baber/WOPTO huggingface dataset:
Patent WO-2020051879-A1 (WO)
Title: Mammary machine probe box and mammary machine
Inventor: CHEN JUN
IPC: A61B8/00
Filed: 2018-09-14
Abstract: A mammary machine probe box and a mammary machine. The mammary machine probe box comprises a box body (100); the interior of the box body (100) comprises a probe component (200) and a cable (300); the probe component (200) may perform reciprocal motion in the box body (100); the interior of the box body (100) is provided with a cable moving chamber (110); the cable moving chamber (110) is located at one side of the probe component (200); the cable (300) is provided in the cable moving chamber (110); a first end (310) of the cable (300) is connected to the probe component (200), and a second end (320) of the cable (300) is connected to the box body (100) at one side of the cable moving chamber (110) adjacent to the probe component (200). The mammary machine probe box of the present application has good overall reliability, small occupancy space, and long service life of the cable.
Patent WO-2019057178-A1 (WO)
Title: Air filtering device for nasal breathing
Inventor: LAM CASEY HAY TUNG
IPC: A62B23/06
Filed: 2018-09-21
Abstract: An air filtering device for nasal breathing. The device comprises: a first filter (1) and a second filter (2) that are suitable for wearing inside a user nasal cavity; and a connector (3) connecting the first filter (1) and the second filter (2). Each of the first filter (1) and the second filter (2) comprises a supporting member (11) and a filtering member (8). The supporting member (11) and the filtering member (8) are integrally formed by insert molding and constitute a non-detachable whole. The supporting member (11) comprises a supporting part (5) that is used to support the filtering member (8) and a fitting part (4) that is integrally extended from the supporting part (5) and that fits the user nasal cavity. The supporting member (11) and the filtering member (8) are integrally formed, simplifying the part assembly process, reducing costs, and avoiding contamination of the air filtering device for nasal breathing in the assembly process, thereby providing a clean, hygienic air filtering device for nasal breathing.
Patent WO-2020006893-A1 (WO)
Title: Receipt acquisition method, apparatus, computer device, and storage medium
Inventor: LIU JIAN
IPC: G06Q20/04
Filed: 2018-09-26
Abstract: Disclosed in the present application are a receipt acquisition method, an apparatus, a computer device, and a storage medium: an enterprise end front-end machine may carry out a corporate-to-bank connectivity function with a plurality of banks of different types, and the enterprise end front-end machine is provided thereon with a plurality of UKey interfaces, thus guaranteeing the normal use of each bank account; a receipt query task is initiated without needing to manually log into different bank accounts for receipt querying but rather by automatically completed by means of a financial system, thus improving the efficiency of receipt acquisition for accounts at different major categories of banks.
Patent WO-2020077647-A1 (WO)
Inventor: SONG ZHENMING
IPC: F04D29/44
Filed: 2018-10-20
Abstract: 一种具有摆风结构的风扇，包括壳体，该壳体上部设有中央通孔(73)，围绕中央通孔(73)设置有环形出风口(1)，环形出风口(1)与风扇的风道连通，在环形出风口(1)内，设置有借助驱动机构(6)驱动的两个摆风环(4，5)，一个摆风环（4）在左右方向摆动，另一个摆风环（5）在上下方向摆动。具有该摆风结构的风扇采用简单的结构实现了两个自由度的摆风，提高了用户体验。
Patent WO-2019080922-A1 (WO)
Title: Molecular sieve having mesopores, preparation method therefor, and application thereof
Inventor: BI YUNFEI
IPC: C01B39/04
Filed: 2018-10-26
Abstract: A molecular sieve having mesopores, a preparation method therefor, and an application thereof. The molecular sieve has a silica/alumina molar ratio of 100-300. The molecular sieve contains a mesoporous structure, and a closed hysteresis loop appears at P / P0 = 0.4-0.99 of a low temperature nitrogen adsorption-desorption curve thereof, the closed hysteresis loop starting at P/P0=0.4-0.7. When used as a catalyst for solid acid formation, the molecular sieve has good isomeric pour point depressing capabilities, and achieves high yields of a target product having a low pour point in a product. A method for preparing a catalyst is further provided. Adopting the method for preparing a catalyst enables preparation of a catalyst having a high active ingredient dispersion, thereby prolonging the life of the catalyst, while also improving catalytic activity of the catalyst.
