Abstract: A portable electronic device including a first body, a second body, and a hinge mechanism is provided. The second body is connected to the first body through the hinge mechanism, and the hinge mechanism has a basis axis located at the first body and a rotation axis located at a lower end of the second body. When the second body rotates with respect to the first body, the rotation axis slides along an arc shaped path with respect to the basis axis to increase or decrease a distance between the rotation axis and the basis axis and increase or decrease a distance between the lower end of the second body and a back end of the first body.

Abstract: A preloading regulating mechanism for rolling bearings which is adapted to be used to adjust an axial force on the rolling bearings is disclosed. The preloading regulating mechanism includes a first fixing member, a regulator disposed in the first fixing member for allowing a user to apply a torque thereon, an annular plate having a first face connected to the regulator for being moved in response to the torque exerted from the regulator, a resilient member having a first end connected to a second face of the annular plate for urging against the annular plate to form an elastic force, and a movable annular element connected to a second end of the resilient member for transmitting the elastic force to form the axial force on the rolling bearing in response to the motion of the annular plate.

Abstract: An apparatus combining the tests of lubrication systems with performance of rolling bearings is disclosed. The functions include the regulation of axial load and lubrication system and measurement of temperature rise and friction torque of test bearing which are provided to analyze the performance of test bearing under different axial loads, rotating speed and lubrication conditions. The test apparatus consists of loading, testing, linking, power, and base sections. In the loading section, a disc spring can be compressed by an adjustable screw to make up a mechanism for changing axial load on the test bearing. The testing section includes a thermocouple and a mechanism for measurement of friction torque of bearing. The outside of testing section has a protective sleeve for setting holes and pads which are adapted to fix, change and regulate the position, number, and outlet displacement of lubricant nozzles according to different lubrication systems and the actual testing needs.

Abstract: A configuration of lubrication nozzle including a large flow path to connect external oil supply tube with semi-circle cross section annular flow path, and three jet flow conduits with L form having interval of 120.degree. between adjacent channels to link annular flow path and outlet is created for oil-air or oil-mist lubrication system for high speed rolling-element bearings.

Abstract: A measuring apparatus for measuring the draw-in force of a spindle of a machine tool includes a measuring mechanism and a displacement sensor for measuring displacement in a non-contact manner, without contacting the spindle. The draw-in force is converted into a displacement value. The apparatus may be used to measure the draw-in force of a rotating or a stationary spindle.

Abstract: The swirler for the fuel nozzle of the combustor of a gas turbine engine in engine designs where the swirler is off set from the center line of the combustor, localized erosion is obviated by locating and angling air cooling holes around the air swirler body to for flowing the cooling air uniformly along the body surface from bottom up to the tip of the swirler.