295results about How to "Reduce deformation" patented technology

An improved holder and method for implanting a tissue-type prosthetic mitral heart valve that prevents suture looping and may also constrict the commissure posts of the valve. An upstanding or shaft member axially positioned on the holder causes the lengths of attachment sutures to extend axially beyond the commissure post tips to create a tent and prevent looping of any of an array of pre-implanted sutures around the tips during deployment of the valve. The shaft member may be axially movable such that it can be initially retracted and then actuated just prior to valve deployment. The shaft member may have notches on its distal tip for capturing the attachment sutures, which are crossed over along the valve axis to ensure engagement by the notches. The attachment sutures may be strands or filaments, or may be wider bands of flexible biocompatible material. If bands are used, they desirably cover the commissure post tips to further help prevent suture looping thereover. The flexible lengths of material extend directly between commissures of the valve, or may extending radially inward from each commissure to a central upstanding member.

Featured is a medical instrument driver, a robotic apparatus embodying such a medical instrument driver and methods related thereto for inserting a medical instrument into tissue of a mammal (e.g., human). Such medical instruments include medical needles, biopsy needles, trocars, cutters and introducers. Such a medical instrument driver according to the present invention is configured and arranged so that medical instrument is rotated as it is being moved longitudinally for insertion into the tissue such that the medical instrument is spiraling as it pierces and traverses the tissue to the target area.

An alkaline cell having a flat casing, preferably of cuboid shape. The cell can have an anode comprising zinc and a cathode comprising nickel oxyhydroxide. The casing can have a relatively small overall thickness, typically between about 5 and 10 mm, but may be larger. Cell contents can be supplied through an open end in the casing and an end cap assembly inserted therein to seal the cell. The end cap assembly includes a vent mechanism, preferably a grooved vent, which can activate, when gas pressure within the cell reaches a threshold level typically between about 250 and 800 psig (1724×10³ and 5515×10³ pascal gage). The cell can have a supplemental vent mechanism such as a laser welded region on the surface of the casing which may activate at higher pressure levels.

A knee joint prosthesis includes a femoral component having an anterior side, a posterior side, a pair of laterally spaced condylar portions, and an intercondylar portion joining the condylar portions and including a recess. A cam surface is located adjacent the intercondylar recess on the anterior side of the femoral component and has a saddle shape that is defined by an at least substantially concave first radius of curvature and a convex third radius of curvature that is perpendicular to the concave first radius of curvature. The prosthesis also includes a tibial component including a platform having an upper surface that includes first and second laterally spaced concavities. Each concavity is adapted for receiving one condylar portion of the femoral component. The tibial component has a tibial post for reception in the intercondylar recess of the femoral component. The tibial post has a saddle shaped anterior cam surface that is complementary to the saddle shaped anterior cam surface of the femoral component and is defined by an at least substantially convex second radius of curvature and a concave fourth radius of curvature that is perpendicular to the convex second radius of curvature.

A rotatable tool for friction stir welding a workpiece and an associated apparatus and method are provided. The tool includes a first pin portion that extends from a shoulder and defines a contour surface opposite the shoulder. A second pin portion extends from the contour surface of the first pin portion. The contour surface, which mixes the material of the workpiece during welding, can increase the mixing of the material at the interface, thereby increasing the strength of the joint.

A system and method of assembling a ball grid array (BGA) package with IC die support is described. A stiffener is attached to a substrate that includes a centrally located opening with an integrated circuit (IC) die support structure removably held therein. An IC die is mounted to a central region of the stiffener. Further assembly process steps may be performed on the BGA package with IC die support. The IC die support structure is removed from the centrally located opening. In aspects of the invention, the IC die support structure is removably held in the opening by an adhesive tape or by one or more substrate tabs.

The invention provides a flexible displaying device. The device comprises a flexible displaying panel, an optical glue layer, a flexible cover plate and a crush-resistance layer; the optical glue layer is arranged at the side, close to the flexible cover plate, of the flexible displaying panel; the crush-resistance layer is arranged between the optical glue layer and the flexible cover plate to reduce deformation of the optical glue layer due to pressure. By arranging the crush-resistance layer between the optical glue layer and the flexible cover plate in the flexible displaying device, the deformation of the optical glue layer due to pressure can be reduced, and then the surface hardness of the flexible displaying device is increased.

