Abstract: A running deck assembly and a treadmill are provided. The running deck assembly includes: a front running deck; a rear running deck, wherein a front end face of the rear running deck abuts a rear end face of the front running deck; a flexible layer, laid on an upper surface of the front running deck and an upper surface of the rear running deck; and an annular running belt, rotatably mounted around the front running deck and the rear running deck with a clearance.

Abstract: Golf ball with through-hole(s) incorporating hollow air pocket(s) to produce thinner outer wall facilitating more speed and responsiveness off of the golf club's face at impact is disclosed. A thin outer wall is desirable in golf ball design. A wall that is too thick inhibits rebound and promotes fracturing. A thinner wall with structural supports allows for the outer wall to be thinned while producing an internal structure that promotes rebound and not structural failure. This volume of material formed into the volume to help resist deformation of the outer shell. The internal structure between the outer shell and inner axial shaft can be a honeycomb-like pattern or concentric rings to create more structure, less air volume and faster response. These smaller compartments of air will create more rebound because of the additional force of the more responsive inner structure providing a spring effect as well.

Abstract: The invention relates to a device for developing hands muscles, formed by a body comprising a partially or fully hollow container (1) fitted with an upper movable cover (2) having one hole or a series of holes provided at one o more points along the periphery thereof for the coupling of transparent flexible tubes (3) which are open at both ends. According to the invention, the lower end (4) of the tube (3) is used for the insertion of a part having a surface that is fully or partially covered, especially in the peripheral area thereof, with longitudinal segments in the forms of pins or needles (6) inclined in the same direction with a variable degree of inclination. The ends (8) os said longitudinal segments are kept in contact with the inner face or wall of the tube (3). The device can be used for therapeutic uses, as a piece of gym equipment or as a toy.

Abstract: A golf ball having a core, an outer core layer, a medial layer, and a cover is disclosed, as well as a method of making. The outer core layer defines perforations therethrough. The core and medial layer are formed integrally through the perforations.

Abstract: A golf ball includes an inner layer, a cover layer, and a cavity. The cavity includes a conduit connecting the cavity with an exterior of the golf ball. The cavity contains a matrix comprising particles of a first material bound together by a second material. The first material has a density greater than water and the second material is water soluble. Upon prolonged submersion in water, the matrix dissolves allowing the first material particles to exit the cavity. The removal of the mass of the first material particles lowers the density of the golf ball, allowing the golf ball to float to the surface of the water.

Abstract: The invention relates on one hand to a celluloid-free table-tennis ball, preferably having a diameter of 38.5 to 48 mm, a weight between 2.0 and 4.5 grams, and a shell thickness (approximately) between 0.20 mm and 1.30 mm, where the shell is composed of plastic, whose principal component is an organic non-crosslinked polymer, which in its main chain has not only carbon atoms but also heteroatoms; and on the other hand also to a process of manufacturing a table-tennis ball of this kind, where mostly in a first step two or more shell parts are manufactured, these shell parts are joined in a subsequent step.

Abstract: The object of the present invention is to provide A method for producing a golf ball that is excellent In the durability of the mark, the adhesion of the paint Film and the productivity. In the present invention, since the curing agent contained in the paint covering the mark is used to cure the resin component forming the mark, there is no increase in the viscosity or the gellation of the ink for printing the mark, and thus the mark is printed well during the production of the golf ball.

Abstract: A golf ball with relatively rigid inner core and soft intermediate layer is disclosed. The rigid inner core maintains the balls' high coefficient of restitution at high impact speeds, while the soft intermediate layer provides better feel for greenside play. The intermediate layer can be made from a highly neutralized polymer, which can be thermoset or thermoplastic. The highly neutralized polymer is foamed or otherwise has its specific gravity reduced. The intermediate layer can also be made from a castable reactive liquid polymer.

Abstract: A golf ball with relatively rigid inner core and soft intermediate layer is disclosed. The rigid inner core maintains the balls' high coefficient of restitution at high impact speeds, while the soft intermediate layer provides better feel for greenside play. The intermediate layer can be made from a highly neutralized polymer, which can be thermoset or thermoplastic. The highly neutralized polymer is foamed or otherwise has its specific gravity reduced. The intermediate layer can also be made from a castable reactive liquid polymer.

Abstract: A golf ball is provided having a controlled variable moment of inertia. The golf ball includes a core defining at least one hollow channel. At least one movable weight is located within each hollow channel. The end of the hollow channel at the outer edge of the core is enclosed with a plug. The movable weight and plug may each further include a magnet or the hollow channel may include a placement member such as a spring to control the movement of the weight. When the present golf ball is struck, the spin rate forces the weights to move from the interior of the core outwardly towards the outer edge of the core, thereby varying the moment of inertia of the golf ball. A method of manufacturing the present golf ball is also provided. The golf ball also significantly reduces hooks and slices due to the gyroscopic effect of the moving weight(s) to the outer edge of the core.

