Abstract: A work clamp for clamping a workpiece to a work table with a clamp member which extends and retracts to and from clamping position with a compound motion having components parallel to and normal to the table in a manner such that extensile movement of the member occurs both parallel to the table to a position over the workpiece and toward the table to clamp the workpiece against the table, and retractile movement of the member occurs both away from the table to release the workpiece and parallel to the table to clear the workpiece for removal from and placement on the table.

Abstract: Oral compositions, such as toothpaste, mouthwash, and the like, containing certain anticalculus agents, and a specific anticaries agent which provides anticaries benefits while avoiding adverse effects on silicate filling materials present in the mouth.

Abstract: A throwing device made of a light weight, resilient foam material, such as urethane, having a generally hemispheroidal shape with a rounded base. The throwing device has an outer surface formed of major and minor surfaces which have a common axis of symmetry and are convex relative to a plane perpendicular to the common axis. The major and minor sub-surfaces each have an extremal point along the axis with the major sub-surface point being farther from the plane than the minor sub-surface point. The major sub-surface is a segment of a substantially spherical segment.