3results about How to "Increase bend radius" patented technology

The application discloses a kind of hollow and solid core fiber hybrid fiber bundle and cable comprising it, belong to optical fiber communication technical field, including hollow optical fiber, solid core optical fiber (solid core optical fiber can be G.652D, G.654E or G.655 etc.), first layer resin and second layer resin;It is arranged at the center position of fiber bundle by hollow optical fiber, to ensure that the bending radius of hollow optical fiber is maximum when fiber bundle bends, reduce the bending loss of hollow optical fiber, while a layer of low modulus resin is coated on the outer periphery of hollow optical fiber to reduce the bending stress of hollow optical fiber;At the same time, high modulus resin is filled in the outer periphery of low modulus resin to ensure the mechanical properties of fiber bundle, and the multiple solid core optical fibers mixed in the fiber bundle are arranged as annular distribution on the outer side of hollow optical fiber by setting, to protect the middle hollow optical fiber by solid core optical fiber, further improve the mechanical strength of the whole fiber bundle.

This utility model relates to the field of elevator auxiliary accessories technology, and in particular to a compensating chain for elevators with an ultra-large bending radius. The utility model includes: an iron chain; an inner layer of PVC covering the outer surface of the iron chain; a steel wire mesh surrounding the inner PVC layer; and an outer layer of PVC covering the steel wire mesh. The thickness of the inner PVC layer is 2-4 mm. The steel wire mesh is made of 0.3-1.0 mm ultra-tough steel wire. The mesh spacing of the steel wire mesh is 0.5-10 mm. The thickness of the outer PVC layer is 2-5 mm. The technical solution of this utility model solves the problem in the prior art where the PVC outer layer of the compensating chain breaks due to wear, corrosion, and aging after long-term use, leading to elevator operational safety issues.

The utility model discloses a dental multifunctional motor handle, including motor, motor has: motor casing, the rear end cover center position is protruding a circular accommodating cavity to rear, motor shaft, the tail of motor shaft is equipped with round magnet, and the round magnet is radial magnetization, circuit board, is located the rear of accommodating cavity, and is separated with the cavity wall of accommodating cavity between the round magnet, protection shell and apron, the rear end face of rear end cover, the inside surface of protection shell with apron constitute the protection cavity of accommodating circuit board. The utility model control is more accurate and stable, and can realize lower speed and realize greater torsional force, can satisfy dental implant and dental root canal treatment demand, guarantee the sealing of the bearing room of motor shaft and round magnet, prevent water vapor from infiltrating, avoid cooling gas and motor internal contact.