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1157results about How to "Not easy to bend" patented technology

Three-hole transonic speed pressure probe

The invention discloses a three-hole transonic speed pressure probe. As a pneumatic technology develops, a transonic speed air flow appears more and more frequently, for instance, many air flows in an aeroengine reach a transonic speed state, so these transonic speed flow fields need to be measured and analyzed during development of engine components. Conventionally, the transonic speed flow fields are measured respectively by use of a total pressure probe and a direction probe so that total pressure and air flow directions can be obtained. When a flow speed reaches a transonic speed, the probes are under great resistance, and the probes are blown bent easily. When the flow speed reaches an ultrasonic speed, due to the existence of shock waves, there is large total pressure loss, and the influences exerted by the probes on the flow fields are quite large. Though these conventional probes can be used in an ultrasonic air flow, the influences exerted by the probes on the flow fields cannot be neglected, and the requirement for the strength of the probes is quite high. The novel three-hole transonic speed pressure probe provided by the invention is used for measuring the transonic speed flow fields. By use of the probe provided by the invention, the intensity of the shock waves in front of the probe can be weakened during measurement, the influences exerted by the probe on the flow fields are reduced, air-flow total pressure, static pressure, a Mach number and an air-flow deflection angle can be measured simultaneously, the resistance acting on the probe can be effectively reduced, and the firmness and reliability of the probe are guaranteed.
Owner:BEIHANG UNIV

Protection panel provided with touch input function for display window of electronic device, and manufacturing method therefor

A protection panel provided with a touch input function for a display window of an electronic device includes: a protection panel main body configured by a plastic plate having a glass plate fitting opening punched out so as to be larger than a transparent window portion, and a glass plate fitted in the glass plate fitting opening, a lower electrode sheet having a lower transparent electrode in a quadrilateral shape, and a lower circuit arranged at a periphery of the lower transparent electrode, the lower transparent electrode and the lower circuit being provided on an upper surface of a transparent resin film, the lower electrode sheet being attached to an upper surface of the protection panel main body, an upper electrode sheet having an upper transparent electrode in a quadrilateral shape, and an upper circuit arranged at a periphery of the upper transparent electrode, the upper transparent electrode and the upper circuit being provided on a lower surface of the transparent resin film, the upper electrode sheet being bonded to the lower electrode sheet at peripheral edges thereof so as to form a gap between the electrodes, and a decorative sheet having a decorative layer provided on at least one surface of a transparent resin film so as to hide the lower circuit and the upper circuit and form the transparent window portion, the decorative sheet being attached to an upper surface of the upper electrode sheet.
Owner:NISSHA PRINTING COMPANY

Loudspeaker, Speaker Diaphragm, and Suspension

The present invention relates to a hi-fi speaker. The diaphragm (1) is comprised of a frame member (2) and filler members (3) filled in the frame member (2). The frame member is comprised of flat plates all of which are arranged in parallel to the vibration direction and radially from the center of the diaphragm (1) toward the outer circumference, are fastened together at the radial center, and are fastened to the drive part (6). This frame member (2) has a high rigidity. The filler members (3) are comprised of foamed material etc. This diaphragm (1) does not have any skins, therefore also does not have any problem with resonance. The sound is emitted from the filler members (3). In the suspension (7), rod-like members (12) are fastened in a line at the both ends of the first leaf spring (11), second leaf springs (13) are fastened to the both ends of the rod-like members perpendicular to the rod-like members, and the both ends of the second leaf springs are fastened to unmovable parts of the speaker. The characteristic resonance occurring inside this suspension is slight and there is little displacement in directions other than the vibration direction. It is possible to use the present invention to form an edgeless plane diaphragm speaker system free of the effects of characteristic resonance and reproducing sound with a high fidelity.
Owner:BEAM TECH KULERU HACHIOJI 1109

Variable-rigidity flexible mechanical arm module and control method thereof

The invention relates to a variable-rigidity flexible mechanical arm module and a control method thereof. The variable-rigidity flexible mechanical arm module comprises two connecting plates (1) arranged on two sides, and a plurality of silica gel inflatable bags (2) are connected between the two connecting plates (1), wherein the plurality of silica gel inflatable bags (2) comprise variable stiffness silica gel inflatable bags which are used for generating an antagonistic effect and are arranged in the middle of the two connecting plates (1), and further comprise curved silica gel inflatablebags which are uniformly distributed around the two connecting plates (1) and are used for controlling the deformation shape; and each silica gel inflatable bag (2) is connected with an air pipe, theconnecting plates (1) are provided with pipeline passing holes (4) for allowing the air pipes to pass through, and the connecting plates (1) are further provided with connecting structures which can be in butt joint with a connecting plate of other flexible mechanical arm module so that the plurality of flexible mechanical arm modules can be connected in series. The variable-rigidity flexible mechanical arm module is simple in structure, convenient to assemble and flexible in movement; and the control method of the flexible mechanical arm module is efficient in work and the control precision is high.
Owner:FUZHOU UNIV

Dual-band wearable antenna with switchable working modes

The invention provides a dual-band wearable antenna with switchable working modes, and belongs to the technical field of antennas. The adopted technical scheme is that the dual-band wearable antenna comprises upper and lower layers of dielectric substrates. A radiation patch is arranged at the upper surface of the upper layer substrate. A grounding plate is arranged at the lower surface of the lower layer substrate. The radiation patch and the grounding plate are connected by segmented metalized through holes. Symmetrically distributed rectangular grooves are arranged at the left and right sides of the metal radiation patch. The segmented metalized through holes are connected by a segment of conductor strip. The antenna adopts a coaxial probe for direct feed. A coaxial internal conductor extends to the radiation patch from the grounding plate. A circle of circular groove is etched around a feeding point so as to increase inductive reactance, and thus impedance matching is facilitated. Problems in the prior art that the wearable antenna cannot meet the requirements of people for miniaturization, integration and wearing facilitating are mainly solved by the dual-band wearable antenna with the switchable working modes.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
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