The invention discloses a welding method of a tungsten target material component. The welding method comprises the following steps: providing a tungsten target material and a copper back plate; turning threads in the welding surface of the tungsten target material; forming a groove in the copper back plate; mounting the tungsten target material in the groove; welding the tungsten target material and the copper back plate by a hot isostatic pressure method. Through the use of the welding method, the threads are turned in the welding surface of the tungsten target material, the groove is formed in the copper back plate, and the tungsten target material and the copper back plate are mounted together, so that the tungsten target material is positioned in the groove; then welding by the hot isostatic pressure method is performed, in the welding process, the deformation quantity of the tungsten target material is small, and a fragmentation phenomenon not easily occurs; in addition, because of the threads, the area of the welding surface of the tungsten target material is enlarged, and the welding strength of the tungsten target material component is improved; after welding, the threads are embedded in the copper back plate from the welding surface of the tungsten target material, so that the welding strength of the tungsten target material component is further improved.

A negative electrode for a lithium secondary battery according to the present invention includes a current collector 12, and an active material layer 14 formed on the current collector 12. The active material layer 14 includes a plurality of negative-electrode active material members 16 disposed on the current collector 12. Each negative-electrode active material member 16 is oxide, including a first region 18 of a relatively high oxygen concentration and a plurality of second regions 20 having an oxygen concentration which is lower than that of the first region 18. The first region 18 extends from a bottom face of each negative-electrode active material member 16 in a direction away from the surface of the current collector. The plurality of second regions 20 are alternately disposed on both sides of the first region 18.

The present invention discloses a test method and a test device, and the test method comprises setting a series of voltage values which are a first voltage value, a second voltage value, ..., a (N-1)th voltage value, an Nth voltage value from small to big, providing test voltages to a liquid crystal display panel, wherein, the test voltages are the Nth voltage value, the first voltage value, the (N-1)th voltage value, the second voltage value, ...; measuring a transmittance rate of the liquid crystal display panel under the test voltage value respectively. Under the function of the test voltage, liquid crystal molecules are alternately symmetric and deflected for/backward, deformation of the liquid crystal molecules can be recovered in a short time, data test error can be reduced, accuracyof a VT curve can be improved, and data with higher precision can be provided for Gamma tuning.

The invention provides an electric vehicle which can cool a power unit by cold airstreams without causing dew drops and a temperature rise in a vehicle interior.

The electric vehicle travels by operating a motor, and includes a duct having one end joined to the air conditioning unit and the other end joined to the power unit and serving as an airstream flow path via which cold airstreams are guided from an air conditioning unit to the power unit. The duct is shaped in accordance with a shape of a vehicle interior near a front passenger's seat, and being positioned under a floor at the front passenger's seat.

The present invention provides a kit for delivering catheter brachytherapy to a subject comprising a medical balloon catheter (1) having a proximal (2) and distal (3) end, comprising a elongated catheter tube (5) with an inflation lumen (21) extending therewithin and at least one inflatable balloon (4, 4′) towards the distal end (3) in fluid communication with the catheter tube (5) inflation lumen (21), the catheter tube (5) configured to unfold from a kinked condition permitting the inflation lumen (21) to slidably receive a removable inner tube (6), the inflation lumen (21) configured to carry inflation fluid to the least one inflatable balloon (4, 4′) in the presence of the removable inner tube (6); and a removable inner tube (6) having an elongated body, an open (9) proximal end (7), a closed (10) distal end (8), and a source wire lumen (22) extending therewithin, wherein the removable inner tube (6) is configured for insertion into and removal from at least part of the length of the inflation lumen (21), and the source wire lumen (22) configured to receive a source wire (19) bearing a therapeutic radiation source (20). It also provides a method for delivering catheter brachytherapy to a subject.

A semiconductor device includes a link portion that connects a second heat sink to a third heat sink via a solder. The solder is arranged on a connecting surface of a base portion of the link portion, which is orthogonal to a plate thickness direction of the base portion, in a direction perpendicular to first and second surfaces. The link portion has a rib that protrudes from the base portion in a direction orthogonal to the first and second surfaces, and a thickness of a portion where the rib is provided is equal to or less than the thickness of the corresponding heat sink. The rib is provided across an entire length of a first region that is sealed by a sealing resin body and that is between the second and the third heat sinks, in an alignment direction of a first heat sink and the third heat sink.

