Abstract: A method for coating a metal workpiece with graphene includes exposing the metal workpiece to a carbon-containing precursor gas and a hydrogen gas in a processing chamber in a first phase, and to the carbon-containing precursor gas, the hydrogen gas and a first carrier gas in the processing chamber in a second phase after the first phase. A first flow rate of the carbon-containing precursor gas into the processing chamber is higher than a second flow rate of the carbon-containing precursor gas into the processing chamber, and a first flow rate of the hydrogen gas into the processing chamber is higher than a second flow rate of the hydrogen gas into the processing chamber. A first total gas pressure in the processing chamber in the first phase is lower than a second total gas pressure in the processing chamber in the second phase.

Abstract: A composite structure comprises a copper layer and first and second graphene layers sandwiching the copper layer, wherein the composite structure provides electron-path tunnels between the copper layer and the first and second graphene layers. The electron-path tunnels may enhance the electrical conductivity. A multilayer composite structure comprises a first copper layer, a first graphene layer on the first copper layer, a second graphene layer on the first graphene layer, and a second copper layer on the second graphene layer.

Abstract: A multilayer structure comprises a plurality of composite structures in a stacked configuration, each having a copper layer having a thickness of no larger than 25 ?m, and first and second graphene layers sandwiching the copper layer. The first graphene layer of a first composite structure among the plurality of composite structures directly contacts a second graphene layer of a second composite structure among the plurality of composite structures to form a graphene bi-layer structure. Either the first or second graphene layer of the graphene bi-layer structure comprises silver atoms, but not both. The silver atoms are ring-centered on graphene rings and delocalized inside the graphene rings.

Abstract: A method for forming a multilayer composite structure comprises providing a first sheet comprising a copper-comprising layer sandwiched by first and second graphene layers, wrapping the first sheet to form a first rod, and compacting the first rod to form a first multilayer composite structure.

Abstract: A wire-drawing method comprises providing a rod comprising a wrapped sheet, wherein the sheet comprises a plurality of copper layers and a plurality of graphene layers; extracting an inner layer of the wrapped sheet from the rod to form a spiral; and forming a wire by feeding the spiral through an opening of a die unit.

Abstract: The present disclosure provides a washer having a generally circular shape and is used for supporting a screw head. The shank of the screw penetrates the central hole of the washer. When viewed from a planar perspective, the outer edges of the washer have a sinusoidal shape with depressions and elevations.

Abstract: The present disclosure provides a washer having a generally circular shape and is used for supporting a screw head. The shank of the screw penetrates the central hole of the washer. When viewed from a planar perspective, the outer edges of the washer have a sinusoidal shape with depressions and elevations.

Abstract: A composite structure comprises a copper layer having a thickness of no larger than 25 ?m, and first and second graphene layers sandwiching the copper layer.

Abstract: A method for forming a multilayer composite structure comprises providing a first sheet comprising a copper-comprising layer sandwiched by first and second graphene layers, wrapping the first sheet to form a first rod, and compacting the first rod to form a first multilayer composite structure.

Abstract: A wire-drawing method comprises providing a rod comprising a wrapped sheet, wherein the sheet comprises a plurality of copper layers and a plurality of graphene layers; extracting an inner layer of the wrapped sheet from the rod to form a spiral; and forming a wire by feeding the spiral through an opening of a die unit.

Abstract: The present disclosure provides a clip assembly for jointing devices for a conveyor belt that includes a U-shaped clip intended to be secured and straddling an end of a conveyor belt with an overhanging of a front curved portion, or nose of the clip. The clip assembly further includes a tube secured in a front concave portion of each clip and a bracket having two cheeks secured to lateral ends of the tube. The cheeks are joined together at a rear by a connection portion. The securing of the cheeks is obtained by piercings on lateral ends of the tube. Branches of the clips are provided with through-holes to secure the clip with a stem. In one form, the branches of one or more clips in a set of clips are of unequal length.

Abstract: A device for linking a conveyor belt includes an upper plate and a lower plate. The upper plate includes a highly extendable armature and the lower plate includes an inextensible or quasi inextensible armature. The two plates can be fastened onto the ends of a conveyor belt inserted between the two plates, which as such transforms this conveyor belt into an endless belt.