Patent WO-2019184409-A1 (WO)
Inventor: RUAN WEIWEN
IPC: G09G3/00
Filed: 2018-11-27
Abstract: An organic light emitting display test device and a test circuit (100) for an organic light emitting display panel. The test device comprises a test circuit (100) and a display panel (200); the display panel (200) comprises a plurality of pixel units (210), and each column of the pixel units (210) comprises a plurality of first pixel unit groups and a plurality of second pixel unit groups; the test circuit (100) comprises at least one source signal line (VD1, VD2), and the at least one source signal line (VD1, VD2) is respectively connected to each first pixel unit group and each second pixel unit group. By dividing a plurality of columns of pixel units (210) of the display panel (200) into the plurality of first pixel unit groups and the plurality of second pixel unit groups, and respectively inputting a first signal and a second signal to each first pixel unit group and each second pixel unit group at different timings, each pixel unit (210) on the display panel (200) displays a checkerboard image, image sticking test of the display panel (200) is implemented, without mounting components such as a drives chip, a flexible circuit board, and a polarizer on the display panel (200), thereby avoiding a waste of the components.
Patent WO-2020107259-A1 (WO)
Title: Dual-polarized micro-strip patch antenna, package antenna, and terminal device
Inventor: ZHOU WEIXI
IPC: H01Q9/04
Filed: 2018-11-28
Abstract: Embodiments of the present invention relate to the technical field of antennas. Specifically disclosed are a dual-polarized micro-strip patch antenna, a package antenna, and a terminal device. The dual-polarized micro-strip patch antenna comprises a radiation patch, a reference ground, a first probe, and a second probe, wherein the radiation patch is provided with a first slot and a second slot, the first slot and the second slot intersect vertically, the first slot is symmetrical about the second slot, and the second slot is symmetrical about the first slot; an intersection point of the first slot and the second slot is located on the geometric center of the radiation patch; the radiation patch is provided at one side of the reference ground; the first probe and the second probe are respectively connected to the radiation patch, the first slot and the second slot that are vertically orthogonal divide the radiation patch into four right-angle regions, and a first feeding point and a second feeding point are located in two right-angle regions adjacent to each other. The antenna in the technical solution has high polarization isolation, and can be applied to application scenarios that require higher polarization isolation.
Patent WO-2020093489-A1 (WO)
Inventor: Lv Fulai
IPC: E06B9/68
Filed: 2018-11-29
Abstract: 一种窗帘装置（100），包括滑轨结构（10）、导轮结构（20）、驱动结构（30）、固定结构（40）、转动结构（50）和窗帘结构（60），其中滑轨结构（10）包括一对滑轨（11），导轮结构（20）包括一对导轮（22），其中滑轨（11）分别固定于窗框（200）的第一侧（210）和第二侧（220），每一个导轮（22）安装于对应的滑轨（11）的底部并固定于窗框（200），固定结构（40）固定于窗框（200）的第三侧（230），驱动结构（30）安装于固定结构（40）并包括至少一个电机（32），电机（32）包括电机轴（321），窗帘结构（60）包括窗帘（61）和窗帘安装轴（62），窗帘（61）的上端固定于窗帘安装轴（62），电机轴（321）和转动结构（50）固定连接，电机轴（321）驱使转动结构（50）相对固定结构（40）转动，从而实现窗帘（61）的收拢或者展开。该窗帘装置（100），利用电机（32）可以自动控制窗帘（61）的收拢或者展开，不需使用者手动操作，同时可以遥控操作，提供了使用的方便性。
Patent WO-2019196479-A1 (WO)
Title: High pressure drop control method for unit, apparatus, and air-conditioning device
Inventor: SU YUHAI
IPC: F25B49/00
Filed: 2018-12-14
Abstract: Disclosed are a high pressure drop control method for a unit, an apparatus, and an air-conditioning device. The method comprises: monitoring an operating mode of the unit; obtaining, according to the operating mode, corresponding operating parameters; and adjusting the opening degree of an electronic expansion valve (EEV) according to the operating parameters. According to the present application, by detecting the corresponding operating parameters in different operating modes of the unit, and adjusting the opening degree of the EEV of indoor and outdoor units according to the operating parameters, an intermediate pressure of refrigerant circulation is changed, and it is ensured that a system has sufficient power to promote refrigerant circulation. The adverse effect of high drop of the indoor and outdoor units on refrigerant circulation is reduced, the performance of the unit is improved, and the flexibility of engineering installation is improved.
