95results about How to "Change flexibility" patented technology

An apparatus for forming at least one three-dimensional article by fusing parts of a powder bed layer-wise. The apparatus comprising a powder distributor and an energy beam for fusing the powder layer. Said powder distributor comprises a first part being an elongated rod provided movable at a predetermined distance above the powder bed and with its central axis in parallel with a top surface of said work table and second part being a metal foil having at least a first and a second opposite edge portions. Said metal foil is provided between said elongated rod and said work table, said first and second opposite edge portions are attached to said elongated rod so that a distance between said first and second edge portions is smaller than the distance between said first and second edge portions of said metal foil when said metal foil is in a flat position.

An implantable cardiac stimulation lead system for use with a stimulation device includes a lead body preferably having an outer diameter of less than 4 French and formed of a biocompatible material having a Young's modulus of at least 20,000 pounds per square inch. In the lead body, an inner insulator is composed of a suitable polymer such as PTFE or ETFE with an outer peripheral surface formed with a helical groove containing a conductor extending between a proximal connector and a distal tip electrode, and an outer insulator composed of polyurethane or silicone rubber or a combination thereof is positioned around the inner insulator. The lead system may be formed with a lumen for receiving a guidewire longitudinally through the lead body. A pair of insulated conductors may be received in the helical groove, one extending to the distal tip electrode, the other extending to a ring electrode proximally spaced from the distal tip electrode.

An object of the present invention is to provide a semiconductor device which has flexibility and resistance to a physical change such as bending and a method for manufacturing the semiconductor device. A semiconductor device of the present invention includes a plurality of transistors provided over a flexible substrate, each of which has a semiconductor film, a gate electrode provided over the semiconductor film with a gate insulating film therebetween, and an interlayer insulating film provided to cover the gate electrode, and a bending portion provided between the plurality of transistors, in which the bending portion is provided by filling an opening formed in the interlayer insulating film with a material having a lower elastic modulus, a material having a lower glass transition point, or a material having a higher plasticity than that of the interlayer insulating film.

A scraper blade preferably configured for use with a reciprocating saw. The blade has a first end comprising a mounting structure, and a second end with a cutting edge. The second end is coupled with and spaced apart from the first end. Preferably, the first end is configured to be mounted in a reciprocating saw chuck and the first and second ends are integral. Further, the first and second ends are preferably manufactured from heat treated steel comprising between approximately 0.45 to 1.05% carbon and between approximately 0.3 to 1.0% manganese. Preferably, the steel has a yield tensile strength of between approximately 150,000 to 250,000 pounds per square inch, a modulus of elasticity of between approximately 20,000 to 40,000 kilopounds per square inch, and a hardness on the Rockwell C scale of between approximately 30 to 60.

The present invention relates to novel molecules (Fc variants) comprising at least one antigen binding region and an Fc region that further comprises a modified hinge which alters the binding of Fc to one or more Fc ligand (e.g., FcγRs) and/or modulates effector function. More specifically, this invention provides Fc variants that have modified binding affinity to one or more FcγR and/or CIq. Additionally, the Fc variants have altered antibody-dependent cell-mediated cytotoxicity (ADCC) and/or complement dependent cytotoxicity (CDC) activity. The invention further provides methods and protocols for the application of said Fc variants particularly for therapeutic purposes.

A water filter cartridge having a housing with an inlet nozzle with a concentric, smaller outlet nozzle extending through the inlet nozzle with a space therebetween defining an inlet to a flow path passing through a filter and through the outlet nozzle. A diaphragm valve mounted to the outlet nozzle blocks upstream flow out of the inlet when the cartridge is not in use. An umbrella valve mounted on the end of the filter blocks downstream flow out of the outlet nozzle when the cartridge is not in use, thus reducing leakage when the cartridge is removed from the appliance.

A reclining device (1) is described having a support (10) which can be moved back and forth between different positions automatically and continuously, so that the spinal column and other joints, for example of the hip, knee, leg, can be moved and exercised specifically.

