69results about How to "Different stiffness" patented technology

A surgical device includes a plurality of cameras integrated therein. The view of each of the plurality of cameras can be integrated together to provide a composite image. A surgical tool that includes an integrated camera may be used in conjunction with the surgical device. The image produced by the camera integrated with the surgical tool may be associated with the composite image generated by the plurality of cameras integrated in the surgical device. The position and orientation of the cameras and / or the surgical tool can be tracked, and the surgical tool can be rendered as transparent on the composite image. A surgical device may be powered by a hydraulic system, thereby reducing electromagnetic interference with tracking devices.

A surgical device includes one or more cameras integrated therein. The view of each of the one or more cameras can be integrated together and provided to a surgeon display and / or an assistant display. A surgical tool that includes an integrated camera may be used in conjunction with the surgical device. The image produced by the camera integrated with the surgical tool may be associated with the images generated by the one or more cameras integrated in the surgical device. The position and orientation of the cameras and / or the surgical tool can be tracked, and the surgical tool can be rendered as at least partially transparent. A surgical device may be powered by a hydraulic system, thereby reducing electromagnetic interference with tracking devices.

A communication device comprising a microphone, a conduction interface and an electromechanical force transducer mounted to the conduction interface to drive the interface to conduct sound to a user by bone conduction, characterised in that the transducer has an intended operative frequency range and comprises a resonant element having a frequency distribution of modes in the operative frequency range and coupling means for mounting the transducer to the interface.

A surgical device includes a plurality of cameras integrated therein. The view of each of the plurality of cameras can be integrated together to provide a composite image. A surgical tool that includes an integrated camera may be used in conjunction with the surgical device. The image produced by the camera integrated with the surgical tool may be associated with the composite image generated by the plurality of cameras integrated in the surgical device. The position and orientation of the cameras and / or the surgical tool can be tracked, and the surgical tool can be rendered as transparent on the composite image. A surgical device may be powered by a hydraulic system, thereby reducing electromagnetic interference with tracking devices.

The present invention relates to free-form structures made by additive manufacturing, and methods for the manufacture thereof. The rigid free-form structures comprise a lattice structure which is impregnated by a polymeric or other material. The rigid free-form structures may be used in wound treatment, e.g. as a facial mask.

A device for anchoring a prosthetic heart valve or annuloplasty ring to a valve annulus in a heart and a method of implanting same is disclosed. The device can include a prosthetic valve or annuloplasty ring with one or more anchors configured to be threaded or otherwise passed underneath a native leaflet and / or subvalvular tissue to secure the device at the native annulus.

A surgical device includes a plurality of cameras integrated therein. The view of each of the plurality of cameras can be integrated together to provide a composite image. A surgical tool that includes an integrated camera may be used in conjunction with the surgical device. The image produced by the camera integrated with the surgical tool may be associated with the composite image generated by the plurality of cameras integrated in the surgical device. The position and orientation of the cameras and / or the surgical tool can be tracked, and the surgical tool can be rendered as transparent on the composite image. A surgical device may be powered by a hydraulic system, thereby reducing electromagnetic interference with tracking devices.

A surgical device includes a plurality of cameras integrated therein. The view of each of the plurality of cameras can be integrated together to provide a composite image. A surgical tool that includes an integrated camera may be used in conjunction with the surgical device. The image produced by the camera integrated with the surgical tool may be associated with the composite image generated by the plurality of cameras integrated in the surgical device. The position and orientation of the cameras and / or the surgical tool can be tracked, and the surgical tool can be rendered as transparent on the composite image. A surgical device may be powered by a hydraulic system, thereby reducing electromagnetic interference with tracking devices.

A fire control group is capable of operating in multiple, user-selectable modes. The fire control group includes two disconnectors, a selector switch, and a trigger with a tang. The selector switch has a series of cams which interact with the tang of the trigger and surfaces of the two disconnectors to provide different hammer break points (i.e., distances from neutral), reset distances, overtravel distances, and pull weights, depending on a rotational position of the selector switch. In one embodiment, the fire control group is capable of a safe mode, a 2-stage trigger pull, and a 1-stage trigger pull.

