Abstract: A screen including a filtration media having a manufactured structure with an interface portion and a filtration portion, the filtration portion having a homogenous geometry that precisely balances flow through all flow paths through the media. A method for making a screen including determining a geometric shape of each flow path through a prospective filtration media, sequentially progressively building the media particle by particle ensuring the geometric shape of each flow path is within 0.01 mm of a design geometry, and fusing each build particle to the foregoing build particle. A borehole system, including a borehole in a subsurface formation, a string in the borehole, and a screen and or plurality of individually designed screens disposed or geometrically distributed within or as a part of the string.

Abstract: A gearcase seal assembly includes an inboard seal body and an outboard seal body both extending about and along a center axis between respective interior and exterior portions. The inboard and outboard seal bodies include respective inboard and outboard pockets configured to receive first and second surfaces of a gearcase of an axle assembly, respectively. The interior portions of the inboard and outboard seal bodies include respective gutters configured to direct fluid away from the first and second surfaces of the gearcase, respectively. The exterior portion of the inboard seal body includes plural fingers disposed outside of the inboard pocket and extending in one or more directions away from the inboard pocket. The exterior portion of the outboard seal body includes plural other fingers disposed outside of the outboard pocket and extending in one or more directions away from the outboard pocket.

Abstract: A positioning system for a pantograph includes a manifold. The manifold may have a monolithic body defined by layers of material that are stacked and fused together. The monolithic body may include a housing, a supply pipe, a pantograph pipe, and a valve pipe. The housing may define a chamber to hold a fluid. The supply pipe may project from the housing and be configured for connection to a fluid supply unit. The pantograph pipe may project from the housing and be configured for connection to an expansible device mechanically connected to the pantograph. The valve pipe may have an outlet end projecting from the housing and configured for connection to a main valve that is actuatable to control flow of the fluid through the manifold.

Abstract: A pantograph positioning system may include a contact strip, a main valve, a supply line, at least one feeder line, and a detection line. The contact strip may be fastened to a pantograph and equipped with a wear detection circuit supplied a fluid. The main valve may include a pilot chamber and a secondary chamber, which are separated by a membrane. The membrane may be movable between a closed position, in which the membrane blocks an outlet aperture of the secondary chamber, and an open position, in which the membrane does not block the outlet aperture, allowing evacuation of the fluid. The supply line may supply the fluid to the secondary chamber of the main valve. The at least one feeder line may feed the fluid to the pilot chamber. The detection line may extend from the pilot chamber to the wear detection circuit of the contact strip.

Abstract: A welding window device includes an elongated body that defines a welding cavity that extends through the body from a top side to a bottom side. The welding cavity is framed by an inlet end, an outlet end, and lateral sides of the body. The body includes one or more gas channels inwardly extending through one or more of the first lateral side or the second lateral side from an inlet opening in the inlet end toward the outlet end of the body. The gas channels include nozzle openings inwardly oriented toward the welding cavity. The gas channels are positioned in the body to direct a gas into the welding cavity during welding of other bodies together within the welding cavity.

Abstract: A gearcase seal assembly includes an inboard seal body and an outboard seal body both extending about and along a center axis between respective interior and exterior portions. The inboard and outboard seal bodies include respective inboard and outboard pockets configured to receive first and second surfaces of a gearcase of an axle assembly, respectively. The interior portions of the inboard and outboard seal bodies include respective gutters configured to direct fluid away from the first and second surfaces of the gearcase, respectively. The exterior portion of the inboard seal body includes plural fingers disposed outside of the inboard pocket and extending in one or more directions away from the inboard pocket. The exterior portion of the outboard seal body includes plural other fingers disposed outside of the outboard pocket and extending in one or more directions away from the outboard pocket.