A combination ball marker and alignment device has a base and an aiming device. The base has a top surface and an opposing bottom surface. The base further has a ball contact side, disposed on a sidewall between the top and bottom surfaces, having a shape configured to contact a spherical ball along a surface line of the ball that is orthogonally oriented with a vertical axis of the ball, and an opposing back side disposed between the top and bottom surfaces. The aiming device includes a linear indicator. The aiming device is coupled to the base and configured to move along an arcuate path above the top surface. The arcuate path defines an axis rotation, and the linear indicator remains radially oriented to the axis of rotation regardless of the position of the aiming device on the arcuate path.

A method can include providing an object having a size smaller than a size of a known regulation object, projecting the object, via a delivery device, toward a trainee, and training the trainee to follow the object. A method can include determining a game parameter of a game trajectory of a sports object that was projected along the game trajectory in a real-time sports event, and based on the game parameters, adapting a delivery device to deliver a training object along a training trajectory that mimics at least a portion of the game trajectory, with the training object being smaller than the sports object.

A golf ball alignment tool (100) for assisting a golfer in visually aligning a golf ball (200) with a golf hole (114), the tool comprising a support base (101) and an alignment indicator (102), wherein the alignment indicator (102) is mounted on the support base (101) and moveable relative thereto to allow adjustment of the alignment indicator (102) without movement of the support base (101).

A cue ball used for practice and play in pool or billiards. The cue ball is made with a plurality of concentric sphere layers or shells starting with a centermost opaque ball, followed by two or three spheres of differently colored semi-transparent polymer resins; then an outermost clear layer of polymer.

A golf aid system for assisting a user with a golf shot on a golf course includes a user tracking system configured to determine the location of the user on the golf course, a portable electronic device with a display screen, and a processor. The processor, which is operable to communicate with the user tracking system and the portable electronic device, is configured to determine one or more target locations on the golf course, with each of the target locations representing a recommended target for a respective one of the golf clubs. The processor directs the portable electronic device to display an indicator of the respective golf club proximate the corresponding target location via the display screen, such that the user perceives at least a portion of the indicator to be coincident with the corresponding one of the target locations.

A system for analyzing a putting motion includes: mat markers attached to a mat on which a ball is placed; a putter marker attached to a putter for applying an impact to the ball; a mat having a color contrasting with colors of the mat markers, the putter marker and the ball; a camera for photographing the mat markers, the ball, and the putter marker; a mat detection unit for detecting a position of the mat from an image photographed by the camera; an object detection unit for detecting positions of the putter and the ball in real time; a ball calculation unit for calculating a speed and a moving direction of the ball based on the detected ball; and a pointer calculation unit for calculating a pointer position for a menu selection function necessary for a simulator operation by using coordinates of the detected putter.

A golf aid system for assisting a user with a golf shot on a golf course includes a user tracking system configured to determine the location of the user on the golf course, a portable electronic device with a display screen, and a processor. The processor, which is operable to communicate with the user tracking system and the portable electronic device, is configured to determine one or more target locations on the golf course, with each of the target locations representing a recommended target for a respective one of the golf clubs. The processor directs the portable electronic device to display an indicator of the respective golf club proximate the corresponding target location via the display screen, such that the user perceives at least a portion of the indicator to be coincident with the corresponding one of the target locations.

The two-part system includes a modified hockey puck and a set of goal units that can be mounted on a hockey goal. Within the puck are light sources, motion sensors, infrared'transmitters, and a power source. Within the goal units are light sources, infrared sensors, and a microcontroller. When the goal units are mounted on the hockey goal, the infrared sensors form a detection area through which the puck must pass in order to count as a goal. The infrared transmitter of the puck and the infrared sensors of the goal units communicate with one another, and when an infrared signal is received the microcontroller triggers the light sources mounted to the goal to illuminate and indicate that a goal has been scored. Additionally, both the puck and the goal units are designed to reduce power consumption by switching between a low-energy mode or an active mode of operation.

A golf ball alignment device includes a golf ball having an exterior surface. Indicia is disposed on the exterior surface of the golf ball. The indicia include first and second line segments extending along a portion of the golf ball at a spaced interval. The spaced interval is narrower at a first end of each line segment than at a second end of each line segment such that the line segments converge from the second end of the line segments to the first end of the line segments. The indicia provide an alignment reference on the golf ball for a user to align the line segments with at least one of an intended direction of travel of the golf ball and a club head used to strike the ball in the intended direction of travel.

A golf ball that includes at least one core, and a cover layer formed from a cast polyurethane or polyurea, wherein the cover layer defines a first surface area portion of a uniform first color and a second surface area portion of a uniform second color, and a seam between the first surface area portion and the second surface area portion, wherein the first color is different than the second color.