Abstract: A game puck including an integrally-constructed core, core-circumscribing spring and spring-circumscribing shell. The core has a central throughbore in which a center weight may be received. The center weight has interchangeable logo surfaces. The spring is formed by a plurality of concentric folds. The shell has a plurality of throughbores radially diverged therein, each receiving a glide pin. The glide pins each have heads which protrude from each face of the puck. The invention provides a method for making the game pucks including providing a mold for forming a puck and injecting material therein via a centrally-disposed fan gate for discouraging angularly anisotropic properties and cold joint formation.

Abstract: A set of golf club irons having common swing weights segregated into distance irons, fairway irons and accuracy irons, each grouping having common shaft lengths and lie angles. Each club head is vertically, horizontally and laterally balanced about its sweet spot. The areas of the faces of each club are substantially identical.Each club face has multiple, generally parallel, horizontal, V-shaped scoring. The distance and fairway irons have scoring which promotes top spin in the ball. The accuracy irons have scoring which promotes back spin.

Abstract: An improvement to an in-line skate wheel assembly rotatably mounted to a mounting frame axle juxtaposed a skate boot which lends to firmer and less degrading tire support and facilitates ready adaptation of different kinds of tires to suit varying skating activities.

Abstract: A high penetration arrowhead with an adjustable alignment and weight screws onto the end of a hollow arrow shaft. The arrowhead has a hollow ferrule covered by a grooved resin sleeve. A point at the forward end of the ferrule presents an interior inclined surface at the forward end of each groove. A blade with an inclined cutting edge fits into each groove so that the cutting edge contacts the inclined surface pressing the blade into the bottom of the groove. A retaining ring at the rear end of the groove encircles tabs on the blades and drives the blades forward to hold the blades in place as the arrowhead is screwed onto the shaft. Deformable lands on the groove bottom allow the arrowhead's adjustable alignment to be adjusted while maintaining pressure on the blades. The point has a secondary facet directly in front of each cutting edge to enhance penetration and the ferrule has a narrowing cross section behind the point for the same reason.

Abstract: An arrow and its shaft wherein the shaft has a longitudinal axis extending between the arrowhead and the arrow nock. Flight feathers are disposed on the shaft near the nock to guide and rotate the arrow during flight. The shaft is hollow having longitudinally extended flutes to strengthen and stiffen the shaft. Strengthening and stiffening the shaft permits a smaller diameter shaft with a thinner wall thickness to be used to lighten the shaft and arrow without sacrificing the strength and stiffness of the arrow.

Abstract: A one-piece fence post is comprised of a rigid tubular member folded in a region between its ends to form first and second longitudinally abutting portions. A first pair of inwardly facing adjacent indentations are formed in the respective first and second portions in the region of the fold to define a transverse rail-receiving passage. One or more further pairs of inwardly facing adjacent indentations are formed in the respective first and second portions between the region and the ends of the member to define a corresponding one or more additional transverse rail-receiving passages. The first and second portions are joined together, as for example, by welding, preferably between each pair of rail-receiving passages. The posts are preferably made of metal, such as galvanized steel pipe, in which case they can be inexpensively fabricated by known metal-working techniques.