416 results about "Ball tennis" patented technology

A baseball training device includes a target net from which balls will be fed to a unit that will throw the balls back to a player. The unit can be set to throw the balls in the air or on the ground so a variety of situations can be practiced.

The present invention overcomes deficiencies of existing line-calling devices by leveraging a single fixed-location camera to identify object state conditions that resolve object-tracking problems that otherwise require multi-camera or moving-camera solutions. Though described in the context of an automated tennis line-calling device, the invention is equally applicable to other object-tracking problems that can be resolved by identifying object state conditions without employing moving or multiple cameras. The tennis line-calling device is attached to (or at least located in proximity to) the net post of a tennis court, thereby enabling a “close-up” view of both static (court lines) and moving (ball, players, etc.) objects. In one embodiment, integration of a video camera system with line-calling functionality provides additional benefits, including attachment of a single turnkey device to any tennis net post so as to provide automated line-calling functionality without the need for any external video cameras or processing functionality.

A tennis training device for training a user proper tennis strokes with a means for attaching the tennis training device to an upper arm of a tennis player, a means for connecting the means for attaching to a tennis racquet, and a means for restricting the position of the tennis racquet in relation to the tennis player.

The present invention relates to devices more specifically for use in sports training in the fields of baseball, softball, golf, tennis, and other sports requiring control of, and the accuracy of a swing of the wrists, the positioning and follow through of the foots, and the positioning of the body when developing its precision and its reactions to moving objects.Important to the concept is the location of the pivot point or “center of action” associated with the muscular control developed when using this device. By attaching the resistance bands at the waist, proper control and muscle development relating to improved performance is accomplished.

An athletic glove for racquet sports in specific for the game of tennis, which includes a elastic straps permanently fixed at one end between the thumb and index finger and non-permanently fixed at the other end to the rear wrist cuff. The glove covers the thumb and index finger, leaving the middle finger, ring finger and little finger uncovered whereby, giving the player tactility in feeling the racquet and not hinder the game, at the same time giving the stability to the wrist of player. The glove extends slightly over the palm and back of the hand and is secured to the hand around the wrist area by a strap of the like.

An insect destroying device is battery operated and shaped somewhat like a squash or tennis racquet in order to provide a wide opening to enable insects to make contact with one of two outer grids and an inner grid. Both a manual and static technique is provided for enabling contact with insects while destroying them. An uppermost portion of the housing includes an open area in which a narrow strip of central grid is exposed adjacent two ground grids to enable exposure to an insect discovered along the corner between the wall and the ceiling, or where the wall meets a wall at a 90 degree angle, or between the wall and the floor where it is very difficult to have the insect make contact with the center grid or ground grids through the main openings of the grid support area.

The present invention relates to a training grip for a tennis racket. The training grip has a series of protrusions and recesses that receive a user's hand and place it in proper position for a particular grip type. The present invention, in one embodiment, includes a universal training grip that allows the grip to be used for more than one grip type. The present invention includes methods, systems and kits that encompass such a tennis training grip.

The invention relates to a ball serving device, in particular to a ball serving device for tennis sports. In order to achieve the purposes that the manufacturing cost is low, the tennis send-out anglecan be adjusted, a lot of balls can be put together, it is not required that the balls are put one by one, and time and labor are saved, the ball serving device for the tennis sports comprises an adjusting device which comprises a vertical rod and the like; a cross plate is arranged on the lower portion of a bottom plate, the vertical rod is installed on the left side of on the top of the cross plate, a rotating block is installed at the top of the vertical rod in a pin connection mode, the top of the rotating block is connected with the left side on the bottom of the bottom plate, a bearingpedestal is installed on the right side on the top of the cross plate, a nut is installed on the top of the bearing pedestal, the nut is connected with a bearing in the bearing pedestal, and fixing blocks are symmetrically installed on the left and right sides on the outer side surface of the nut. According to the ball serving device for the tennis sports, through a reminding device, people can bereminded that the balls are immediately sent out, so that people are prevented from being damaged; and due to the arrangement of the adjusting device, the tennis send-out angle can be adjusted.

A tennis training device comprises a ball, a rope, and a hollow pole, the ball being coupled with a portion of a first end of the rope, a part of the rope being in a cavity of the pole, the rope being knotted at or near the second end of the rope. The training device may be coupled with a support. A method of training various tennis shots comprises the steps of obtaining the training device; adjusting a length of a first portion of the rope which is outside the pole between an first end of the pole and the first end of the rope; holding the pole to set the ball at a selected height; and allowing a player to hit the ball with a tennis racquet. Multiple trainers may participate the training with the training devices and allow a player to practice a combination of different tennis shots.

An athletic glove for racquet sports in specific for the game of tennis, which includes a elastic straps permanently fixed at one end between the thumb and index finger and non-permanently fixed at the other end to the rear wrist cuff. The glove covers the thumb and index finger, leaving the middle finger, ring finger and little finger uncovered whereby, giving the player tactility in feeling the racquet and not hinder the game, at the same time giving the stability to the wrist of player. The glove extends slightly over the palm and back of the hand and is secured to the hand around the wrist area by a strap of the like.

An apparatus is described having a wide piece of stretchy fabric or other material worn around a person's waist, hips, arm, or thigh, that is adapted to hold balls snuggly against the person while performing an activity, such as playing tennis. Balls may be placed in the front, side or back of the person. Tension from the belt's elasticity, and friction from the fabric contacting the surface of the ball, for example the nap of the tennis ball, prevents the ball from slipping or rolling down the body. Balls may be accessed easily by reaching under the band of fabric from either the top or bottom of the band and pulling the ball out, or applying pressure to the top of the ball through the band and pushing the ball out. The device may be worn independently or may be integrated as an outer layer to a garment. The number of balls the person may carry is determined by the size person, width and circumference of the band, and comfort during activity.

A tennis training aid can be used to teach proper wrist and racket position for swings such as a forehand ground stroke, two-handed backhand stroke, or volley. A training aid includes a forearm attachment member that can be quickly and easily attached to a player's forearm. A wrist positioning member can be attached between the forearm attachment member and the player's racket to maintain proper wrist angle and racket position. A first wrist positioning member can be used for a forehand ground stroke or two-handed backhand stroke, while a second wrist positioning member can be used for volleys. The forearm attachment member can include a rotatable member, and the wrist positioning member can be slightly elastic, in order to allow the racket to move slightly with respect to the wrist, and to allow for slight wrist movement, in order to provide a natural feel for the player.

A handle for a lacrosse head is provided. The handle includes a hollow metal tube having an interior surface and an exterior surface. The hollow metal tube also has a first end for communicating with a throat portion of a lacrosse head and a second end opposing the first end. The exterior surface includes a plurality of sidewalls meeting at a plurality of intersections. The intersections have cross-sectional widths of greater magnitude than the sidewalls.

A portable tennis backboard that can be made to be foldable and formed by two vertical modules.