The invention discloses a random-copolymerization polypropylene toughening modified material which is formed by carrying out melt blending modification on the following components in parts by weight: 100 parts of random-copolymerization polypropylene, 0-15 parts of polypropylene homopolymer, 5-20 parts of ethylene copolymer, 2.5-12 parts of modifying master batch and 0.1-0.4 part of antioxidant. The tensile strength of the material is 24.7-27.3MPa, the notch impact strength at 23 DEG C is 35.0-60.5 kJ/m<2>, the notch impact strength at 0 DEG C is 7.6-20.6 kJ/m<2>, and the Vicat softening point is 131.2-138.2 DEG C. The invention also discloses a preparation method of the random-copolymerization polypropylene toughening modified material. The random-copolymerization polypropylene toughening modified material disclosed by the invention has favorable rigidity/toughness balance performance and heat resistance, can be widely used in the industries of construction materials, furniture, automobiles, electric appliances, electronics, electric appliances and the like, and can be used for preparing various profiles, tubes, films, sheets, plates, injection molding parts and the like. Besides, the preparation method is simple, can shorten the molding processing time, and can also lower the energy consumption and the production cost, thereby having high practicality.

An interface for an industrial control system provides, at a server side, a set of objects for programmer use. Instances of object provider objects, linked to each of the software objects, provide a uniform interface for the software objects allowing software objects from different vendors to be used while preserving a common programmer interface.

The invention discloses a graphene double-layer electroactive membrane and a preparation method thereof. The graphene double-layer electroactive membrane is composed of a flexible conducting layer anda flexible polymer layer. The preparation method comprises mixing and reacting flake graphite powder, NaNO3, sulfuric acid, KMnO4 and deionized water, and performing washing and drying processes to obtain graphene oxide; mixing and ultrasonic-dispersing the graphene oxide, hydrazine hydrate, ammonium hydroxide and deionized water for reaction to obtain reduced graphene oxide dispersion liquid; dropwise or rotatingly applying the reduced graphene oxide dispersion liquid onto a flexible polymer layer-polymer membrane and performing a drying process to form the flexible conducting layer onto thepolymer membrane to obtain the graphene double-layer electroactive membrane. The graphene double-layer electroactive membrane has the advantages of high responsiveness, low power, broad pressure range and the like when being electrically driven, and can be applied to the fields of flexible wearable equipment, micro motor actuators and micro-robots.

The invention relates to a preparation method of dialdehyde carboxymethyl chitosan and belongs to the technical field of chitosan preparation. Through dissolution, oxidation reaction, standing, aftertreatment and drying, the dialdehyde carboxymethyl chitosan is prepared. Compared with the existing p-carboxymethyl chitosan modification research technology, the preparation method utilizes periodic acid and its sodium salt as oxidizing agents, under strong selective oxidation effects of the oxidizing agents, carboxymethyl chitosan is oxidation-modified by opening of a pyranoid ring on a molecular chain and then generation of the novel dialdehyde group so that a relatively-high molecular weight oxidation product can be obtained, the oxidation product molecular structure can be changed, reaction activity can be improved and molecular chain rigidity can be reduced. The preparation method has important effects of improving carboxymethyl chitosan polymer crystallinity, molecular chain flexibility and gel performances.

The invention discloses a micro-nano scale wave structure in a macroscopic composite material and a preparation method thereof, and belongs to the technical field of functional composite materials. Atwo-dimensional nano-material dispersion solution is self-assembled to form a macroscopic structure including a thin film, gel and the like; a carbon-nitrogen compound is generated by utilizing thermal chemical reaction and the state of a two-dimensional composite material is regulated and controlled to form the micro-nano scale wave structure. The micro-nano scale wave structure disclosed by theinvention has the characteristics that a preparation technology is simple, the size and shape of the composite material are easy to regulate and control, the mechanical elasticity, an electronic structure or a surface state of the material is adjustable and the like; a foundation is laid for researches and application of an assembled macroscopic material to the fields including flexible conductors, micromechanical electronics and flexible energy storage devices, catalytic carriers and the like.