The invention provides a metal powder material additive manufacturing method under ultrahigh pressure inert gas shielding. A pressurized cabin is designed outside material additive manufacturing forming equipment and communicated with the material additive manufacturing forming equipment, before parts are printed by high-energy laser beams/electron beam layer by layer according to a scanning path, inert gases such as Ar and He are injected into the pressurized cabin, and the high pressure in the pressurized cabin and the material additive manufacturing forming equipment is kept all the time. By means of the material additive manufacturing method under ultrahigh pressure inert atmosphere, high-property metal parts are directly manufactured, and the method is particularly suitable for material additive manufacturing of active easily-oxidized metal such as high temperature alloy and titanium alloy. The method has the following remarkable advantages that (1) the inner qualities of the metal parts are improved; (2) deformation and cracking phenomena during printing are reduced; (3) the compactness of the metal printed parts is improved to a certain degree; (4) invasion of harmful gases is effectively prevented during printing.

The present invention relates to a semiconductor non-pin-packaging structure and its packaging process. The said structure includes chip substrate (1), wire-bonded pins substrate (2), chip (3), metal wire (4) and plastic package (5). Bottoms of the said chip substrate (1) and wire-bonded pins substrate (2) protrude bottom of the plastic package (5). The chip substrate is consisted of two parts, of which one is set in the plastic package, and the other is set outside the plastic package. The part in plastic package is consisted of several independent metal protrusions (1.1) which extend to outside of the plastic package, and all connect onto a complete metal sheet (1.2). The outer metal sheet (1.2) shows a pallet pattern to support the several independent metal protrusions (1.1) in the plastic package, and protrudes from the bottom of the plastic package (5), thus it consists another part of the chip substrate; the said chip is set on the metal protrusions of chip substrate. The present invention will not lead to layered and unattaching of the chip substrate, can be applied in high power, high heat-distributed productions.

The invention provides a backlight source. The backlight source comprises a back board, a reflecting sheet arranged in the back board, a light guide board arranged above the reflecting sheet, and a plurality of optical membranes arranged above the light guide board. At least one through hole penetrating through the reflecting sheet, the light guide board and the optical membranes at the same time is formed in edge areas of the reflecting sheet, the light guide board and the optical membranes. The back board is provided with positioning columns penetrating through the through holes. Each positioning column comprises a positioning column body and an elastic material layer arranged on the side face of the positioning column body. Correspondingly, the invention further provides a display device. According to the backlight source and the display device, the possibility of deformation of the light guide board, the optical membranes and the reflecting sheet can be reduced in the high-temperature and high-humidity test.

The invention discloses a dual-trimming door pocket edge banding machine which comprises a machine body, wherein two first supporting platforms that are arranged left and right are connected to the upper surface of the machine body, a conveying belt group is arranged on each first supporting platform, the upper parts of the two first supporting platforms are provided with a supporting frame, the supporting frame is internally provided with two first brackets arranged left and right, a pressure wheel set is connected to each first bracket, and the two pressure wheel sets respectively correspond to one conveying belt group; the part of the machine body, which is positioned at the rear part of the supporting frame, is sequentially provided with a pre-milling device, a gluing and facing device and a belt-cutting device from left to right; the two conveying belt groups are connected through a coupling device, a fixing plate is connected to the upper surface of the coupling device, and a plurality of pulleys arranged left and right are arranged on the fixing plate; and the part of the machine body, positioned between the belt-cutting device and one end of the fixing plate, is provided with a first trimming device, the rear part of the machine body is provided with a second supporting platform for supporting a second trimming device and a slotting device. The invention has the advantages of improving working efficiency and reducing labor intensity.

The invention discloses alkali-free glass for a flat-panel display and a founding process thereof. The glass comprises the following components in percentage by mass: 54-68 percent of SiO2, 10.8-17.1 percent of Al2O3, 7.6-12.5 percent of B2O3, 0.2-1.8 percent of MgO, 4.2-15 percent of CaO, 0.6-7.1 percent of SrO, 0.1-5 percent of BaO, 0.2-1 percent of ZnO, 0.1-1.54 percent of ZrO2 and 0.1-1.3 percent of SnO+SnO2. The alumina borosilicate glass does not contain arsenic and stibium with larger environment pollution, reduces the content of gas impurities in the glass by a specific process and improves the glass quality.

The invention provides a multi-frequency polarized antenna. The multi-frequency polarized antenna comprises a reflection plate, and the reflecting plate disposed at least one low frequency radiating element and the low frequency radiating unit adjacent to the at least one high frequency radiating element, the high-frequency radiation unit has a spacer periphery, with at least one suspension strip above the isolation box. The invention multi-frequency dual-polarized antenna with the new boundary structure, improve the consistency of the high-frequency pulse width, deformation reduced, cross-polarization improvement in high frequency high frequency cross polarization pattern has clearly improved.

