摘要:
A spring assembly includes a substrate, an inner coil spring, and an outer coil spring arranged outside the inner coil spring. One of the inner coil spring and the outer coil spring includes an end turn portion, the end turn portion forming a support wall for an other of the inner coil spring and the outer coil spring.
摘要:
A riveting tool configured to install a plurality of fasteners simultaneously is provided including a body having a generally central cavity. A strike surface is arranged at a first end of the body and a plurality of contactors extends generally outwards from a second, opposite end of the body. Each contactor includes an engagement surface configured to contact a surface of an adjacent fastener when a force is applied to the strike surface. A biasing mechanism is arranged within the cavity adjacent an upper cavity surface. A dowel is positioned within the cavity adjacent the biasing mechanism. The dowel is configured to engage a portion of an adjacent nut plate and translate within the cavity.
摘要:
A metal member defining a hole in which the hole is reinforced by forming a flange and turning the flange back upon itself so that the rolled outer surface of the flange defines the perimeter of the hole. The sheared edge is spaced from the perimeter of the hole. The shaft of the fastener inserted in the hole contacts a non-sheared surface. A reinforcement ring may be assembled around the flange.
摘要:
A shielding assembly includes a frame including a main body, the main body defining at least one retaining hole; and a cover including a main board, the main panel including retaining elements and rims. The number of the retaining elements is the same as the number of the retaining holes, each rim protruding outwardly from a distal end of one of retaining elements. Each retaining element passes through one of the retaining holes, and each rim is latched with the portions of the frame surrounding the retaining holes.
摘要:
An article of jewelry including a pliable strand; and a plurality of precious or semiprecious objects movably positioned along the pliable strand. Each of the plurality of objects including a magnetic insert extending between opposing surfaces, which itself is formed from two magnets separated by a magnetic stabilizer and aligned such that the opposing ends of the magnetic insert have the same polarity thereby creating repulsive forces between each of the plurality of objects along the strand.
摘要:
An article of jewelry and method of manufacture, including a pliable strand; and a plurality of precious or semiprecious objects movably positioned along the pliable strand. Each of the plurality of objects including a magnetic insert extending between opposing surfaces, which itself is formed from two magnets separated by a magnetic stabilizer and aligned such that the opposing ends of the magnetic insert have the same polarity thereby creating repulsive forces between each of the plurality of objects along the strand.
摘要:
A dual bushing installation kit includes a first metal bushing and a second metal bushing. The first metal bushing can include a first body having first and second ends. The first and second ends are connected by a first outer surface having a first outer circumference and a first inner surface having a first inner circumference. The second metal bushing is defined by a second body having first and second ends. The first and second ends are connected by a second outer surface having a second outer circumference and a second inner surface having a second inner circumference. The second outer circumference is dimensioned to be substantially conforming with the first inner circumference such that the second bushing is closely receivable by a first opening of the first bushing. Both the second outer circumference and the first inner circumference can be expanded in an outwardly radial direction.
摘要:
A stack arrangement has a first plate-shaped workpiece (12), at least one another plate-shaped workpiece, and an eyelet (14; 34) that connects the first workpiece (12) and the at least one another workpiece (13), with material of the first workpiece (12) being drawn through a through-opening (15) in the at least one another workpiece (13), and with a rim (17) of the through-opening (15) of the at least one another workpiece (13) conically narrowing in a direction of the first workpiece (12).
摘要:
Disclosed is a method of manufacturing a multilayered tube, including: preparing an outer tube, an inner tube having an outer diameter of 95˜98% of an inner diameter of the outer tube, and dies with a shaping void having a diameter of 100.20˜100.30% of an outer diameter of the outer tube; mounting the outer tube on the shaping void, with the inner tube inserted into the outer tube; plastically expanding the inner tube to be brought into contact with the outer tube by injecting a fluid into the inner tube until a pressure of the fluid reaches a first forming pressure inside the inner tube; elastically expanding the outer tube to be brought into contact with the shaping void by increasing the pressure of the fluid until the pressure of the fluid reaches a second forming pressure inside the inner tube; and elastically recovering the outer tube to allow the outer tube and the inner tube to be coupled to each other by removing the fluid from the inner tube, wherein the first forming pressure is in the range of 10˜20% of yield strength of the inner tube, and the second forming pressure is in the range of 10˜20% of yield strength of the outer tube and is maintained for 2˜3 seconds.
摘要:
There is provided a blind rivet including an axially extending hollow tubular body having a tail end face at one end and a pre-formed radially enlarged flange at the other end, together with a mandrel having a stem which extends co-axially though the body and having enlarged head adjacent the tail end of the body, the stem having a weakened region immediately adjacent the head. There is also provided a method of fastening at least two workpieces using such a blind rivet, including providing the blind side of the workpieces with a countersunk region to accommodate the conically deformed tail end of the body after setting, substantially flush therewith.