The invention discloses a nonlinear energy trap vibration absorbing device for whole satellite vibration suppression. The nonlinear energy trap vibration absorbing device comprises two geometric linear springs, a supporting linear spring, a mass block, a guide rail, a bracket and a bottom plate; the vibration absorbing device is installed along the wall of an adapter cone shell; and the mass blockmoves along the guide rail to drive the three linear springs to move to achieve the relatively-pure cubic stiffness characteristic, and a nonlinear energy trap device is formed to achieve the vibration absorption effect. The nonlinear energy trap vibration absorbing device is arranged on the wall of the adapter cone shell of a satellite, the linear springs are guided in the direction of the guiderail, and the longitudinal and transverse vibration suppression effect is achieved; and meanwhile, the nonlinear energy trap device is simple in structure and easy to adjust and install and has the advantages that the robustness is good, effective broadband vibration suppression can be achieved and an external power supply is not needed.

A stabilizer bar assembly for an automotive vehicle includes a stabilizer bar, a bushing mounted to the stabilizer bar that has a first stiffness in a first radial plane, and a second stiffness in a second radial plane approximately perpendicular to the first radial plane, a bushing retainer in mechanically compressive engagement with the bushing such that the bushing is in frictional engagement with the stabilizer bar, thereby preventing relative movement of the bushing and the stabilizer bar, and a mounting bracket adapted to connect the stabilizer bar to the automotive vehicle.

A recording medium conveying device comprising: a master roll holder to hold a master roll of a recording medium; a platen to support the recording medium supplied from the master roll holder in an image recording section; a conveyance roller positioned upstream of the platen to convey the recording medium by adding driving force to the recording medium and a guide positioned near the platen to guide the recording medium, wherein the guide changes an angle of the recording medium against the platen according to a stiffness of the recording medium.

The invention relates to a six-degree-of-freedom connector for an ultra-large floating body composed of modules. The six-degree-of-freedom connector comprises a central control room. An X-axis direction, a Y-axis direction and a Z-axis direction of the central control room are respectively provided with at least one damping device. Each damping device comprises a piston rod. One end of each piston rod is located in a limiting room of the central control room and the other end of each piston rod is rotatably connected with a base. A damping medium is arranged between each base and the central control room. Each base is fixedly connected with a testing tool. Each piston rod performs linear movement in the central control room. A rotary damping device is arranged between each piston rod and each base. A limiting plate fixedly connected with the end portion of each piston rod is arranged in each limiting room. The six-degree-of-freedom connector for the ultra-large floating body composed of modules has following beneficial effects: due to the emulation model experiment and the wave loading model test of a module flexible function for ultra-large floating body, detailed tests can be carried out on such aspects as structural stress, displacement measurement and dynamic loads; safety and applicability of the structure of the ultra-large floating body in the sea can be verified; and the basis for structural design and a calculating method of the ultra-large floating body in the sea is given.

The invention provides a discontinuous long fiber reinforced thermoplastic composite material mold pressing precast body and a preparation method thereof. The mold pressing precast body comprises slices formed by slitting / cutting of continuous fiber reinforced thermoplastic composite material preimpregnated sheets / preimpregnated yarns, wherein the length L range of the slices is 5-200 mm, the width W range of the slices is 2-30 mm, and the weight percentage content of fibers in the slices is 20-90 wt%; and high-strength isotropous complicated parts with high size stability can be prepared through secondary mold pressing of the precast body, so that the defects of easy warpup, fiber length loss, weaker part performances, anisotropic mechanical performances of continuous fiber reinforced composite materials and difficult machining of different-thickness complicated parts after mold pressing injection molding of short-fiber and long-fiber particles are made up.

The invention relates to a split-type embedded and combined elastic base plate for rail transit fasteners. The elastic base plate is characterized by comprising a basic elastic base plate body (1), through holes (3) are formed in the basic elastic base plate body (1), and elastic columns (2) are arranged in the through holes (3) in a penetrating mode, wherein the thickness of the basic elastic base plate body (1) is different from the height of each elastic column (2). The elastic base plate is simple in structure and convenient to manufacture; the rigidity of the basic elastic base plate body and the rigidity of the elastic columns can be adjusted at will according to different needs, so compatibility of the elastic base plate is improved; the elastic base plate is convenient to maintain and replace, reduces maintenance cost and improves the vibration and noise reduction performance.

