This application provides a rotating shaft apparatus and a foldable-screen device. The rotating shaft apparatus includes a first primary support member, a second primary support member, a first secondary support member, and a lubrication structure. The first primary support member has a first support surface, the second primary support member has a second support surface, and the second primary support member can rotate relative to the first primary support member between an unfolded location and a folded location. The first secondary support member includes a first connection part and a first cantilever part, the first connection part is located on a side facing the second support surface and is connected to the second primary support member, the first cantilever part includes a first cantilever segment, and the first cantilever segment is located on a side facing the first support surface.

A manifold system that includes a gas cylinder assembly that includes an outer tube and a cylinder sleeve, and wherein atomized non-solid lubricant that flows into the cylinder sleeve of the gas cylinder assembly is used to at least partially or fully lubricate an inner surface of an interior chamber of the cylinder sleeve during the operation of the gas cylinder assembly.

A manifold system that includes a gas cylinder assembly that includes an outer tube and a cylinder sleeve, and wherein atomized non-solid lubricant that flows into the cylinder sleeve of the gas cylinder assembly is used to at least partially or fully lubricate an inner surface of an interior chamber of the cylinder sleeve during the operation of the gas cylinder assembly.

The present disclosure provides a lubricating system for a dual splined hollow shaft. A fluid dam is formed circumferentially within the hollow shaft to control the lubrication of the dual splines. The fluid dam includes a pair of sidewalls extending radially inward from the inner wall of the hollow shaft to a height defined by a top wall. A channel formed through the pair of sidewalls permits the movement of lubricant between splines of the hollow shaft. An egress port extends from the top wall of the dam through the outer wall of the hollow shaft to permit lubricant to exit the hollow shaft.

Improved fluid supply grooves in the face of an axial thrust bearing for a crankshaft are disclosed. The grooves have a larger cross-sectional area at the outer radius of the bearing body than at the inner radius of the bearing body.

Apparatus and method for supplying lubricant to a plurality of lubrication sites. The apparatus includes a controller that diagnoses piston wear by driving the pump to achieve a predetermined pressure, stopping the pump with the piston in a home position, and measuring pressure at a preselected time interval after the step of stopping the pump. The amount of piston wear is approximated based on a difference between the predetermined pressure and the measured pressure at the predetermined time interval.

Apparatus and method for supplying lubricant to a plurality of lubrication sites. The apparatus includes a controller that diagnoses piston wear by driving the pump to achieve a predetermined pressure, stopping the pump with the piston in a home position, and measuring pressure at a preselected time interval after the step of stopping the pump. The amount of piston wear is approximated based on a difference between the predetermined pressure and the measured pressure at the predetermined time interval.

A system for bearing lubrication comprises a bearing; a temperature sensor; a pressure sensor; a lubricant reservoir; a bearing lubrication comprising a pump; a lubricant drainage line; an exhaust fan; and a bearing lubrication controller communicatively coupled to the temperature sensor, the pressure sensor, the pump, and the exhaust fan, wherein the bearing lubrication controller is programmed to execute bearing temperature control logic comprising detecting the temperature from the temperature sensor, determining whether the temperature falls outside an upper pre-defined bound of the temperature, increasing the rate of a lubricant supplied from the pump to the bearing, detecting the fluid pressure from the pressure sensor, determining whether the fluid pressure falls outside an upper pre-defined bound of the fluid pressure within the bearing, and increasing the speed of the exhaust fan to increase a pressure differential along the lubricant drainage line from the bearing to the lubricant reservoir.

A system for bearing lubrication comprises a bearing; a temperature sensor; a pressure sensor; a lubricant reservoir; a bearing lubrication comprising a pump; a lubricant drainage line; an exhaust fan; and a bearing lubrication controller communicatively coupled to the temperature sensor, the pressure sensor, the pump, and the exhaust fan, wherein the bearing lubrication controller is programmed to execute bearing temperature control logic comprising detecting the temperature from the temperature sensor, determining whether the temperature falls outside an upper pre-defined bound of the temperature, increasing the rate of a lubricant supplied from the pump to the bearing, detecting the fluid pressure from the pressure sensor, determining whether the fluid pressure falls outside an upper pre-defined bound of the fluid pressure within the bearing, and increasing the speed of the exhaust fan to increase a pressure differential along the lubricant drainage line from the bearing to the lubricant reservoir.

A system for bearing lubrication comprises a bearing; a temperature sensor; a pressure sensor; a lubricant reservoir; a bearing lubrication comprising a pump; a lubricant drainage line; an exhaust fan; and a bearing lubrication controller communicatively coupled to the temperature sensor, the pressure sensor, the pump, and the exhaust fan, wherein the bearing lubrication controller is programmed to execute bearing temperature control logic comprising detecting the temperature from the temperature sensor, determining whether the temperature falls outside an upper pre-defined bound of the temperature, increasing the rate of a lubricant supplied from the pump to the bearing, detecting the fluid pressure from the pressure sensor, determining whether the fluid pressure falls outside an upper pre-defined bound of the fluid pressure within the bearing, and increasing the speed of the exhaust fan to increase a pressure differential along the lubricant drainage line from the bearing to the lubricant reservoir.