Abstract: A short-flight golf training ball has a spherical hollow rubber carcass, a felt cover, and a hard spherical inner core. The spherical hollow rubber carcass has a spherical outer wall and a spherical interior wall defining a hollow spherical interior that has an interior diameter. The felt cover affixed to the outer wall. The hard spherical inner core has an outer diameter that is less than interior diameter of the carcass and is free or substantially free to move around at will in the hollow spherical interior.

Abstract: An antimicrobial sports equipment piece used in a sport or game, namely an antimicrobial tennis ball, is described. Also described are methods of using an antimicrobial tennis ball and methods of preventing, inhibiting, or killing microbes contacting the tennis ball during play to prevent or inhibit contamination by a microbe or cross-contamination between persons contacting the tennis ball.

Abstract: To provide a tennis ball felt which has less occurrence of creases at the time of forming a tennis ball. According to one embodiment, a tennis bass felt, which is covered on a core of a tennis ball, includes: a base fabric formed of stretchy material; and fibers fixed with the base fabric.

Abstract: The present invention relates to a novel method for manufacturing a cellular elastomeric polyurethane foam ball. The product polyurethane foam ball may be used as a core for a tennis ball which meets ITF specifications for tennis balls, including weight, diameter, bound, forward deformation and return deformation.

Abstract: Tennis ball which comprises an elastomeric polyurethane foam having a ball shape and a density of 250-800 kg/m3, which foam is covered with a textile material.

Abstract: The present invention is an article and process for determining the site of impact of a movable object on a treated surface, where a tennis ball is treated with a striking composition, and a boundary line region is treated with a receiving composition such that when the striking composition and the receiving composition are in physical contact, a calorimetric indicator is left on the receiving composition to indicate the point of contact.

Abstract: The present invention relates to a novel method for manufacturing a cellular elastomeric polyurethane foam ball. The product polyurethane foam ball may be used as a core for a tennis ball which meets ITF specifications for tennis balls, including weight, diameter, bound, forward deformation and return deformation.

Abstract: The disclosed ball with improved structure of the present invention comprises a hollow bladder that can be inflated in to a ball-like shape, a reinforcement layer that is a layer of cloth having intensive pores and fixedly covering up to the outer surface of the bladder, a buffer layer that is made from foam and fixedly attached to the outer surface of the reinforcement layer, a cover layer that is a layer of cloth having intensive pores and fixedly attached to the outer surface of the buffer layer, and an external layer that fixedly covers up the outer surface of the cover layer and forms the appearance of the ball.

Abstract: The present invention provides a game ball with a transient marking feature that may be used on any court surface. No preparation of the court surface is required. The game ball is coated with a temporary marking agent that is encapsulated or otherwise sealed against exposure to the air. When the ball contacts a surface with sufficient velocity, a small quantity of the marking agent is liberated to provide a visible mark on the surface at the point of contact. Similar to a “disappearing ink”, the marking agent dissipates after being released from the microcapsules.

Abstract: An encapsulated marking agent is used to provide a temporary mark at a point of contact between two objects. In a specific example, a game ball is coated with a temporary marking agent that is encapsulated or otherwise sealed against exposure to the air. When the ball contacts a surface with sufficient velocity, a small quantity of the marking agent is liberated to provide a visible mark on the surface at the point of contact. Similar to a “disappearing ink”, the marking agent dissipates upon exposure to air.

Abstract: An encapsulated marking agent is used to provide a temporary mark at a point of contact between two objects. In a specific example, a game ball is coated with a temporary marking agent that is encapsulated or otherwise sealed against exposure to the air. When the ball contacts a surface with sufficient velocity, a small quantity of the marking agent is liberated to provide a visible mark on the surface at the point of contact. Similar to a “disappearing ink”, the marking agent dissipates upon exposure to air.

Abstract: The present invention is a tennis ball that includes an outer fabric cover that has a phosphorescent component.

Abstract: A fabric for use as a tennis ball covering and method to manufacture the same. The fabric has a felted outer surface composed of entangled fibres, said outer surface being provided with a three dimensional pattern thereon.

Abstract: A tennis ball having an outer felt fabric comprising at least two layers of non-woven fabric with the outer layer having a weight ratio of wool therein greater than 45% and the inner or bottom layer having a weight ratio of wool therein less than 40%.

Abstract: System for detecting whether a conductive felt covered game ball has landed within the boundary area of a gaming surface. The system incorporates permanently installed decorative circuits which stay in an active open state while awaiting touch down of conductive game ball. Completion or closure of active open circuit determines the ball in-bounds and thus still in-play. The control box will transmit a filtered signal to an audible tone or a wireless hearing aid designed for official use. Controversial opinions regarding continuation or elimination of the human element in officiating has allowed such a system to be designed which will initially aid officials and henceforth apply accruing detection modifications as these demands present themselves.

Abstract: A ball structure (1) is disclosed which comprises three panels (2, 3, 4) of identical shape which can be joined to form a spherical ball. The panels (2, 3, 4) can be cut from a template and their shape is adapted to minimize wastage of a substrate material cut according to a pattern provided by the template.

Abstract: Low air permeable, pressurized articles such as play balls, e.g., a tennis ball, have a thin barrier layer formed on the vulcanized rubber core. The barrier layer is chemically bonded to the internal and/or external surface of the core, e.g., by the reaction of a Lewis acid, e.g., sulfur trioxide, with the core rubber. The thin barrier layer permits the tennis ball to be flexible and have good rebound life and yet extends the play life thereof before ball rebound or softness changes to undesired levels.