Abstract: A ball assembly for a swing trainer that withstands repeated hits with forces applied by professional athletes. The ball assembly comprises a ball, a wire rope, a ball stud swaged to one end of the wire rope and a connector sleeve swaged to the other end of the wire rope. A whole is drilled through the exact center of the ball and wire threaded therethrough. After the ball stud and connector sleeves are swaged to the ends of the wire rope, the ball stud is pressed into the hole in the ball. The wire rope may be coated to extend life.

Abstract: An improved crossbow and improved bow and methods for shooting an arrow from such crossbow and how devices. The improved how comprises a pressure sensitive adhesive (PSA) tape on the rail or arrow rest, the surface the arrow slides over when released. The PSA tape provides a smooth surface for the arrow to glide over thereby reducing friction. This is an improved over prior art products such as rail lube or silicone products. The disclosure also comprises an improved method for shooting an arrow with a crossbow comprising PSA tape on the rail or arrow rest.

Abstract: A swing training device for baseball, softball, golf players, and potentially racquet sports players that provides feedback as to where the ball is hit. The swing training device comprises a first vertical member rigid and columnar in form connecting to a first horizontal member, being rod-like in form, at a first end. A second end of the first horizontal member comprises a ball-shaped end connecting with a swivel joint to a second vertical member. The swivel ball joint connection allows the second vertical member to rotate at an angle such that the player knows whether their hit contacted the ball in the center, or to the left or right of center, thereby allowing the player to make adjustments in their swing based on angle of rotation of the ball around the first horizontal member.

Abstract: A swing training device for baseball, softball, golf players, and potentially racquet sports players that provides feedback as to where the ball is hit. The swing training device comprises a first vertical member rigid and columnar in form connecting to a first horizontal member, being rod-like in form, at a first end. A second end of the first horizontal member comprises a ball-shaped end connecting with a swivel joint to a second vertical member. The swivel ball joint connection allows the second vertical member to rotate at an angle such that the player knows whether their hit contacted the ball in the center, or to the left or right of center, thereby allowing the player to make adjustments in their swing based on angle of rotation of the ball around the first horizontal member.

Abstract: The invention provides improved methods for generating biodegradable chitosan compositions, and therapeutic methods of using such compositions to deliver therapeutic agents.

Abstract: The invention provides improved methods for generating biodegradable chitosan compositions, and therapeutic methods of using such compositions to deliver therapeutic agents.