A welding head includes a first welding head part having a first welding end adapted to contact a welded member, and a second welding head part having a second welding end adapted to contact the welded member. The first welding head part and the second welding head part are arranged side by side in a horizontal direction and are movable relative to each other in a vertical direction. The first and second welding head parts are sized and oriented such that, when welding the welded member, a bottom surface of one of the first welding end or the second welding end abuts a top side of the welded member, and a side surface of the other of the first welding end or the second welding end abuts one side of the welded member.

A method for continuously applying buildup material to an oil and gas tubular using low heat input welding without compromising the mechanical properties of the tubular. The method includes preparation of the surface of the oil and gas tubular and applying a consumable wire to the surface. The consumable wire may be a buildup material with a hardness that is similar to the hardness of the oil and gas tubular. The method may include removal of a defect prior to restoring wall thickness to the tubular. The method may include restoring the tubular so that a surface feature, such as taper, may be recut in a different location.

A method for continuously applying buildup material to an oil and gas tubular using low heat input welding without compromising the mechanical properties of the tubular. The method includes preparation of the surface of the oil and gas tubular and applying a consumable wire to the surface. The consumable wire may be a buildup material with a hardness that is similar to the hardness of the oil and gas tubular. The method may include removal of a defect prior to restoring wall thickness to the tubular. The method may include restoring the tubular so that a surface feature, such as taper, may be recut in a different location.

Apparatuses and methods are provided for manufacturing bearing assemblies. In accordance with one embodiment, a fixture is provided for use in brazing bearing elements to a bearing ring. The fixture comprises a substantially annular body and at least one or more force-applying mechanism associated with the annular body. The force applying mechanisms include a push rod disposed within a channel that is formed in the annular body, the push rod being displaceable within the channel. A biasing member is configured to bias the push rod in a radial direction relative to the annular body. In one embodiment, a plurality of force-applying mechanisms are circumferentially spaced about the substantially annular body. In one embodiment, the push rods extend radially inwardly from a peripheral surface of the body, while in another embodiment the push rods extend radially outwardly from peripheral surface of the body.

A system and method for joining structures includes a method of joining a first panel to a second panel. A first workpiece formed of a first material is positioned adjacent a second workpiece formed of a second material and joined with a joining process. At least one welding insert is formed from the joined first and second workpieces having an upper portion formed of the first material and a lower portion formed of the second material. The at least one welding insert is positioned between a first panel formed of the first material and a second panel formed of the second material and placed between first and second electrodes of a welding device. First and second electrodes of the welding device generate an electric current to join the first panel, at least one welding insert, and the second panel.

A micro-optics assembly and a method for assembling the micro-optics assembly are provided. The micro-optics assembly may include an optical bench having an opening, a cylindrical body disposed in the opening and having a solder well, a heating element thermally coupled to the solder well, and an optical element. The optical element may include a frame having a post and a micro-optic mounted in the frame. The post may be secured in a solid solder material disposed within the solder well in the cylindrical body. The solder may be reflowable such that the micro-optics assembly is reconfigurable without the need for optical realignment components permanently mounted to the optical bench.

A light emitting diode (LED) tube lamp configured to receive an external driving signal includes an LED module for emitting light, the LED module comprising an LED unit comprising an LED; a rectifying circuit for rectifying the external driving signal to produce a rectified signal, the rectifying circuit having a first output terminal and a second output terminal for outputting the rectified signal; a filtering circuit connected to the LED module, and configured to provide a filtered signal for the LED unit; and a protection circuit for providing protection for the LED tube lamp. The protection circuit includes a voltage divider comprising two elements connected in series between the first and second output terminals of the rectifying circuit, for producing a signal at a connection node between the two elements; and a control circuit coupled to the connection node between the two elements, for receiving, and detecting a state of, the signal at the connection node. The control circuit includes or is coupled to a switching circuit coupled to the rectifying circuit, and the switching circuit is configured to be triggered on or off by the detected state, upon the external driving signal being input to the LED tube lamp, to allow discontinuous current to flow through the LED unit.

A light emitting diode (LED) tube lamp configured to receive an external driving signal includes an LED module for emitting light, the LED module comprising an LED unit comprising an LED; a rectifying circuit for rectifying the external driving signal to produce a rectified signal, the rectifying circuit having a first output terminal and a second output terminal for outputting the rectified signal; a filtering circuit connected to the LED module, and configured to provide a filtered signal for the LED unit; and a protection circuit for providing protection for the LED tube lamp. The protection circuit includes a voltage divider comprising two elements connected in series between the first and second output terminals of the rectifying circuit, for producing a signal at a connection node between the two elements; and a control circuit coupled to the connection node between the two elements, for receiving, and detecting a state of, the signal at the connection node. The control circuit includes or is coupled to a switching circuit coupled to the rectifying circuit, and the switching circuit is configured to be triggered on or off by the detected state, upon the external driving signal being input to the LED tube lamp, to allow discontinuous current to flow through the LED unit.

The present invention relates to a release system (1, 2, 3, 4, 5), that includes a segmented structural element (10) comprising: a first segment (10a) designed to be coupled to a first structure, a second segment (10b) designed to be coupled to a second structure, and a solder joint (11) joining respective ends of said first (10a) and second (10b) segments, thus holding down the first and second structures with respect to one another; wherein said solder joint (11) is electromagnetically heatable and includes a solder alloy having a predefined melting temperature. The release system (1, 2, 3, 4, 5) is characterized by further including magnetic field generating means (13, PW1, PW2, PW3, PW4, PW5) configured to, upon reception of a release command, generate a time-varying magnetic field through the solder joint (11) such that to cause heating thereof up to the predefined melting temperature of the solder alloy, thereby causing melting of said solder alloy; whereby separation of the first (10a) and second (10b) segments is caused, thus enabling release of the first and second structures from one another.

An LED tube lamp comprises a plurality of LED light sources, an end cap, a power supply disposed in the end cap, a lamp tube, and an LED light strip. The lamp tube extends in a first direction along a length of the lamp tube, and has an end attached to the end cap. The LED light strip is electrically connected the LED light sources with the power supply. The LED light strip has in sequence a first wiring layer, a dielectric layer and a second wiring layer. A thickness of the second wiring layer is greater than a thickness of the first wiring layer.