The invention provides an ultraviolet light curing composition used for 3D printing, and a preparation method and an application thereof. The composition comprises an ultraviolet light curing prepolymer as shown in a formula (I) which is described in the specification, wherein the usage amount of the ultraviolet light curing prepolymer accounts for 55 wt% or more of the total weight of the composition. The ultraviolet light curing composition provided by the invention has the advantages of high tensile strength, etc., and can be used as a 3D printing material and a light curing material; curedresin prepared from the composition provided by the invention has the advantages of low shrinkage rate, high-temperature resistance, fast curing speed, etc., and is applicable to curing through a manner of 3D printing.

The present invention relates to a quick-breaking and quick-curing type asphalt emulsifier preparation method, which comprises the following specific steps: adding a reaction mixture comprising a long chain fatty amine, chlorinated olefin and halogenated fatty acid to a reaction vessel, adding an alcohol solvent, and carrying out a stirring reaction to obtain an alkyl substituted betaine type intermediate solution; adding aliphatic tertiary amine, water and hydrochloric acid to the reaction vessel to obtain a tertiary amine hydrochlorate solution, then adding epichlorohydrin to the tertiary amine hydrochlorate solution, and carrying out a stirring reaction to obtain a quaternary ammonium salt intermediate solution; and adding the quaternary ammonium salt intermediate solution to the alkyl substituted betaine type intermediate solution in a dropwise manner, and carrying out a stirring reaction to obtain the quick-breaking and quick-curing type asphalt emulsifier. According to the present invention, the quick-breaking and quick-curing type asphalt emulsifier has the following beneficial effects that: an excellent emulsifying property is provided, and petroleum asphalts with different production places and different types can be emulsified; and advantages of uniform and fine asphalt emulsion, good storage stability, strong adaptability to aggregate, good adhesion, and flexible emulsifier molecule structure design, and the like are provided.

At least a portion of fabrics for use in medical devices is formed from polymeric materials. The fabrics may be uncoated, partially coated or fully coated with one or more layers of a polymer. The fabrics may be used for the leaflets and/or cuffs of prosthetic heart valves and as a component of other medical devices.

The invention discloses a video content distributed issuing method, which comprises the steps of issued video-on-demand content injection, live broadcast playback on-line procedure and localization channel support. According to the invention, one-point access and global scheduling can be realized based on media asset issuing systems nationwide, service localization loading requirements are met at the same time, and a butt-joint method, which is unified in standard, convenient and efficient, is provided for each party of an industry chain; an original technical framework of an IPTV system is reserved, defects of decentralized information and poor flexibility among existing systems are changed through determination of interconnecting and interworking standard and processing procedures, and the processing efficiency and the service supporting capacity can be significantly improved; and a current situation of repeated investment caused by independent construction of each area of the IPTV system at present is changed, loose coupling among the systems can be realized based on cloud technologies, and the hardware cost of a server is greatly reduced.

The use (call origination, call reception and/or communication (handoff)) of a CDMA-WLL (Wireless Local Loop) mobile station (location-limited mobile station) outside its registered areas is functionally prohibited. The registered areas are determined with regard to each CDMA-WLL mobile station and information concerning the registered areas is stored in a CDMA-WLL controller. For example, when a CDMA-WLL mobile station originated a call, a mobile services switching center refers to the CDMA-WLL controller and thereby searches for the registered areas of the CDMA-WLL mobile station, compares the registered areas with present location areas of the CDMA-WLL mobile station, and executes a connection establishment process for the CDMA-WLL mobile station if a match occurred in the comparison. By such functional location limitation of the CDMA-WLL mobile station, the differentiation between the CDMA-WLL mobile stations and ordinary (location-unlimited) mobile stations can be made properly, and the balance between the CDMA-WLL mobile stations and fixed (wired) telephone sets can be maintained appropriately.