A method for preloading a bearing includes releasably, threadably, and directly attaching an attaching member to a circumferential outside surface of an exposed end of a threaded shaft of an axle or spindle. A frame is axially separated from, and coupled to, the attaching member. A plurality of extensions extends from the frame axially past the attaching member toward the wheel hub assembly. An adjustment mechanism moves the frame and the plurality of extensions axially towards the wheel hub assembly to contact the wheel hub assembly and/or the bearing to apply a preload to the bearing within the wheel hub assembly.

Disclosed herein is an anti-loosening fastener for fuel cell stacks, which is capable of maintaining performance of a fuel cell stack and prolonging a life of a fuel cell by preventing the fastener for coupling unit cells of the fuel cell stack from loosening due to vibration generated during driving.

A fixing device has two threaded rings (10, 12), and aa membrane (14) held between them that is an integral part of this pair of rings (10, 12) and is kept at a distance from the rings (10, 12) by introduced slots (16, 18, 24, 26), rectilinear in a unmounted state. The slots open to the outside. By resting against only partially annularly extending webs (20, 22) and having a clamping bolt (30) usable to adjust the axial distance between the and passing through the membrane (14) between two adjacent webs (20, 22), in the unmounted state the membrane is oriented in an undeformed manner in parallel to the rings (10, 12) and in a mounted state it is moved between the webs (20, 22) in a deformed state in the direction of at least one of the rings to at least partially form a slanted or arc course, as soon as the distance (a) between a pair (10, 12) of rings (10, 12) is reduced by the clamping bolt. The clamping bolt (30) passes through adjacent slots (16, 18, 24, 26) separated from the membrane (14).

The present disclosure provides a structural fastener includes a threaded rod coupler. The threaded rod coupler includes a split nut for coupling to the threaded rod. The threaded rod coupler further includes a housing connected to the structure coupler. The split nut may be received in the housing. The threaded rod coupler further includes first and second springs each coupled to and biasing corresponding one of first and second nut portions of the split nut toward one another. The present disclosure further provides a method of attaching a threaded rod to a structural component using a structural fastener. The method includes coupling a structural fastener to the structural component, sliding the threaded rod through a split nut of the structural component couple the rod to the structural fastener, and receiving springs secured in a nut arm of the split nut within a housing of the structural fastener.

A manufacturing process includes drilling a hole through a polyhedron; cutting a first surface from an outer surface of the polyhedron to the hole and subsequently clockwise cutting the outer surface of the polyhedron until the cutting meets a bottom edge of the first surface to form first and second nuts; rotating the first nut with about the second nut along the spiral cut surface to separate the first nut from the second nut, thereby forming a second surface, increasing height of the polyhedron, and forming a gap from the first surface to the second surface between the first nut and the second nut; fastening the first and second nuts together by spot welding; and disposing a sleeve on the polyhedron and driving a tap through the axial hole to create female threads in the first and second nuts respectively. An eccentric, internally threaded fastener is finished.

A locking ring includes a center portion that forms a center tab extending radially away from a center axis. The locking ring also has a pair of legs that extends away from the center portion in opposite azimuthal directions about the center axis. The center tab fits into a radially-inward-facing annular groove of a lock nut. Each leg has a tab portion that includes one or more radially outward tabs that fit into the annular groove of the lock nut and a locking portion with radially outward teeth that interlock with radially inward teeth of the lock nut. Each radially outward tab forms a chamfered edge that, when the locking ring is inserted into the lock nut, slides against a chamfered edge of the lock nut to engage with the annular groove of the lock nut.

A locking ring includes a center portion that forms a center tab extending radially away from a center axis. The locking ring also has a pair of legs that extends away from the center portion in opposite azimuthal directions about the center axis. The center tab fits into a radially-inward-facing annular groove of a lock nut. Each leg has a tab portion that includes one or more radially outward tabs that fit into the annular groove of the lock nut and a locking portion with radially outward teeth that interlock with radially inward teeth of the lock nut. Each radially outward tab forms a chamfered edge that, when the locking ring is inserted into the lock nut, slides against a chamfered edge of the lock nut to engage with the annular groove of the lock nut.

An apparatus for providing a load on a bearing mounted to a shaft includes an attaching member releasably connectable to the shaft. A press mechanism is coupled to the attaching member and is configured to provide a compressive load to the bearing. An optical sending unit is configured to output a high intensity light to allow a user to locate a shaft slot of the shaft to align the press mechanism relative to the shaft when the attaching member connects to the shaft.

An apparatus for providing a load on a bearing mounted to a shaft includes an attaching member releasably connectable to the shaft. A press mechanism is coupled to the attaching member and is configured to provide a compressive load to the bearing. An optical sending unit is configured to output a high intensity light to allow a user to locate a shaft slot of the shaft to align the press mechanism relative to the shaft when the attaching member connects to the shaft.

A combination nut assembly includes first and second tightening nuts, each engageable with a bolt and having an interior frustum-shaped fitting socket and a dual frustoconical locking nut engageable with the bolt and elastically deformable and consists of two exterior frustum-shaped half locking nut members identical in geometric configuration and symmetrically inverted in position integrally connected together as a single part with their larger ends jointly connected and located between the first and second tightening nuts when assembled. Each half locking nut member protrudes an axial distance “e” from a bearing surface of the tightening nut in an assembled position. Axial distance “e” is defined by p>e≥α/tan θ, where: “θ” is cone generating angle; “α” is perpendicular backlash between flanks of threads of the bolt and locking nut in an ordinarily engaged position; and “p” is locking nut pitch.