A steel wire is formed of a steel containing: not less than 0.6 mass % and not more than 0.7 mass % carbon, not less than 1.2 mass % and not more than 2.1 mass % silicon, not less than 0.2 mass % and not more than 0.6 mass % manganese, not less than 1.4 mass % and not more than 2 mass % chromium, and not less than 0.15 mass % and not more than 0.3 mass % vanadium, with the balance being iron and unavoidable impurities. The steel includes a matrix made up of tempered martensite, and a non-metallic inclusion present in the matrix. When √area of the non-metallic inclusion is represented as H.sub.1 and √area of a region including both the non-metallic inclusion and a decreased-hardness portion is represented as H.sub.2, a ratio of H.sub.2 to H.sub.1, or, H.sub.2/H.sub.1 is at least 1 and less than 1.3.

Various embodiments of a spiral shaped element and embedded wavy materials are disclosed for use in a shock mitigating material to dissipate the energy associated with the impact of an object. The shock mitigating material can be used in helmets, bumpers, bullet proof vests, military armor, and other applications. One embodiment, among others, is a shock mitigating material having a plurality of spiral shaped elements, each having a circular cross section, and each being tapered from a large outside end to a small inside end but also having an embedded wavy material that can induce shear waves to mitigate the shock pressure and impulse.

An elastic torque sensor utilizing a torsion spring and components to measure the movement of the spring output side and input side. The torque sensor is in communication with a programmable controller. The components detecting movement or distortion of the either side of the torsion spring are not positioned within the load path experienced by the torsion spring. This configuration allows the detected position of the spring input and output sides not to be distorted by hysteresis. The components comprise a sensor disk that is attached to either the spring input or output side. The sensor disk is not within the spring load path. The sensor disk rotates with the torsion spring. The sensor disk is mark so that the degree of rotation can be detected by a stationary sensor also not in the load path. The sensor disk can send a signal to a programmable controller.

The present disclosure relates to a vibration reduction device, an electronic device and mobile equipment containing same. The vibration reduction device comprises: a first fixing component (10) which is a frame structure (11); a second fixing component (100) arranged in the center or near the center position of the first fixing component (10); and a vibration reduction connecting component (50) positioned between the first fixing component (10) and the second fixing component (100) and used for connecting both together. The vibration reduction connecting component (50) comprises a vibration reduction connecting frame (53) connected to the frame structure (11), and an inverted U-shaped structure (51) positioned in the vibration reduction connecting frame (53), connected to the lower part of the vibration reduction connecting frame (53) through supporting legs and connected with the second fixing component (100). The vibration reduction device of the present disclosure can provide excellent vibration reduction and impact-prevention protection for electronic products and precision electronic equipment. It is especially able to protect electronic products and precision electronic equipment installed on mobile equipment, such as a vehicle, against physical damage while under severe travelling conditions, as well as ensure their normal operation. The vibration reduction device according to the present disclosure not only has a simple structure and occupies little space, but also has simple installation and long service life, and can be suitable for varying load conditions.

A leaf spring (100) comprises at least two spring arms (120, 130) and an inner fixing hole (110). The at least two spring arms (120, 130) are evenly distributed around a center of the inner fixing hole (110); each spring arm is of the same structure, and an outer fixing hole (122) is disposed at an outermost end of each spring arm. Further provided are a leaf spring group and a compressor. The leaf spring group comprises multiple leaf springs, and the compressor comprises the leaf spring group. The provided leaf spring has a structure of multiple concentric circular arms or a structure of concentric vortex arms, and the leaf spring has smaller equivalent mass, so that the rigidity and inherent frequency requirements can be met without the need of increasing the mass of the components, thereby reducing the product mass and saving the cost.

A spring for sun visors includes a torque application section that extends from a holding section and applies torque when a main section is rotating. The holding section has a flat section that receives torque from a shaft. The torque application section has a first spring piece extending from one end of the holding section and a second spring piece extending from the other end of the holding section and being bent so as to fold back. The first spring piece has a first tip section that includes overhanging sections that are narrower than the width of the holding section. The second spring piece has a second tip section that is arranged so as to overlap on the outside of the overhanging sections. The overhanging sections are provided in an area extending from the torque receiving section to the first tip section.

A powder composition including a resin and from 5% to 70%, by weight based on powder composition weight, of a corrosion-inhibiting pigment, optionally including from 0% to 65%, by weight based on powder composition weight, zinc, the composition being substantially free from pigment providing a metallic effect is provided. The corrosion-inhibiting pigment may be present in amounts of up to 50%, by weight based on powder composition weight, for example, up to 35%. A method for coating a substrate with the powder composition and the coated substrate so formed are also provided.

A device for producing a spring wire includes a wire production apparatus which is designed such that a spring wire can be produced from a raw material, in particular by drawing; a checking unit which is designed such that the spring wire can be checked for flaws, in particular material flaws and surface flaws; and a laser marking unit which is designed such that defective regions of the spring wire, in particular regions of the spring wire having material and surface flaws, can be marked with a laser marking such that part of the surface of the spring wire can be removed or part of the surface of the spring wire can be tempered in such a manner that the color of the surface of the spring wire is changed in this part. The wire production apparatus is designed such that the spring wire can be guided past the checking unit and past the laser marking unit.

A copper-coated steel wire includes a core wire made of a stainless steel, and a coating layer made of copper or a copper alloy and covering an outer peripheral surface of the core wire. In a cross section perpendicular to a longitudinal direction of the core wire, the outer peripheral surface of the core wire has a value of an arithmetic mean roughness Ra of not less than 25% and not more than 90% of a thickness of the coating layer.

An apparatus for positioning a strap around an object includes a handle for being grasped by a user of the apparatus. The apparatus further includes an arm portion having a first end coupled to the handle portion and an opposite second end having a coupling mechanism coupled at or nearby for selectively coupling a portion of the strap to the second end of the arm portion. When the handle portion is grasped by the user of the apparatus adjacent a side of the object the arm portion is sized and configured to be movable among: a first positioning wherein the arm portion extends outward from the handle and the user such that the second end of the arm portion extends a distance beyond a far side of the object, and a second positioning wherein the arm portion wraps at least partially around the object.