The invention belongs to a design method and particularly relates to an enclosed loading framework for a multidimensional bearing test on a large-scale structural member. The enclosed loading framework comprises a rigid foundation and further comprises four columns an upper cross beam, wherein the rigid foundation and the upper cross beam are respectively connected with the columns through screws to form a generally hollow cube shape, and the upper cross beam is provided with a z-direction oil cylinder. The enclosed loading framework is advantaged in that the enclosed loading framework is an internal force self-balancing system capable of improving measurement precision, multidimensional cooperation loading is further realized, and the enclosed loading framework is further equipped with multiple hydraulic oil cylinder driving systems to realize x, y and z multidimensional pulling, pressing and twisting simulation loading of a large-scale sample. For a small sample, only a pulling, pressing or twisting single condition test can be realized through a traditional design method. The enclosed loading framework can realize the cooperation loading test on a large-scale structural member under the pulling, pressing and twisting composite bearing condition.

The invention discloses a four-point bending beam-based bituminous mixture interlaminar shear strength testing device. A first support and a third support are arranged at the bottom of a loaded I-shaped beam, the first support is hinged to a first bending beam clamp, and the third support is hinged to a third bending beam clamp; a second support and a fourth support are arranged at the top of a base, the second support is hinged to a second bending beam clamp, and the fourth support is hinged to a fourth bending beam clamp. By regulating the positions of the bending beam clamps and the supports, the four-point bending beam-based bituminous mixture interlaminar shear strength testing device can guarantee that the vertical load applied onto a test piece corresponds to the designed length of a moment arm, and due to the interaction of vertical load and hinging, the interlaminar of a test piece only bears shearing load without the influence from bending moment stress, thus facilitating reasonable explanation and analysis on the interlaminar cementation situation of bituminous pavements in a pure shearing state, and simultaneously lightening the influence of rigidity of the bending beam clamp on testing results.

A PCB for mounting IC package is designed with dummy solder pads. Dummy solder pastes will spread on the dummy solder pads after screen printing process of solder paste. A substrate for a package of IC is designed with or without dummy solder pads. After mounting the package of IC onto the PCB, the dummy solder paste may or may not solder to the substrate of the package of IC. When the package of IC suffers external force, the dummy solder pastes can help provide supporting for the package of IC and increase the mechanical strength to avoid package or IC crack.

The invention discloses a three-dimensional visible physical watermark copyright anti-counterfeit marking method for a 3D printed model. The method comprises firstly calculating the saliency value ofthe model and extracting a non-saliency region as an editing region of a visible watermark; then performing planar parameterization on the 3D model to obtain a 3D-to-2D mapping relationship and calculating the normal map of the model; selecting watermark image information to be edited and locating the watermark image information to be edited in the non-saliency region of the normal map; solving anew normal vector according to the embedding strength of the watermark, and performing a surface reconstruction algorithm based on a kernel function to map a 2D watermark image to the surface of the 3D model; and finally adding a visible physical watermark to the surface of the 3D printed model. The method can automatically select a low-detail region for surface editing, effectively avoids the modification of the visible watermark to important features of the model, provides a reconstructed curved surface with low deformation degree by using the surface reconstruction algorithm based on the kernel function, and can fuse with the grids of a non-editing region.

A micro actuator and a method of manufacturing the micro actuator. A micro actuator includes a base frame, a first movable part, a second movable part, at least one pair of permanent magnets, a coil part, and a deformation suppression portion. The first movable part is rotatably connected to the base frame. The second movable part is rotatably connected to the first movable part and includes a mirror which changes an optical path. The coil part includes a plurality of coil sections protruded from top surfaces of the first and second movable parts. The deformation suppression portion includes a plurality of grooves formed in the first and second movable parts between the coil sections. The deformation suppression portion suppresses a thermal deformation, which occurs when a current is applied to the coil part, so as to reduce deformations of the first and second movable parts.

A pull band for an inflatable air mattress particularly of medium and large sizes to provide for the mattress excellent elongation and self-balanced mechanism is divided into an upper and a lower portions to respectively jointed to the upper and the lower perimeters of the mattress in symmetric, corresponding and inverse fashion to form an enclosure for providing pull strength to regulate the form of and to support the mattress; the band yielding support for the mattress saturated with the air to effectively cope with external pressure for maintaining in shape; and the mattress being automatically restored to its shape once the external pressure is released.