Patent WO-2019214234-A1 (WO)
Inventor: CHEN XIAOSHUAI
IPC: G06F3/023
Filed: 2018-12-14
Abstract: 一种输入预测方法和装置，所述方法包括：获取第一输入内容以及第二输入内容（S101）；确定所述第一输入内容对应的场景类别（S102）；根据所述第一输入内容、所述场景类别以及所述第二输入内容，预测得到与所述第一输入内容的偏序关系符合预设条件的第三输入内容；其中，所述偏序关系用于描述各输入内容出现的先后顺序（S103）。可以提高输入预测的准确性，有效提高输入效率。
Patent WO-2019157858-A1 (WO)
Title: Electronic device and control method for camera module
Inventor: ZHANG XIANG
IPC: H04M1/02
Filed: 2018-12-18
Abstract: Provided are an electronic device and a control method for a camera module. The electronic device comprises a housing, a camera module, a rotation mechanism and a pushing mechanism, wherein the camera module is arranged inside the housing, and the rotation mechanism is used to drive the camera module to rotate inside the housing; and when the camera module rotates to a pre-set position, the pushing mechanism is used to push the camera module out of the housing. In the embodiment of this application, the electronic device saves production costs and frees up the installation space needed for a front camera.
Patent WO-2019129065-A1 (WO)
Title: 冰箱
Inventor: CHEN JIANQUAN
IPC: F24F13/24
Filed: 2018-12-26
Abstract: 一种冰箱，包括压缩机（10）、与压缩机（10）连接的冷凝器（20）及连接压缩机（10）与冷凝器（20）的第一流体输送管，其中，第一流体输送管包括一过渡管段（111），过渡管段（111）中设置一沿过渡管段（111）延伸方向延伸的内管（112），内管（112）外壁与过渡管段（111）的内壁间隔空间设置，且过渡管段（111）的进端与压缩机（10）的出端连通，过渡管段（111）的出端与冷凝器（20）的进端连通，以使得进入过渡管段（111）中的流体的一部分在过渡管段（111）与内管（112）之间的区域流动，一部分在内管（112）中流动，从而改变流体的流动速度，以达到降低流动噪声、改善冰箱整体声品质的目的。
Patent WO-2019137235-A1 (WO)
Title: Heat-not-burn device based on electromagnetic induction thermal field
Inventor: TAN HUIMIN
IPC: A24F40/465
Filed: 2018-12-28
Abstract: A heat-not-burn device based on an electromagnetic induction thermal field. The device comprises: a housing (1); an induction coil (2) and a thermal insulation layer (3) sequentially installed within the housing (1) from an outer side toward an inner side, wherein the induction coil (2) surrounds the thermal insulation layer (3), an inductive heat generating member (4) is provided within the thermal insulation layer (3) and is exposed from the thermal insulation layer (3), and the thermal insulation layer (3) is provided with a temperature sensor immediately adjacent to the inductive heat generating member (4); and a cover member (5) provided at an upper portion of the housing (1), an air outlet channel (55) being provided in the cover member (5) and being in communication with the thermal insulation layer (3). The invention achieves uniform heating of an object to be processed. The device provides fast heating, has a simple structure, and is safe and reliable to use.
