An object of the present disclosure is to provide a golf ball having excellent spin performance on approach shots. The present disclosure provides a golf ball comprising a golf ball body and a paint film composed of at least one layer and formed on a surface of the golf ball body, wherein an outermost layer of the paint film contains, as a base resin, a polyurethane obtained by a reaction between a polyisocyanate composition and a polyol composition, and the outermost layer of the paint film has tackiness of 0.294 N or more measured with a friction tester.

An object of the present disclosure is to provide a golf ball from which stains are easily removed. The present disclosure provides a golf ball comprising a golf ball body and a paint film composed of at least one layer and formed on a surface of the golf ball body, wherein an outermost layer of the paint film contains, as a base resin, a polyurethane obtained by a reaction between a polyisocyanate composition and a polyol composition, and the outermost layer of the paint film has tackiness of less than 0.294 N measured with a friction tester.

Methods for determining performance information for an object located within an area include obtaining magnetic field information for the area, measuring first magnetic field data when the object is located at a first position within the area, and determining performance information for the object within the area based on the magnetic field information for the area and the first magnetic field data.

A golf ball has a golf ball subassembly having one or more subassembly layers, the one or more subassembly layers including at least one marked layer. The golf ball also has a cover layer surrounding the golf ball subassembly. The golf ball further has a marking pattern disposed on the at least one marked layer. The marking pattern has a first portion including a first material configured to be detected by a first detector type and a second portion including a second material configured to be detected by a second detector type.

A small electronic device used to perform alignment of a lined golf ball in preparation for putting. The device is battery powered and includes one or more motors for rotating the golf ball at a high speed. The device further includes one or more photonic line sensors disposed at the golf ball for identifying the line on the golf ball and for communicating with a microcontroller which coordinates the electric rotation motors to align the golf ball to the device. The electronic device also features a mechanical loading mechanism which holds the golf ball for rotation during the alignment process and releases the golf ball to the putting green without rotation when alignment is complete.

A method and system for determining concentricity of a multiple layer golf ball are disclosed herein. One or more images of a golf ball are generated using an X-ray source, a camera or a digital detector, and an image intensifier. An edge detection algorithm is preferably utilized. The method also includes calculating Y,Z center coordinates of the a best fit diameter or ellipse of the inner edge layer and outer edge layer of the multiple layer golf ball.

The present invention generally relates to lightweight, portable robot for analyzing golf balls for short game performance attributes. The preferred robot is specifically designed to be lightweight and portable and to be able to hit a golf ball off of the ground or a mat that simulates the ground such that realistic short game performance of clubs and balls can be evaluated.

A portable device for determining whether a tennis ball is compliant with a stated deformation standard compresses a tennis ball by application of a pre-determined pre-load followed by a pre-determined force. A scale is provided for measuring the deformation of the tennis ball after it is compressed. The device includes several plate members disposed in parallel and relatively movable a controllable amount by a shifting mechanism.

Systems and apparatus for Radio Frequency Identification (RFID) golf ball testing include, in at least one aspect, an apparatus including: one or more RFID readers having associated read zones; a star wheel unit defining cavities to receive golf balls; golf ball sensors including at least one sensor for each respective path through the read zones; kickers including at least one kicker positioned after each respective path through the read zones and arranged to change a golf ball's direction of travel when the at least one kicker is activated; and a controller coupled with the kickers, the golf ball sensors, and the one or more RFID readers, wherein the controller is configured to activate any of the kickers responsive to the one or more RFID readers inadequately reading an RFID tag in a golf ball detected by the at least one sensor for that kicker's associated path through a read zone.

Systems and apparatus for Radio Frequency Identification (RFID) golf ball testing include, in at least one aspect, an apparatus including: one or more RFID readers having associated read zones; a star wheel unit defining cavities to receive golf balls; golf ball sensors including at least one sensor for each respective path through the read zones; kickers including at least one kicker positioned after each respective path through the read zones and arranged to change a golf ball's direction of travel when the at least one kicker is activated; and a controller coupled with the kickers, the golf ball sensors, and the one or more RFID readers, wherein the controller is configured to activate any of the kickers responsive to the one or more RFID readers inadequately reading an RFID tag in a golf ball detected by the at least one sensor for that kicker's associated path through a read zone.