Abstract: A downhole tool for use in a downhole drill string is provided. The downhole tool includes a rotor movably coupled within a stator, and a drive shaft movably coupled within a bearing housing. The drive shaft has a first end coupled with the rotor and a second end coupled with a drill bit. Bearing assemblies interfaces engagement between the drive shaft and the bearing housing, including polycrystalline diamond elements, each with an engagement surface, and an opposing engagement surface of a non-superhard metal.

Abstract: A roller ball assembly is provided. The assembly includes a primary roller ball supported by a support element that is composed of a superhard material. The assembly includes a cup defining a cavity within which the support element is positioned. A cap is coupled with the cup and positioned to retain the primary roller ball within the cavity. Also, a cup is disclosed for supporting roller halls. Additionally, disclosed are system and apparatus incorporating the assembly, as well as to methods of making and using the same.

Abstract: An application launching user interface that includes a plurality of application icons for launching corresponding applications is displayed. A first touch input is detected on a first application icon of the plurality of application icons. The first application icon is for launching a first application that is associated with one or more corresponding quick actions. If the first touch input meets one or more application-launch criteria which require that the first touch input has ended without having met a first input threshold, the first application is launched in response to the first touch input. If the first touch input meets one or more quick-action-display criteria which require that the first touch input meets the first input threshold, one or more quick action objects associated with the first application are concurrently displayed along with the first application icon without launching the first application, in response to the first touch input.