Patent WO-2020133320-A1 (WO)
Title: 扬声器
Inventor: WANG YANLONG
IPC: H04R9/06
Filed: 2018-12-29
Abstract: 一种扬声器，包括上壳体、与所述上壳体组配围成收容空间的下壳体及收容于所述收容空间内的扬声器单体，所述扬声器单体包括振膜，所述上壳体包括顶壁、自所述顶壁朝所述壳体方向延伸的侧壁、以及自所述顶壁朝远离所述顶壁方向延伸并与所述侧壁间隔设置的挡墙，所述挡墙、侧壁及顶壁围成收容所述扬声器单体的收容部，所述顶壁的一端设置有透气隔离件，所述下壳体与所述透气隔离件之间间隔形成收容吸音材料的第一吸音腔，所述挡墙远离所述扬声器单体的一侧与所述侧壁及所述下壳体围成收容所述吸音材料的第二吸音腔，所述第一吸音腔及所述第二吸音腔连通，本发明扬声器增大了扬声器的灌粉空间，提升了扬声器的声学效果。
Patent WO-2020133522-A1 (WO)
Inventor: LIU SHIJIE
IPC: H01Q1/50
Filed: 2018-12-29
Abstract: 本发明提供了一种传输线模组、天线模组以及移动终端。传输线模组，应用于天线模组，天线模组包括射频前端和辐射体，传输线模组包括本体以及集成于本体的用于传输信号的传输线和与传输线连接的电路，本体包括第一端部和第二端部；第一端部用于电性连接射频前端，第二端部用于电性连接辐射体电路设置于第二端部并通过传输线与第一端部和第二端部电性连接。本发明的传输线模组、天线模组以及移动终端，无需将天线模组设置在移动终端的主板上，节省了主板空间。
Patent WO-2020034587-A1 (WO)
Title: Minimization of driving tests in dual connectivity networks
Inventor: FANG JIANMIN
IPC: H04W24/02
Filed: 2019-01-21
Abstract: In one aspect a wireless communications method is disclosed. The method includes receiving, at the first base station, an activation message to allow the first base station to receive the network performance information from a user equipment. The method further includes selecting the user equipment from a plurality of user equipment based on allowed network performance information. The method further includes sending, from the first base station to the user equipment, a configuration message including a configuration for the network performance information that includes the allowed network performance information.
Patent WO-2019149254-A1 (WO)
Inventor: TANG TIAN
IPC: A61P35/00
Filed: 2019-01-31
Abstract: 本发明提供了一种小分子免疫化合物的晶型、其制备方法和含有其的药物组合物，该化合物为(3Z,6Z)-3-[((E)-3-(5-叔丁基)-1H-咪唑基-4-基)亚甲基]-6-((E)-3-(3-氟苯基)-2-丙烯亚基)哌嗪-2,5-二酮，所述的其晶型具有稳定的形态，化学稳定性好，耐高温，用于治疗过度增殖疾病，该化合物的结构式如式(I)所示。
Patent WO-2019158001-A1 (WO)
Title: Blockchain generating method, and related device and system
Inventor: LIU XUN
IPC: G06F21/64
Filed: 2019-02-02
Abstract: Disclosed is a blockchain generating method, comprising: a client sends first transaction information to a first node device, the first transaction information comprising first basic information and first digest information; the client receives a first endorsement result sent by the first node device, the first endorsement result comprising a signature generated after the first node device successively simulates a transaction; if the first endorsement result meets a preset transaction condition, the client sends to a second node device the first digest information and the first endorsement result, so that the second node device sends, according to the first endorsement result, to the first node device the first digest information for generating a complete blockchain. The present application further provides a client and node devices. Only digest information is transmitted between the first node device and the second node device of the present application, the digest information being a part of the content of transaction information. Therefore, the second node device would not obtain complete transaction information, thereby facilitating improving the security of information.
Patent WO-2019214313-A1 (WO)
Inventor: GUO ZHIYOU
IPC: G06Q40/08
Filed: 2019-02-19
Abstract: 一种车辆定损的交互处理方法、装置、处理设备及客户端。所述方法包括用户打开终端定损应用，启动结合AR的拍摄视窗对车辆进行取景，根据实际的车辆位置、角度等信息对用户进行拍摄引导和反馈，用户可以无需其他拍照录像等复杂操作，按照拍摄引导信息进行拍摄即可完成损伤识别，进而快速实现定损、理赔。利用所述方法，用户可以无需专业的定损图像拍摄技能和复杂的拍摄操作步骤，定损处理成本更低，结合AR的引导拍摄可以进一步提高用户定损服务的服务体验。
Patent WO-2020062763-A1 (WO)
Inventor: LI XUANZHONG
IPC: G09F9/33
Filed: 2019-02-21
Abstract: An LED display module (100) and an LED display screen. The LED display module (100) comprises a display module (10) and a box support (20), the display module (10) being fixedly connected to the box support (20), characterized in that the display module (10) comprises a lamp board (110) and LED lamp beads (120), the LED lamp beads (120) are provided on the lamp board (110), the edge of the lamp board (110) is provided with a plurality of notches (110a), and when two LED display modules (100) are tiled, the notches (110a) of the lamp boards (110) of the two LED display modules (100) are arranged opposite each other, and define a sound transmission hole. The LED display screen is formed by tiling the LED display modules (100). In the present invention, a plurality of notches (110a) are provided on the lamp board (110), when the LED display modules (100) are tiled to form an LED display screen, the notches (110a) of the lamp boards (110) of two LED display modules (100) are arranged opposite each other and define a sound transmission hole; the sound on the back surface of the LED display modules (100) is able to be guided to the front surface through the sound transmission hole, thereby realizing sound transmission of the display screen and solving the sound effect problem in cinemas.
