Abstract: A golf swing training device is provided herein. A ball is connected to a line wound about a reel, and one or more weights are slidably positioned upon the line. When the ball is struck, its inertia strips line from the reel, and the line trails behind the ball in flight. Simultaneously, the weights are carried along by the line, and these weights exert a downward force on the line, thereby dampening the flight of the struck bail and forcing the ball back toward the ground. Also, when the ball's trajectory curves upward, the friction between the weight and the line increases, thus decelerating the ball. After the ball strikes the ground, the ball can be retrieved by manually rotating the reel in the preferred embodiment.

Abstract: A reconfigurable serial loop or ring communication system is provided with a method and apparatus which enables stations on the loop to ascertain the address of its nearest active upstream neighbor (NAUN). A Ring Poll Frame is generated and broadcast from an originating station. The Ring Poll Frame includes a Ring Poll command, a From Address and a reset Address Recognized (AR) control bit. The first active downstream station recognizes the command with the control bit in the reset state, copies the contents of the ring poll frame and sets the bit. The set bit inhibits subsequent downstream stations from copying the frame. The first active station then generates a substantially similar formatted ring poll frame and passes it downstream. The process is continued by downstream active stations until the originating station receives a ring poll frame having a reset control bit. The reset control bit is an indication that all stations on the loop know the address of its NAUN.