This document provides a computer-implemented method that includes placing an athletic ball containing a battery on an inductive charging device; generating an electric or magnetic field, or both with the inductive charging device; receiving energy from the field or fields via a receptor located inside the athletic ball; and charging a battery inside the athletic ball using the received energy. This document also provides devices and methods for detecting events with an instrumented player-controllable game device, such as an event of a basketball or soccer ball passing through a goal.

This document provides a computer-implemented method that includes placing an athletic ball containing a battery on an inductive charging device; generating an electric or magnetic field, or both with the inductive charging device; receiving energy from the field or fields via a receptor located inside the athletic ball; and charging a battery inside the athletic ball using the received energy. This document also provides devices and methods for detecting events with an instrumented player-controllable game device, such as an event of a basketball or soccer ball passing through a goal.

This document provides a computer-implemented method that includes placing an athletic ball containing a battery on an inductive charging device; generating an electric or magnetic field, or both with the inductive charging device; receiving energy from the field or fields via a receptor located inside the athletic ball; and charging a battery inside the athletic ball using the received energy. This document also provides devices and methods for detecting events with an instrumented player-controllable game device, such as an event of a basketball or soccer ball passing through a goal.

This document provides a computer-implemented method that includes placing an athletic ball containing a battery on an inductive charging device; generating an electric or magnetic field, or both with the inductive charging device; receiving energy from the field or fields via a receptor located inside the athletic ball; and charging a battery inside the athletic ball using the received energy. This document also provides devices and methods for detecting events with an instrumented player-controllable game device, such as an event of a basketball or soccer ball passing through a goal.

A collapsible juggling club is disclosed herein. The collapsible juggling club can include an end portion, a plurality of intermediate portions, and a handle portion. The end portion defines a cavity and includes a first diameter. The handle portion includes a second diameter that is less than the first diameter of the end portion. The plurality of intermediate portions include descending diameters and are arranged telescopically between the end portion and the handle portion, such that the juggling club can telescopically transition between a collapsed condition, wherein each intermediate portion of the plurality is nested with the cavity defined by the end portion, and an extended condition, wherein the end portion, each intermediate portion of the plurality, and the handle portion are secured to an adjacent portion via a friction fit.

A collapsible juggling club is disclosed herein. The collapsible juggling club can include an end portion, a plurality of intermediate portions, and a handle portion. The end portion defines a cavity and includes a first diameter. The handle portion includes a second diameter that is less than the first diameter of the end portion. The plurality of intermediate portions include descending diameters and are arranged telescopically between the end portion and the handle portion, such that the juggling club can telescopically transition between a collapsed condition, wherein each intermediate portion of the plurality is nested with the cavity defined by the end portion, and an extended condition, wherein the end portion, each intermediate portion of the plurality, and the handle portion are secured to an adjacent portion via a friction fit.

This document provides a computer-implemented method that includes placing an athletic ball containing a battery on an inductive charging device; generating an electric or magnetic field, or both with the inductive charging device; receiving energy from the field or fields via a receptor located inside the athletic ball; and charging a battery inside the athletic ball using the received energy. This document also provides devices and methods for detecting events with an instrumented player-controllable game device, such as an event of a basketball or soccer ball passing through a goal.

This document provides a computer-implemented method that includes placing an athletic ball containing a battery on an inductive charging device; generating an electric or magnetic field, or both with the inductive charging device; receiving energy from the field or fields via a receptor located inside the athletic ball; and charging a battery inside the athletic ball using the received energy. This document also provides devices and methods for detecting events with an instrumented player-controllable game device, such as an event of a basketball or soccer ball passing through a goal.

An exercise apparatus for exercising muscles of a user comprising a main body, an abdominal crunch exercise member pivotally attached to the main body, the abdominal crunch member configured to engage an upper body area of a user, an abdominal contact member attached to the main body, the abdominal contact member configured to engage an abdominal area of user; and an electronic vibration unit capable of causing a portion of the apparatus to vibrate.

A hammer with an elongate handle having a longitudinal axis, a proximal end and a distal end; a protrusion mounted at the distal end of the handle having a pin and a notch therethrough oriented along a transverse axis relative to the longitudinal axis and a flexible generally geometrically uniform mass affixed to the handle at the distal end thereof. The mass is molded onto the distal end of the handle whereby at least part of the mass extends through and fully occupies a channel in the handle and cooperates with the pin to secure the mass to the handle.