Patent WO-2019165964-A1 (WO)
Inventor: GAO XIANGQIAN
IPC: C07F15/00
Filed: 2019-02-27
Abstract: A cyclobutane dicarboxylic acid platinum complex shown in formula (I) and an intermediary, a preparation method, a pharmaceutical composition, and a use thereof. The cyclobutane dicarboxylic acid platinum complex has good anti-tumour activity. The complex provided in the present invention has a water solubility several dozen times higher than existing platinum anti-tumour drugs; the feature of high water solubility can increase and improve the excretion of drugs in the kidneys and alleviate the high renal toxicity side effects normally present for platinum drugs; the compounds are easily formulated and more convenient for clinical application.
Patent WO-2020103359-A1 (WO)
Inventor: XIN WENBIN
IPC: C12Q1/6869
Filed: 2019-03-15
Abstract: A rapid identification method for fungi in the human body on the basis of Sanger sequencing, comprising a DNA extraction and quality testing step, a primer design and synthesis step, a PCR amplification step, a PCR product purification step, a PCR product purification step, a sequencing step, and a data processing step. The gene sequences of particular species are amplified by using specific primers and are sequenced and aligned for respective identification thereof.
Patent WO-2020191551-A1 (WO)
Title: Method for sharing electronic content or comments with specific user
Inventor: SUN JIAN
IPC: G06Q50/30
Filed: 2019-03-22
Abstract: Provided is a method for sharing the electronic content or comments with a specific user, wherein the method is applied to a corresponding client and server. The method applied to a client comprises: receiving, at a client of a first user, a sharing operation instruction, regarding the electronic content or comments, of the first user; forming sharing initiation data; transmitting same to a server; receiving, at a client of a specific user, sharing receiving data related to a sharing operation and transmitted by the server; and displaying sharing information in a prominent manner. The method applied to a server comprises: receiving sharing initiation data sent by a client of a first user; forming sharing receiving data; and sending the sharing receiving data to a client of a specific user. According to the method of the present disclosure, sharing with a specific user is more direct and efficient.
Patent WO-2020191805-A1 (WO)
Inventor: MENG XIANGBAO
IPC: E21F5/00
Filed: 2019-04-04
Abstract: The present application belongs to the technical field of explosion suppression of coal-bed gas, and discloses a compound explosion suppressor for suppressing explosion of a low-concentration coalbed gas and a preparation method thereof. The preparation method of the compound explosion suppressor comprises: first, separately grinding disodium hydrogen phosphate dodecahydrate, dipotassium hydrogen phosphate trihydrate, magnesium bicarbonate, ammonium bicarbonate and calcium silicate into powders; then separately passing a talcum powder and the ground powders through a 200-mesh screen and collecting the screened powders for later use; separately weighing the screened powders at a certain ratio, adding the same into a dry powder blender and thoroughly mixing same until homogeneous to obtain a mixed powder; and finally, drying the mixed powder by heating from room temperature to 40°C at a heating rate of 15°C/h and performing constant-temperature drying to obtain the compound explosion suppressor. The various powder materials of the compound explosion suppressor have a synergistic suppressive effect, such that coal-bed gas explosions cannot continue to occur, thus achieving the purpose of suppressing an explosion of a low-concentration coal-bed gas. The compound explosion suppressor of the present invention performs well in suppressing explosions.