Abstract: A composite structure comprises a copper layer and first and second graphene layers sandwiching the copper layer, wherein the composite structure provides electron-path tunnels between the copper layer and the first and second graphene layers. The electron-path tunnels may enhance the electrical conductivity. A multilayer composite structure comprises a first copper layer, a first graphene layer on the first copper layer, a second graphene layer on the first graphene layer, and a second copper layer on the second graphene layer.

Abstract: The present disclosure provides a clip assembly for jointing devices for a conveyor belt that includes a U-shaped clip intended to be secured and straddling an end of a conveyor belt with an overhanging of a front curved portion, or nose of the clip. The clip assembly further includes a tube secured in a front concave portion of each clip and a bracket having two cheeks secured to lateral ends of the tube. The cheeks are joined together at a rear by a connection portion. The securing of the cheeks is obtained by piercings on lateral ends of the tube. Branches of the clips are provided with through-holes to secure the clip with a stem. In one form, the branches of one or more clips in a set of clips are of unequal length.

Abstract: A device for linking a conveyor belt includes an upper plate and a lower plate. The upper plate includes a highly extendable armature and the lower plate includes an inextensible or quasi inextensible armature. The two plates can be fastened onto the ends of a conveyor belt inserted between the two plates, which as such transforms this conveyor belt into an endless belt.

Abstract: A conveyor belt joining staple including upper and lower staple plates situated at different levels joined by knuckles. The upper staple plate has through-holes for passage of staple attaching clip claws and the lower staple plate has bridges that form a recess between a bar of the bridge and an upper surface of the lower plate. The lower staple plate has two shearing lines corresponding to the recess of the bridge, and inlet and outlet toboggans that each have a curved tab. The toboggans are symmetrical with respect to the longitudinal axis of the bridge. Each toboggan has a boss that has an upper round portion and base rounded portions. A portion of the boss is connected to a portion of the tap. Each inlet toboggan-boss is situated in vertical alignment with a corresponding hole of the upper plate for the passage of the clip claws.

Abstract: Tooling intended for fixing hooks connecting the ends of belt conveyors including a fixed lower part forming an anvil linked to a movable upper part by positioning and centering fingers, a main punch, and a complementary punch. The main punch includes a head provided with enlarged parts and can slide in a vertical channel. The complementary punch can slide in a vertical channel. A vertical guiding groove staple is arranged on the side of the complementary punch. A pneumatic hammer provided with a head hammers the main punch which drives the staple in and drives, or hammers, the complementary punch which simultaneously hammers the upper of the hook.

Abstract: A conveyor belt joining staple including upper and lower staple plates situated at different levels joined by knuckles. The upper staple plate has through-holes for passage of staple attaching clip claws and the lower staple plate has bridges that form a recess between a bar of the bridge and an upper surface of the lower plate. The lower staple plate has two shearing lines corresponding to the recess of the bridge, and inlet and outlet toboggans that each have a curved tab. The toboggans are symmetrical with respect to the longitudinal axis of the bridge. Each toboggan has a boss that has an upper round portion and base rounded portions. A portion of the boss is connected to a portion of the tap. Each inlet toboggan-boss is situated in vertical alignment with a corresponding hole of the upper plate for the passage of the clip claws.

Abstract: A clip for attaching a staple that joins conveyor belt ends that comprises a top portion and a plurality of claws that extend substantially perpendicular from the top portion and are adapted to extend through corresponding holes in the staple. The top portion is formed of a metal sheet, the configuration of which corresponds to that of an accommodation recess provided in a top plate of the staple. The top portion bears at least two claws of the plurality of claws. Each of the claws is connected to the top portion by a bend and each bend includes a re-entrant reinforcing rib embossed therein. Each reinforcing rib is provided in the longitudinal direction of the respective claw approximately in the middle of the width of the respective claw. The claws are formed either by bending the metal sheet at the bends or by attaching the claws to the metal sheet.

Abstract: The proposed device comprises chain links alternately connected to upper fastening plates and to lower fastening plates. These plates comprise fastening claws of which some are arranged on the front and/or rear edges of the plates and others inside the surface of the plates. Stops are provided for blocking the chain links along the edge of the end of a conveyor belt. Another series of similar chain links are placed against the other end of the conveyor belt. The two series of chain links and plates are braced against the upper and lower sides of the respective conveyor belt ends, the claws fastening them to these ends. A connecting rod is then fitted into the chain links of the two pre-interleaved series, bringing together the conveyor belt ends in the process.