springs, or rubber balls or bulbs. Or the airtight cover b may be provided with a protecting- cover d and with a woven-wire covering-surface e, either internal or external. The action is as follows :-On sitting on the cushion the air is compressed to some extent, and if leakage occurs on vacating the seat the springs distend the cushion to its original volume, air entering by the valve to supply that lost by leakage.
Patent GB-189714311-A (GB)
Title: Handle Bar for velocipedes.
Inventor: LICHTENBERG AUGUST
Filed: 1897-06-12
Granted: 1897-11-20
Abstract: 14,311. Lichtenberg, A., and M³ller, E. June 12. Handle-bars are made adjustable in height and width by making the various tubes to telescope one into the other. The cross-bar B consists of a central portion a into which slide the tubes b carrying the handles. The tubes are kept in position by a spring catch, consisting of a spring g fixed at one end and having at the other end a projecting stud or pin f which engages with one of the ho'es e formed in the tube a. To prevent relative turning of the tubes, the tube a carries a feather i which engages with a groove k in the tube b. A similar arrangement is used with the upright tube to adjust the height of the handle-bar.