Patent WO-2019196904-A1 (WO)
Inventor: YANG GUANGFU
IPC: C07D403/06
Filed: 2019-04-11
Abstract: 本发明涉及农药除草剂领域，公开了一种喹唑啉二酮类化合物及其应用和一种农药除草剂，本发明的喹唑啉二酮类化合物具有式(I)所示的结构，R为H或者为式(I-1)所示的基团。本发明提供的喹唑啉二酮类化合物具有优异的除草活性和优异的作物安全性。
Patent WO-2020199259-A1 (WO)
Inventor: LEE CHING MOU
IPC: A47G21/18
Filed: 2019-04-19
Abstract: A reinforced paper straw, comprising bottom paper (1), middle paper (2), and outer paper (3) which are pasted to form a whole and rotated to form a cylindrical shape. Both sides of the middle paper (2) and the outer surface of the outer paper (3) are coated with an adhesive. The adhesive is glue mixed with calcium carbonate powder or talc powder. According to the reinforced paper straw, calcium carbonate powder or talc powder is added to glue, and the paper straw processed with thinner paper can also achieve the strength of use, reducing the thickness and amount of roll paper used to make the paper straw. In addition, the reinforced paper straw is degradable.
Patent WO-2019210786-A1 (WO)
Inventor: FAN JIANGLI
IPC: A61P35/00
Filed: 2019-04-22
Abstract: 噁嗪类化合物及其应用。所述的噁嗪类化合物，具有通式F的结构。本发明中所述及的噁嗪类化合物是一类具有近红外吸收发射的同时具备光敏及声敏特性的光/声动力活性有机分子。该类化合物最大吸收和发射波长均大于660nm，三线态转化率高，在光照或超声条件下，可较高效率产生活性氧物种，对于癌细胞和癌组织具有较好的杀伤作用，在对肿瘤达到光/声动力治疗的同时几乎不对正常组织产生毒副作用。
Patent WO-2020186604-A1 (WO)
Inventor: ZHENG LIHUA
IPC: G09G3/36
Filed: 2019-05-07
Abstract: 提供一种显示面板的驱动方法，通过在第一画面帧中使得第一复用信号、第二复用信号、第三复用信号、第四复用信号、第五复用信号及第六复用信号依照第一顺序依次产生高电平脉冲（S2），并在第二画面帧中使得第一复用信号、第二复用信号、第三复用信号、第四复用信号、第五复用信号及第六复用信号依照不同于第一顺序的第二顺序依次产生高电平脉冲（S3），从而通过第一画面帧和第二画面帧的效果叠加，消除显示面板显示的画面的条纹感，提升显示品质。
Patent WO-2019223570-A1 (WO)
Title: Clothing treatment device and control method thereof
Inventor: ZHAO ZHIQIANG
IPC: D06F58/20
Filed: 2019-05-14
Abstract: A clothing treatment device and a control method thereof. The clothing treatment device comprises: a treatment cylinder assembly, wherein clothing to be treated is placed in the treatment cylinder assembly; and an atomization module (200), comprising an atomization water storage device (201) and an atomization device, wherein the atomization water storage device (201) has an atomization water storage cavity (2011) for storing water to be atomized and an atomized-water output end (2016) communicating with the treatment cylinder assembly. The atomization device is provided outside the atomization water storage cavity (2011). An energy output end of the atomization device acts on the water to be atomized in the atomization water storage cavity (2011) to convert the same into water vapor, and the water vapor enters the treatment cylinder assembly via the atomized-water output end (2016) to perform atomization treatment on the clothing. In the invention, the atomization module generates water vapor, and the water vapor is introduced into the treatment cylinder assembly to perform atomization treatment on clothing, such that the atomization-treated clothing has no wrinkles or odor.
Patent WO-2020191883-A1 (WO)
Inventor: HUA JIAN
IPC: A24F47/00
Filed: 2019-05-14
Abstract: An energy-concentrating atomizer, comprising a housing, a conical inner cavity provided in the housing and extending upward beyond an upper portion of the housing, a connection member sleeved on an upper end of the conical inner cavity, an upper cover body connected onto the connection member, a piezoceramic provided on the bottom of the conical inner cavity, a fixed base provided below the piezoceramic and used for accommodating the piezoceramic and the conical inner cavity, and a bottom cover sleeved on the fixed base, used for accommodating the fixed base, and connected to the housing. The bottom cover is provided with a first electrode and a second electrode respectively connected to the piezoceramic. The use of a non-heating operation mode solves the overheating problem of a machine body, makes it easier to atomize the liquid, and improves the energy conversion efficiency. At the same time, parts such as a piezoceramic are ensured to be more easily recycled, and the effect of being convenient for daily maintenance is available.