Abstract: A multi-piece golf ball with improved carry without sacrificing properties like spin performance, durability, coefficient of restitution, and the feel when the ball is hit, the golf ball including a core, an intermediate layer surrounding the core, and the cover surrounding the intermediate layer, where a plurality of voids are distributed in at least one of the core, the intermediate layer or the cover along the spherical surface of the core or intermediate layer, or the cover. 20-600 voids are formed on at least one of the interfaces between the core and the intermediate layer, between a plurality of intermediate layers, or between the intermediate layer and the cover.

Abstract: A golf ball having an improved core that comprises solid projections to produce a partially hollow core that is sectioned into hollow pockets separated by solid walls, thereby providing a durable core that has a reduced specific gravity. The projections being flexible to allow the core to deform upon impact without fracturing or failing in use. The volume occupied by the projections is less than the volume of the voided areas. Partially hollow layers formed by projections that create compartments between layers. At least one hollow layer placed between the core and cover will reduce the specific gravity and allow for an increased amount of perimeter weighing.

Abstract: A golf ball is provided having a controlled variable moment of inertia. The golf ball includes a core defining at least one hollow channel. At least one movable weight is located within each hollow channel. The end of the hollow channel at the outer edge of the core is enclosed with a plug. The movable weight and plug may each further include a magnet or the hollow channel may include a placement member such as a spring to control the movement of the weight. When the present golf ball is struck, the spin rate forces the weights to move from the interior of the core outwardly towards the outer edge of the core, thereby varying the moment of inertia of the golf ball. A method of manufacturing the present golf ball is also provided. The golf ball also significantly reduces hooks and slices due to the gyroscopic effect of the moving weight(s) to the outer edge of the core.

Abstract: The golf ball having either a smooth or dimpled surface is disclosed including a sphere with peripheral channels spaced and intersected at distances on the surface, with part of the air flow on the front over-pressure area communicating with the rear depression of the ball in its forward movement, facilitating aerodynamic air circulation through it, resulting in reduced resistance, thereby facilitating rotation and lift, enhancing the advance of the ball.

Abstract: A golf ball comprising an inner core, an outer core, and a cover is disclosed. The outer core surrounds the inner core, and the cover encases the cores. The inner core is preferably a pre-formed selectively weighted symmetrical, but non-spherical insert, which may be made from either a high or low specific gravity material to control the moment of inertia and spin rate of the ball. The outer core is over-molded around the pre-formed insert to form a spherical core. Alternatively, the inner core insert has outer pockets defined thereon. These pockets are adapted to receive the outer core materials, which may have either a high specific gravity or a low specific gravity.

Abstract: The present invention is directed to a golf ball and to a process for forming a golf ball having at least one layer, where the layer is formed of a saponified polymer/oxa acid blend, having from about 65 to about 99 parts of at least one saponified polymer and from about 35 to 1 parts of at least one oxa acid, based on 100 parts by weight of the saponified polymer/oxa acid blend. The layer may be foamed or unfoamed, and may form at least a portion of any of the cover, the core, or a mantle layer situated between the cover and the core.

Abstract: The golf ball consists in a ball with diametric holes, perforations or orifices through it, spaced at appropriate distances on the surface and with a hollow center created by the crossing of the through orifices, or by an added spherical chamber, it can use also a central spherical compact zone or a rubber thread ball, using in this case tangential holes to said central zone.

Abstract: The present invention is directed to a golf ball and a to a process for forming a golf ball having least one layer, where the layer is formed of a saponified polymer/polyamide blend, having from about 1 to about 99 parts of at least one saponified polymer and from about 99 to 1 parts of at least one polyamide polymer, based on 100 parts by weight of the saponified polymer/polyamide blend. The layer may be foamed or unfoamed, and may form at least a portion of any of the cover, the core, or an intermediate layer situated between the cover and the core.

Abstract: Golf ball compositions, which contain olefinic polymers produced by use of single-site catalysts. Such polymers can be functionalized with a post-polymerization reaction. The single-site catalyzed polymers may be blended with ionomers, other grafted or non-grafted single-site catalyzed polymers, thermoplastics, non-single-site polymers, or other non-ionomeric polymers. The compositions can be foamed or unfoamed. Golf balls that employ at least one layer of these compositions in any of the golf ball cover, core, or a mantle situated between the cover and the core provide ball properties and performance similar to and in some cases better than the state of the art ionomer based golf balls.

Abstract: A golf ball having an improved core that comprises solid projections to produce a partially hollow core that is sectioned into hollow pockets separated by solid walls, thereby providing a durable core that has a reduced specific gravity. The projections being flexible to allow the core to deform upon impact without fracturing or failing in use. The volume occupied by the projections is less than the volume of the voided areas.

