32results about How to "Contact flat" patented technology

The invention relates to a rotatable bridge frame. The rotatable bridge frame comprises a rotating mechanism, a climbing mechanism, an operating platform and a driving mechanism. The climbing mechanism comprises a space support, an upper end cover and a lower end cover, wherein the space support is arranged vertically, and the upper end cover and the lower end cover are up-and-down opposite to each other; through holes are formed in both the upper end cover and the lower end cover, and the upper end cover and the lower end cover are arranged on the space support in a sleeving mode through the through holes and are detachably connected with the space support; the rotating mechanism comprises a frame and a connecting part, wherein the frame is in a cylindrical shape and arranged vertically, the connecting part is fixed to the frame, and the frame is arranged on the space support between the upper end cover and the lower end cover in a sleeving mode; the frame is fixedly connected with the operating platform through the connecting part; and the driving mechanism drives the frame to rotate around the space support. According to the rotatable bridge frame, angle adjustment can be conducted on high, constructing efficiency is effectively improved, and constructing safety is guaranteed.

The invention discloses a zinc oxide nanorod array / polyvinyl carbazole / graphene hybridized fiber-shaped ultraviolet light detector based on interface optimization and a preparation method thereof. The preparation method comprises the following steps of using a fine metal wire as a substrate, growing a zinc oxide nanorod array at the surface of the ine metal wire in the vertical direction, uniformly covering the surface of the zinc oxide nanorod array with a polyvinyl carbazole thin layer, and coating the outer surface of the polyvinyl carbazole thin layer with a single layer of graphene thin film, wherein a fine sliver wire leading-out electrode is blended in the graphene thin film. The preparation method has the advantages that the problem of poor interface contact in the traditional fiber-shaped detector is solved, the surface-contact surface electrode is used for replacing the line-contact surface electrode, and the property of the detector is improved.

Various embodiments disclosed related to sealant tape. The sealant tape can include a cured product of a sealant composition including a curable liquid that includes a polysulfide, a polythioether, acopolymer thereof, or a combination thereof. The sealant composition also includes a curing agent for curing the curable liquid. Various embodiments provide cured products of the sealant composition,sealant tapes including the cured product, and sealant tapes including any suitable material with an adhesive pattern thereon.

The invention relates to the technical field of building construction, in particular to a small coiled material automatic unrolling trolley and a method for unrolling a coiled material. The small coiled material automatic unrolling trolley comprises a moving chassis. One end of the moving chassis is connected with a traction advancing mechanism, and the other end of the moving chassis is connected with a coiled material laying-pressing mechanism. The coiled material laying-pressing mechanism comprises a laying-pressing platform connected with the moving chassis. The lower end of the laying-pressing platform is in coupling connection with a laying through roller. A coiled-material-wound storing roller is erected on the laying-pressing platform through a storing support. One end of the coiled material is wound around the storing roller, and the other end of the coiled material covers the laying through roller and is pressed on the ground through the bottom end of the laying through roller. By means of the laying-pressing mechanism and a spray nozzle, the problem that the coiled material needs to be manually heated and then laid on the surface of a building, so that the working efficiency is low, and when the surface of the building is uneven, large gaps usually exist between the coiled material and the sinking parts or protruding parts of the building is solved.

The invention relates to a solenoid drive self-adaption thermal transfer ribbon printing mechanism which comprises a rack, a printer component, a thermal transfer ribbon and a base plate, wherein the printer component is arranged at one side of the rack, the base plate is arranged at the other side of the rack, and the thermal transfer ribbon is located between the printer component and the base plate; when a printing command is inputted to the printer component, and an electromagnetic drive mechanism drives a printing head to move to the direction of a print medium and close up to an elastic gasket, the printing head swings automatically under the support of a pin shaft, so that the thermal transfer ribbon and a printed object are completely flat to each other in the width direction of a printing breadth of the printing head, and the pressure is uniform, a printed stamp is even in depth and clear. Through the concrete design, the mechanism provided by the invention has the advantages of simple structure, convenient adjustment, reliable operation and the like.

The invention discloses a radio frequency power transistor based on an inversion process and a forming method thereof. The method comprises the following steps of: providing a substrate; forming a transition layer; forming a source connecting wire, a drain connecting wire and a gate connecting wire; forming interlayer dielectric layers on the transition layer, and filling the interlayer dielectric layers between the connecting wires; forming metal contact layers on the interlayer dielectric layers, and connecting the metal contact layers with the connecting wires; etching the metal contact layers to form N sources, N drains and 2N-1 gates, which are parallel mutually, wherein the sources, the gates and the drains are adjacently arranged sequentially according to the order of source-gate-drain-gate, the N sources are connected with the source connecting wire, the N drains are connected with the drain connecting wire, and the 2N-1 gates are connected with the gate connecting wire; forming a gate dielectric layer; and forming a graphene thin film as a channel layer. According to the method disclosed by the invention, the inversion process is adopted, the implementation is easy, and the method is stable and reliable; and the device disclosed by the invention has an inversion structure, the source-drain contact is small, and the gate control ability is strong.