Load-carrying apparatus, assemblies, and subterranean drilling systems may include a support ring with a plurality of contact elements coupled to the support ring. The plurality of contact elements may have a surface exhibiting a partially cylindrical shape.

A transmission device, particularly for an engine with variable compression rate and/or variable displacement, includes, in a cylinder housing: a combustion piston capable of moving in a combustion cylinder of the engine and secured to a transmission member; a gear engaging with a first rack of the transmission member and providing transmission of the movement between the combustion piston and a crankshaft of the engine; a connecting rod engaging, at a first end, with the gear and, at a second end, with the crankshaft; and a control member engaging with the gear and secured to a control piston. The combustion piston and the transmission member are slidably linked with the cylinder housing in a main direction.

A bearing assembly includes a housing, a spherical bearing located within the housing, and two outer races positioned between the spherical bearing and the housing. The outer races are configured in sliding engagement with the spherical bearing to allow the spherical bearing to rotate relative to the housing. The assembly also includes a tightening element configured to engage a first of the two outer races and tighten the outer races against the spherical bearing. The assembly is configured to provide a primary load path from the tightening element to the housing, wherein the primary load path leads from the tightening element to the housing via the outer races whilst bypassing the spherical bearing.

Methods of manufacturing a radial sliding bearing may include coupling superhard contact elements to support rings where each superhard contact element includes a superhard contact surface and forming at least some of the superhard contact surfaces to comprise an arcute or a planar surface.

Methods of manufacturing a radial sliding bearing may include coupling superhard contact elements to support rings where each superhard contact element includes a superhard contact surface and forming at least some of the superhard contact surfaces to comprise an arcute or a planar surface.

An aircraft landing gear includes a landing gear provided with a yoke supporting a spindle on which is mounted a capture pin to be hooked by a hook of a locking box to be mounted on a structure of an aircraft to immobilize the landing gear in a given position with respect to the structure. The capture pin includes a body provided with a longitudinal opening enabling the capture pin to be mounted on the spindle, and an outer surface of revolution having a central portion having a convex profile to cooperate with the hook. A central portion of the outer surface is formed on a central ring which is mounted so as to rotate freely on a central portion of the body.

A bearing assembly of a hinge coupling first and second components includes an outer ring secured to the second component having an axial primary bore with a primary inner surface. An inner ring axially rotates, and has a primary outer surface rollingly contacting the primary inner surface, defining a primary sliding path with a primary friction coefficient. The inner ring includes a secondary axial bore with a secondary inner surface. An inner shaft in the secondary bore is secured to the first component and is axially rotatable. The inner shaft has a secondary outer surface rollingly contacting the secondary inner surface defining a secondary sliding path with a second friction coefficient. One of the sliding paths has a triboelectric layer surface frictionally generating an electrical current when that sliding path is engaged. A transmission element transmits, to a failure detection system, a signal due to such electrical current.

A bearing assembly of a hinge coupling first and second components includes an outer ring secured to the second component having an axial primary bore with a primary inner surface. An inner ring axially rotates, and has a primary outer surface rollingly contacting the primary inner surface, defining a primary sliding path with a primary friction coefficient. The inner ring includes a secondary axial bore with a secondary inner surface. An inner shaft in the secondary bore is secured to the first component and is axially rotatable. The inner shaft has a secondary outer surface rollingly contacting the secondary inner surface defining a secondary sliding path with a second friction coefficient. One of the sliding paths has a triboelectric layer surface frictionally generating an electrical current when that sliding path is engaged. A transmission element transmits, to a failure detection system, a signal due to such electrical current.

A forced induction device (100) includes: a rotor (1) which includes a turbine side shaft portion (11), a compressor side shaft portion (12), and a connection shaft portion (13) connecting these to each other; a turbine side bearing (5) which supports the turbine side shaft portion (11); and a compressor side bearing (6) which supports the compressor side shaft portion (12). A rigidity of the connection shaft portion (13) is lower than that of the turbine side shaft portion (11) and the compressor side shaft portion (12) so that a node in a mode shape at each critical speed involving with an operating rotational speed region of the rotor (1) is located between the turbine side bearing (5) and the compressor side bearing (6).

A bearing assembly of a power generation structure including, a rail; and a housing adapted to support the rail; where the housing includes a fixed housing portion attached to a support beam, and an adjustable housing portion attached to rail, where a low friction material is present at an interface between an exterior surface of rail and an interior surface of the adjustable housing portion, where the adjustable housing portion is capable of self-aligning adjustment of at least a portion of the rail out of alignment with a central axis of the support beam.