A stop device for a projectile is disclosed. An example stop device includes an inner shaft and an outer sleeve. The inner shaft is slidable into the outer sleeve in a closed position, and the inner shaft slidable out of the outer sleeve in an open position. The inner shaft remains connected to the outer sleeve in both the open position and the closed position. At least one spring-biased stop-blade is attached to the inner shaft. The at least one stop-blade manually folds into the inner shaft as the outer sleeve slides to the closed position over the inner shaft. The at least one stop-blade automatically expands out beyond an outer circumference of the outer sleeve under spring-bias as the outer sleeve slides to the open position when the projectile impacts a target. In an example, the stop device also includes a microchip for locating the projectile.

An apparatus for adding weight to an arrow and a system and method of correcting the trajectory of the arrow with the added weight is disclosed and described. The arrow can include a compensator designed to fit as a sleeve on a shaft of the arrow and the compensator has diameter that is larger than a diameter of the shaft of the arrow. A thickness of the compensator, which is measured as the difference in the diameter of the compensator and the diameter of the shaft of the arrow, is configured to enable a user to aim the arrow with a bow that has been sighted for a standard arrow.

An archery projectile locating facility comprises an elongated body. The elongated body includes a connection facility adapted to connect to the archery projectile. The elongated body includes a microcontroller. The elongated body includes a sensor facility in communication with the microcontroller and operable to detect a flight state. The elongated body includes a transmitter in communication with the microcontroller and operable to broadcast at least one data signal after the flight state has been detected. The at least one data signal includes information generated by the sensor facility.

An archery projectile facility comprises an elongated body. The elongated body includes at least one accelerometer. The at least one accelerometer is operable to generate three-dimensional acceleration information. The archery projectile facility comprises a body processor. The body processor is operably connected to the at least one accelerometer. The body processor is adapted to process the three-dimensional acceleration information to generate sampled information. The archery projectile facility comprises a transmitter. The transmitter is operably connected to the body processor to broadcast the sampled information. The archery projectile facility comprises a receiver. The receiver includes a receiver processor. The receiver processor is adapted to generate resulting information based on the sampled information. The resulting information is based on a determination of a stabilization point.

Disclosed is a dart game apparatus according to exemplary embodiments of the present disclosure. The dart game apparatus may include: a dart target capable of accommodating a thrown dart pin; a sensing unit sensing a hit location of a thrown dart pin; a controller determining score information depending on each of one or more dart pins thrown by a first player based on information on the hit location, which is received from the sensing unit, determining the determined respective score information of the first player to be output in response to throwing of the respective dart pins, permitting a second player to throw the dart pins when it is sensed that a round of the first player ends, determining the score information depending on each of one or more dart pins thrown by the second player, comparing the determined respective score information of the second player with current score information of the first player, and determining whether the current score information depending on throwing of the dart pins of the second player is output in association with comparison result information based on a result of the comparison; and an output unit outputting the score information depending on the throwing of the dart pins and the result information of the comparison according to the control by the controller.

A tracking system for locating arrows used in bow-and-arrow hunting is disclosed. The tracking system comprises a hand-held transmitter operated by a user and a receiving module embedded in an arrow. A user may locate an arrow after shooting my activating the transmitter to emit an RF signal. The receiving module in the arrow receives the RF signal and emits a sound or illuminates a LED. The transmitter may be configured to locate specific arrows of a quiver by sending an individualized RF signal to which only a specific arrow receiving module is responsive.

A projectile tracking with stop device is disclosed. An example projectile tracking with stop device includes an outer sleeve and an inner shaft, the outer sleeve having an interior chamber assembled over an exterior portion of the inner shaft, the outer sleeve and the inner shaft assembled for connecting to a projectile. The example projectile tracking with stop device also includes at least one stop-blade attached on a pin in the inner shaft. The at least one stop-blade folds into the inner shaft when the outer sleeve is in a closed position. The at least one stop-blade expands out beyond an outer circumference of the outer sleeve when the outer sleeve moves to an open position. In an example, the projectile tracking with stop device also includes a microchip positioned at least partly in a chamber of the inner shaft. The microchip emits a tracking signal for locating the projectile.

A high impact strength lighted nock assembly for an arrow that is activated when the arrow is fired with a bowstring. The lighted nock assembly includes a nock molded from a high impact strength, transparent polymeric material containing at least 10% by weight reinforcing fibers. The nock includes a head configured to engage with the bowstring and a shank configured to couple with a rear end of the arrow. The shank includes a recess extending in a distal end of the shank toward the head. A light assembly including a light emitting device is located in the recess in the shank that is electrically coupled to a battery. A switch is electrically coupled to the light emitting device and the battery that is triggered when the arrow is fired to activate the light emitting device.

A tracking system for tracking moving objects is provided. The system includes a position module configured to attach to an object that moves, the position module having a size that does not impede a purpose of the object that moves; and a tracking module that communicates with the position module and receives position information associated with the position module attached to the object that moves. Related position modules are also provided.

The disclosure provides a dartboard, a dart scoring device and a dart scoring method. The dartboard comprises a target board body; and a projection device disposed on the target board body and configured to project a target image around a periphery of the target board body to form a virtual target. The target board body according to the disclosure has a small size and is convenient to carry and use.