A core chuck comprising an interior member having a longitudinal axis and n exterior camming surfaces, n jaws each having an interior camming surface, and 2n rollers radially intermediate the jaws and the interior member. Each of the rollers engages a camming surface defined either by the interior member or by a jaw, each camming surface is convex relative to the axis, and a roller cage maintains the circumferential spacing of the rollers.

A core box having a core pattern and a self-contained mechanism for physically contacting a core, disposed within the pattern, and forcibly ejecting it from the pattern. The mechanism comprises a plurality of ejector pins which are movable into contact with the core by an inflatable bag disposed in the core box.

A core supporting device has mounting means for core locking elements, preferably roller members, which allow unrestrained radial movement of the locking elements during constrained circumferential movement thereof. The mounting means is preferably a sleeve having apertures through which the locking elements protrude.

A core chuck is disclosed which employs a set of expandable jaw sections. The jaw sections are expandable by operation of an adjusting pinion to which the jaw sections are connected by means of a keyway element. The chuck may be attached to a shaft or bearing stand by means of an adaptor plate.

Apparatus for releasably securing or chucking a workpiece such as a roll of web material includes a rotatable member having a slot defined therein, with a rigid member or chuck blade pivotally mounted in the slot. Rotation of the workpiece in relation to the spindle pivots the rigid member and extends it so that the workpiece is wedged across the spindle and the rigid member.

A tool for insertion into a core including a pair of pivotally connected levers having forwardly-extending jaws for insertion into the core and rearwardly-extending actuating portions to which the opposite ends of a flexible-wall fluid actuator are fixed for applying force to the actuating arms and pivotally expanding the jaws.

Improved core drills and core drill elements. The core drill is of the type having a carrying drill tube and at least one cutting element attached to one end of drill tube. In the present invention, structural means are provided on one end surface of the cutting element extending over the entire length of the end surface to receive all or a portion of the one end of the drill tube to strengthen the core drill. The invention is also directed toward a method for making the improved core drill and ...

A transformer or inductor core of magnetic material has three legs (6, 8, 10) interconnected by yokes. The core comprises loops (12, 14, 16) of wires and/or strips of magnetic material, wherein each of the loops makes up part of two of the legs. Loops making up part of two different leg portions are interleaved in a common leg portion. This provides for mechanical stability and good magnetic properties for the core.

This invention relates to a combination drug product comprising pioglitazone hydrochloride and a biguamide, e.g. metformin. In particular, the product comprises a core of the biguamide, e.g. metformin, at least a portion thereof has a layer or coat thereon of pioglitazone.

A segmented core includes a plurality of integral core segments defined by a respective separation slot in the outer surface thereof. A sheet is wound around the core in a plurality of layers and is slit at the slot to simultaneously wind respective sheet ribbons on the core segments to form individual rolls. The sheet slit is aligned with the core slot which allows the wound rolls to be broken apart at the slots.