The invention relates to a method for reducing the deformation quantity of workpieces after laser cladding. The method comprises the steps that light outlets of two semiconductor lasers are placed downwards in parallel, two lasers are emitted in the same vertical plane in the same direction in parallel and are focused respectively, the focusing position of a second light spot is changed through the reflection action of a reflector set behind a focusing lens of a second light path, the two lasers act on the same work surface, a first light spot is used for cladding of the surface layer of material, the second light spot is used for secondary fusion of the surface layer of the material subjected to the cladding treatment, and therefore uneven portions on the surface of the material can be repaired. In the machining and repairing process, the size of the first light spot is smaller than the size of the second light spot. According to the method, the mode that only one light spot of a traditional laser cladding light source can be used for machining is changed, the two lasers are used for machining, the surface evenness of a cladding layer of the machined material is remarkably optimized, the machining quality and efficiency of laser cladding are greatly improved, and the subsequent machining is reduced.

An acoustic sensing element has a substrate that includes a back chamber, a vibration electrode plate that is provided in a surface of the substrate while being opposite an upper surface opening of the back chamber, and a fixed electrode plate that is provided opposite the vibration electrode plate, an acoustic hole being made in the fixed electrode plate. The acoustic sensing element outputs an electric signal based on an electrostatic capacitance change generated between the vibration electrode plate and the fixed electrode plate by a displacement of the vibration electrode plate. A lower surface of the back chamber is closed into a pouched shape by the substrate.

The invention discloses a printing plate structure and a manufacturing method thereof. According to the structure, embossed type protruding dots composed of different proportions of screen dots are distributed on the printing plate. The protruding dots are of a big-end-down frustum shape. The tops of the protruding dots are provided printing plate screen dots forming printing screen dots on a printed material. The printing plate screen dots extend upwards to form post heads. The section shape of the whole bodies of the post heads is the same as the shape of the printing plate screen dots. In addition, the embossing heights of the protruding dots where all printing plate screen dots below the standard tone are located are sequentially reduced according to the linear relation. The printing plate structure is used for printing and has the beneficial effects of improving printing resistance rate, preventing the expansion value of the printing screen dots from being enlarged, preventing small printing screen dots from being expanded irregularly and the like. The printing quality is improved, and more artistic patterns can be obtained.

The invention relates to a deformation control method in a rigid heat-insulating tile coating forming process, belongs to the technical field of a porous ceramic heat-insulating material, and can be used for preparing a heat shielding material of an aircraft such as a space shuttle and the like. The method comprises: applying coating slurry to the surface of a rigid heat-insulating tile ceramic base body which is initially processed to a certain thickness and shape; after drying, putting the coated base body material at a high temperature to be sintered for thermal treatment; after sintering for thermal treatment, taking out the base body material from the high-temperature environment and cooling the base body material to room temperature; and finally carrying out secondary processing to reduce the base body material to the finally required thickness. Compared to a conventional method which directly processes the base body material to the finally required thickness and then carries out coating forming, deformation of the rigid heat-insulating tile in the coating forming process can be effectively controlled.

The invention discloses a connecting structure for nested composite sections. The connecting structure comprises an upright post and a cross beam which are respectively crossly nested by elongated members to form a thin-wall cylinder, and is characterized in that: the upright post and the cross beam are vertically connected through a connecting joint; the connecting joint comprises a bottom plate and a lug boss, wherein a hole cavity is formed on the lug boss along the direction vertical to the bottom plate; the lug boss and the cross beam are in inserted connection, and the bottom plate are connected with the side walls of the upright post through a fastening piece; convex ribs are molded on an outer side wall of the upright post along the length direction; a guiding grooves which are matched with the convex ribs are formed at the bottom of the bottom plate; and the outer side wall of the upright post is also provided with protrusions which prop against the lower edge of the bottom plate. Compared with the prior art, the connection structure has the advantages that: due to vertical connection of the detachable connecting joint, the bottom plate of the connecting joint and the upright post are connected by irregular bolts, and the connecting structure realizes detachable connection, and also can guarantee tight adhesion of the side walls of two sides of the upright post with the composite structure; and seamless connection between the side walls of two sides of the upright post is realized, and the strength and rigidity of the upright post are obviously improved.