Abstract: The present invention is directed to a golf ball and a to a process for forming a golf ball having least one layer, where the layer is formed of a saponified polymer/metallocene catalyzed polymer blend, having from about 1 to about 99 parts of at least one saponified polymer and from about 99 to 1 parts of at least one metallocene catalyzed polymer, based on 100 parts by weight of the saponified polymer/metallocene catalyzed polymer blend. The layer may be foamed or unfoamed, and may form at least a portion of any of the cover, the core, or a mantle layer situated between the cover and the core.

Abstract: The invention is directed to golf ball core compositions comprising at least one natural or synthetic rubber and at least one high Vicat softening temperature thermoplastic material, methods of preparing the compositions, and golf ball cores and golf balls including the compositions. The compositions of the invention are made by mixing at least one natural or synthetic rubber and at least one thermoplastic or thermoplastic elastomer at a first temperature; cooling the mixture to a second temperature which is below an activation temperature of a free-radical initiator; adding the free-radical initiator to the first mixture to form a second mixture; and heating the second mixture to a third temperature that to facilitate crosslinking.

Abstract: The present invention is directed to a golf ball and to a process for forming a golf ball having at least one layer, where the layer is formed of a saponified polymer/oxa acid blend, having from about 65 to about 99 parts of at least one saponified polymer and from about 35 to 1 parts of at least one oxa acid, based on 100 parts by weight of the saponified polymer/oxa acid blend. The layer may be foamed or unfoamed, and may form at least a portion of any of the cover, the core, or a mantle layer situated between the cover and the core.

Abstract: The invention provides a golf ball having a core, intermediate layer, cover and/or coating comprising in whole or in part of an anionic polyurethane or polyurea ionomer. The anionic polyurethane or polyurea ionomer preferably comprises a sulfonate or carboxylate group. The anionic polyurethane or polyurea ionomer may be blended with conventional materials employed to form golf balls, cores, intermediate layers and covers. The composition can be foamed or unfoamed.

Abstract: Golf ball compositions, which contain olefinic polymers produced by use of single-site catalysts. Such polymers can be functionalized with a post-polymerization reaction. The single-site catalyzed polymers may be blended with ionomers, other grafted or non-grafted single-site catalyzed polymers, thermoplastics, non-single-site polymers, or other non-ionomeric polymers. The compositions can be foamed or unfoamed. Golf balls that employ at least one layer of these compositions in any of the golf ball cover, core, or a mantle situated between the cover and the core provide ball properties and performance similar to and in some cases better than the state of the art ionomer based golf balls.

Abstract: The disclosed invention provides novel golf ball compositions which contain olefinic based ionomers and non-ionic olefinic copolymers produced by use of metallocene catalysts. These compositions exhibit improved mechanical properties such as tensile and flexural properties, and can be foamed or unfoamed. Golf balls that employ at least one layer of these blends in any of the golf ball cover, core, or a mantle situated between the cover and the core provide ball properties and performance similar to and in some cases better than the state of the art ionomer based golf balls.

Abstract: A golf ball includes a spherical outer-layer core having a concentric spherical inner cavity and having a wall thickness of 5-10 mm. A spherical inner-layer core having a diameter smaller than that of the spherical cavity is disposed within the spherical cavity of the outer-layer core. A cover is formed on the outer surface of the outer-layer core. A liquid is charged into the space between the outer-layer core and the inner-layer core to thereby form a liquid layer having a thickness of 1-3 mm. The liquid has a specific gravity substantially equal to that of the material of the inner-layer core. In the golf ball, the inner-layer core and outer-layer core can rotate independently while the golf ball is traveling. Also, the golf ball has sufficient resilience and strength.

Abstract: The disclosed invention provides novel golf ball compositions which contain non-ionic olefinic copolymers produced by use of metallocene catalysts, wherein the metallocene catalyzed polymers have been functionalized with a post-polymerization reaction. The grafted metallocene catalyzed polymers may be blended with ionomers, non-grafted metallocene catalyzed polymers, or other non-ionomeric polymers. These compositions exhibit improved mechanical properties such as tensile and flexural properties, and can be foamed or unfoamed. Golf balls that employ at least one layer of these compositions in any of the golf ball cover, core, or a mantle situated between the cover and the core provide ball properties and performance similar to and in some cases better than the state of the art ionomer based golf balls.

Abstract: Novel golf ball compositions which contain liquid crystalline polymers and liquid crystalline polymer blends. These compositions can be foamed or unfoamed. Golf balls that employ at least one layer of these blends in any of the golf ball cover, core, or a mantle situated between the cover and the core provide ball properties and performance similar to and in some cases better than the state of the art ionomer based golf balls.