Abstract: An arrowhead for use in a ballistic arrow having a radio locating transmitter comprises a composite structure of a dielectric shank having a plurality of electrically conductive blades that function as a counterpoise for a primary antenna of the transmitter. The blades are disposed symmetrically about a long axis of the shank in respective, uniformly spaced planes that extend radially outwardly from the outer surface of the shank. Another embodiment of the composite arrowhead comprises a unitary dielectric shank and blades wherein the counterpoise is formed by deposition of a thin metal layer on at least a portion of the shank and blade surfaces. The combination of the dielectric shank which is of low density and the electrically conductive counterpoise that is of small mass, effects an overall weight reduction in the arrow to achieve a flatter trajectory and increased flight range.

Abstract: A container lid is formed from a disc having thin walls of uniform thickness throughout which span and overlap the open end of the container. The overlapping portion includes a downwardly depending resilient skirt that partly overlies in engaging relation one surface of the sidewall adjacent the open end. Complementary engagement means are formed in the skirt for releasably engaging lid engagement means such as a continuous bead or groove that comprise an integral part of the container. A reclosable tear strip defines an opening through which the contents of the container may be discharged and forms an integral part of the disc and the skirt. The strip has sides defined by fracture lines formed in the disc, an outer end defined by the lines extending into the skirt to include the complementary engagement means and an inner end forming a hinge along a weakened line in the disc.