Described are a carcass for a sports ball having a textile element, which has at least two segments joined by a seam and defines a shape of the carcass, and wherein the at least two segments and the seam are warp-knitted or weft-knitted in a single piece, and a method of making a carcass for a sports ball.

The invention relates to a sports ball comprising a rubber core and optionally a felt, the rubber core defining an internal volume and an outer surface, the felt being provided on the outer surface of the rubber core, and the rubber core comprising: natural and/or synthetic rubber; and a biodegradability-enabling additive comprising at least one organic compound in a carrier material, wherein the organic compound is a nutrient substrate for an active landfill or marine environment strain of bacteria. The invention further relates to a method for manufacturing a tennis ball including: a) mixing natural rubber and butadiene rubber with further ingredients and the biodegradability-enabling additive; b) extruding a portion of the mixture; c) utilizing the extruded portion for forming a shellpart; d) assembling a core by attaching at least two shellparts to each other; e) inflating the core; and f) providing a felt on the surface of the core.

The invention relates to a sports ball comprising a rubber core and optionally a felt, the rubber core defining an internal volume and an outer surface, the felt being provided on the outer surface of the rubber core, and the rubber core comprising: natural and/or synthetic rubber; and a biodegradability-enabling additive comprising at least one organic compound in a carrier material, wherein the organic compound is a nutrient substrate for an active landfill or marine environment strain of bacteria. The invention further relates to a method for manufacturing a tennis ball including: a) mixing natural rubber and butadiene rubber with further ingredients and the biodegradability-enabling additive; b) extruding a portion of the mixture; c) utilizing the extruded portion for forming a shellpart; d) assembling a core by attaching at least two shellparts to each other; e) inflating the core; and f) providing a felt on the surface of the core.

A device is provided, including a deformable shell defining an inner space including at least one piezoelectric system. The piezoelectric system includes a flexible piezoelectric membrane capable of generating electric energy under the effect of a deformation to which it is submitted, a rechargeable electric power source, formed on a flexible substrate, and an electronic circuit. The electronic circuit includes a processing circuit for generating and storing data according to the electric energy generated by the piezoelectric membrane, and connected to the electric power source for its electric power supply, and a wireless transmitter connected to the processing circuit to transmit the data stored therein and connected to the electric power source for its electric power supply. Each piezoelectric system is totally arranged on and/or inside of the deformable shell.

A small, lightweight portable multi-directional or omni-directional rolling abdominal exercise device includes an over-molded roller ball having an outer molded layer; a housing supporting the roller ball for multi-directional movement; bearing members within the housing allowing for the rotational mounting of the roller ball; and handles coupled to the housing allowing for the user to engage the device with at least one of hands, elbows, knees or feet. The over-molded roller ball includes a ball core formed of a first and second hemispherical core member and an outer molded layer which completely encapsulates the ball core forming the ground engaging surface of the roller ball and which is configured to minimize slip, wherein each of the first and second hemispherical core members include grooves configured to engage the outer molded layer and wherein the outer molded layer comprises one of TPE, TPR, TPU, Silicone, rubber and mixtures thereof.

A small, lightweight portable multi-directional or omni-directional rolling abdominal exercise device includes an over-molded roller ball having an outer molded layer; a housing supporting the roller ball for multi-directional movement; bearing members within the housing allowing for the rotational mounting of the roller ball; and handles coupled to the housing allowing for the user to engage the device with at least one of hands, elbows, knees or feet. The over-molded roller ball includes a ball core formed of a first and second hemispherical core member and an outer molded layer which completely encapsulates the ball core forming the ground engaging surface of the roller ball and which is configured to minimize slip, wherein each of the first and second hemispherical core members include grooves configured to engage the outer molded layer and wherein the outer molded layer comprises one of TPE, TPR, TPU, Silicone, rubber and mixtures thereof.

A ball, and in particular a baseball or softball, including one or more sensors such as accelerometers and/or inertial measurement units, and systems and methods using the same to improve a pitcher's pitching performance are described herein. In some embodiments, the ball may include one or more inertial measurement units and/or accelerometers capable of monitoring motion of the ball while it is thrown. Once a ball is thrown, in response to the inertial measurement unit(s) and/or accelerometer(s), one or more indicators may be caused to perform an action. For example, one or more user interfaces may be used to display graphs for illustrating a trajectory of a ball after it has been thrown. Various statistics, such as velocity, a change in vertical displacement, a change in horizontal displacement, and a spin rate may also be indicated on the user interface.

A ball, and in particular a baseball or softball, including one or more sensors such as accelerometers and/or inertial measurement units, and systems and methods using the same to improve a pitcher's pitching performance are described herein. In some embodiments, the ball may include one or more inertial measurement units and/or accelerometers capable of monitoring motion of the ball while it is thrown. Once a ball is thrown, in response to the inertial measurement unit(s) and/or accelerometer(s), one or more indicators may be caused to perform an action. For example, one or more user interfaces may be used to display graphs for illustrating a trajectory of a ball after it has been thrown. Various statistics, such as velocity, a change in vertical displacement, a change in horizontal displacement, and a spin rate may also be indicated on the user interface.

The aqueous adhesive for a tennis ball includes rubber latex. The rubber latex is a mixture of liquid rubber latex and solid rubber latex. When a solid content in the aqueous adhesive is measured at a temperature of 140? C. by a curelastometer, a torque is not less than 0.26 N.Math.m after 10 minutes from start of heating. The tennis ball includes a seam portion formed of the aqueous adhesive for a tennis ball.

A tennis ball may include a spherical hollow core having an inner surface including material shift lines and a textile outer layer over and about the core.