A linear actuator suitable for mobilizing a load comprises: a leg linked to the load by one of its ends with a ball joint with three degrees of freedom in rotation; a plate that is mobile in translation along an axis belonging to a plane of a support of the actuator, said mobile plate being mechanically linked to the leg by its other end. The linear actuator also comprises at least one first elastic cable, fixed by one of its ends to the mobile plate, and fixed by its other end to the support, being engaged in a first pulley fixed to the support. The actuator can notably be used to mobilize a simulation platform mounted on a hexapod.

The invention relates to a high-pressure gas bulging thermoforming die of a boron steel pipe. The die comprises an upper die base and a lower die base, and is characterized in that an upper die forming insert is mounted on the lower surface of the upper die base; a lower die forming insert is mounted on the upper surface of the lower die base; the lower surface of the upper die forming insert and the upper surface of the lower die forming insert are the forming surface of a workpiece of the boron steel pipe; seal heads are arranged at the two ends of the workpiece of the boron steel pipe respectively; the front ends of the seal heads are in contact with the pipe ends of the workpiece of the boron steel pipe; an axial hydraulic cylinder or an air cylinder is connected to the rear ends of the seal heads; vent holes are formed in the centers of the seal heads; the front ends of the vent holes are communicated with the interior of the workpiece of the boron steel pipe; a high-pressure gas station is connected to the rear ends of the vent holes; cooling passages are arranged at the lower part of the upper die forming insert and the upper part of the lower die forming insert respectively and directly connected with a water pipe or connected with the water pipe through the upper die base and the lower die base. According to the die, the workpiece which has the material mechanical strength of 1,500 MPa and is variable in cross-section shape and circumference can be produced.

The invention provides an artificial heart valve annuloplastic ring. The artificial heart valve annuloplastic ring comprises an outer layer and an inner layer main body structure, wherein the outer layer covers the inner layer main body structure and is used for suturing heart tissues; the inner layer main body structure is provided with a tubular spiral structure formed by curling sheet materials, and the tubular spiral structure can adjust the rigidity of the annuloplastic ring. The artificial heart valve annuloplastic ring is simple in structure, easy to rigidity-adjust and convenient to manufacture and process.

The invention discloses a pre-collision system based on a shape memory alloy active protecting device. a sensor module acquires the relative distance and relative speed of an object and the image of the object, and transmitting the information to a collision pre-judging unit and a target type analyzing unit. The collision pre-judging unit simultaneously receives vehicle speed information from a vehicle CAN network, calculates the brake distance s and brake time t of the vehicle under maximum brake force according to the information, and then calculates the relative distance L from the vehicleto a front object after time t passes, L and s are compared, and thus, whether unavoidable collision occurs or not is judged. A target type analyzing unit processes and analyzes a target image so as to judge the type of the object. A pre-collision electronic control unit controls current applied to a shape memory alloy wire in the active protecting device on the basis of information of unavoidablecollision and information of the target type, thus, the rigidity and energy absorbing characteristics of the shape memory alloy wire are changed, and damage of collision to passengers in the vehicleand pedestrians is relieved.

A torsional vibration damping arrangement for a drivetrain of a vehicle includes a carrier arrangement that is rotatable around an axis of rotation, a deflection mass movable in a circumferential direction relative to the carrier arrangement, and at least one radially extending, elastically deformable restoring element by which the carrier arrangement and the deflection mass are coupled to be rotatable relative to one another. A supporting element is associated with the restoring element and movable radially relative to the restoring element by which the restoring element is supported in circumferential direction with respect to the carrier arrangement at a radial position of the supporting element. A stiffness of the coupling between the carrier arrangement and the deflection mass which is brought about in circumferential direction by the restoring element has an abrupt course at at least one radial position of the supporting element.