Abstract: The present invention is directed to an arrow having a hollow cylindrical shaft having a first end and a second end. An insert is positioned in the first end of the hollow shaft. The insert has an increased diameter section that defines a shoulder. A threaded connection extends from one side of the increased diameter section. An engagement section extends from the increased diameter section in a direction opposite to the threaded connection. The engagement section is configured to engage the interior surface of the hollow shaft to removably secure the insert to the hollow shaft. A hunting type of arrow head is secured to the threaded connection and arrowhead extends from the hollow shaft. At least one opening extends through the insert to place the interior of the hollow shaft in communication with the atmosphere.

Abstract: The present invention is directed to an arrow having a hollow cylindrical shaft having a first end and a second end. An insert is positioned in the first end of the hollow shaft. The insert has an increased diameter section that defines a shoulder. A threaded connection extends from one side of the increased diameter section. An engagement section extends from the increased diameter section in a direction opposite to the threaded connection. The engagement section is configured to engage the interior surface of the hollow shaft to removably secure the insert to the hollow shaft. A hunting type of arrow head is secured to the threaded connection and arrowhead extends from the hollow shaft. At least one opening extends through the insert to place the interior of the hollow shaft in communication with the atmosphere.

Abstract: An encapsulated electrical capacitor in which an end and a major portion of the cylindrical outer shell of the capacitor is positioned within a cup-shaped sleeve before an outer housing is molded around the capacitor and sleeve. The sleeve has axially extending internal ribs which stiffen its outer annular wall to thereby help to prevent damage to the capacitor from hydraulic forces during the encapsulating process. The internal ribs also define insulating air spaces between one another, and this helps to reduce thermal conduction into the capacitor during the molding process. The outer housing is preferably formed from polypropylene, and the sleeve is preferably formed from a material which will retain a major portion of its strength and rigidity at the molding temperature of the outer housing, for example, a polyester material when the outer housing is formed from polypropylene.

Abstract: An interlocking lens structure comprising two opposed lens pieces is disclosed. Each of the lens pieces has a top portion including an edge having a first region formed with a groove and a second region formed with a projection. The first region of each of the lens pieces is adapted to mate with the second region of the other of the lens pieces. Each of the lens pieces further includes a side portion connected to the top portion and having two edges. One of the side portion edges is formed with a groove, while the other of the side portion edges is formed with a projection. The groove of each of the side portion edges is adapted to mate with the projection of the other of the side portion edges. The depth and the length of each of the groove/projection combinations can be varied to determine the amount of color separation between the lens pieces. The grooves and the projections also prevent light from escaping from the interior of the lens structure at the junction of the lens pieces.