Abstract: A single serving beverage container has a body having a first end, which in the drinking vessel serving position is at the top, and an opposite second end that functions as the base of the container. Accessible from the first end is a closure that can be opened and the second end is closed. The body defines a two-chamber interior cavity of a first predetermined volume for containing a beverage and a second adjacent volume for increasing the total useable container volume after the closure has been opened and for providing a drinking rim optimized to enhance the drinking experience.

Abstract: In one embodiment, an apparatus for use in friction stir welding including a friction stir tool, having a shoulder, a non-consumable welding pin extending downward centrally from the shoulder, a first workpiece disposed on a backing workpiece, a second workpiece located a predetermined distance from the first workpiece on the backing workpiece, and a transition strip disposed on the backing workpiece between the first workpiece and the second workpiece, wherein the contact area or a space between the transition strip and the first workpiece defines a first interface and the contact area or a space between the transition strip and the second workpiece defines a second interface, wherein the non-consumable welding pin is rotated over the first interface and the second interface to weld the first workpiece to the second workpiece with the transition strip material incorporated as part of the weld, is disclosed.

Abstract: A preform element, for example for use as a cutting element on a rotary drag-type drill bit, includes a facing table of superhard material having a front face and a rear face bonded to the front face of a substrate which is less hard than the superhard material. The rear face of the facing table comprises a surface formed with a plurality of spaced protuberances and a plurality of spaced sockets, and the front face of the substrate comprises a surface which is bonded to the surface of the facing table and is formed with a plurality of spaced protuberances which are bonded within said sockets in the facing table, and a plurality of spaced sockets within which are bonded said protuberances on the facing table.

Abstract: A rotary drill bit comprises a bit body, a shank for connection to a drill string, a plurality of cutters mounted on the bit body, and a gauge structure which extends around the bit body and, in use, engages the surrounding formation forming the sides of the borehole being drilled. At least a section of the gauge structure is rotatably mounted on the bit body so that, in use, the gauge section may remain substantially non-rotating in engagement with the formation while the bit body rotates relative to it. The external surface of the non-rotating gauge section may be formed with longitudinal grooves to permit the flow of drilling fluid past the gauge section to the annulus. Alternatively the outer surface of the gauge section may be generally cylindrical, in which case internal passages are provided through the gauge section, and/or the bit body, for the flow of drilling fluid past the gauge section to the annulus.