A spherical golf ball (10) is provided with at least 500 dimples and 30 bald patches symmetrically disposed over the surface of the ball, the disposition of the dimples being substantially the same in each of twelve regions (11) of the surface of the sphere which are defined by projecting on to the surface the edges of a regular dodecahedron. At the mid point of each edge of the dodecahedron there is a bald patch (20, 21, 22, 23, 24). Each bald patch has the shape of a spherical rectangular dumb...

There is provided a ball for sports in which an air injection valve attached to a rubber inner tube is covered by outer layers so as not to be exposed. An aperture for insertion of an air injection needle is provided in the outer layers so that it is in alignment with the hole for insertion of an air injection needle of the air injection valve.

A golf ball has a spherical surface inscribed or circumscribed with a regular icosahedron, and dimples formed in the spherical surface. This golf ball has at least 16 symmetrical axes or great circles and provides accurate flying directionality and driving distance. The invention provides in various embodiments 21, 25 or 31 great circles 22, 23, 24 and 25 that do not intersect the dimples on the surface.

A hand held game device consisting of a pair of spheres one of which contains a permanent magnet and the other of which contains a circuit which is actuated upon the two spheres becoming properly oriented with each other. The circuit containing sphere produces audible beeps upon being actuated. The beeps are produced for a predetermined period of time and are then terminated unless a new series of beeps is initiated upon the two spheres again becoming properly oriented with respect to each other...

A golf ball has many dimples formed on its spherical surface, provided that these dimples are existent on all great circles depicted on the spherical surface, whereby the aerodynamic properties are improved and sufficiently uniformized over the full spherical surface. All of dimples are positioned on the great circles so that no land portion defining a circumferential parting line is present. The number of dimples is increased to 272 in one embodiment and 482 in another.

A golf ball (10) has a plurality of dimples in its outer surface. At least 10% of the dimples are so disposed relative to one another that any two adjacemt dimples overlap. The region of each overlap may have a maximum width of from 1% to 20% of the diameter of the larger of any two overlapping dimples. Preferably, the dimples are arranged in a repeating pattern over the whole surface of the ball. The pattern may be defined by projecting on to the ball the edges of a regular dodecahedron (11, 12...

A cultivation ball is formed from at least one envelope, which is sealed or substantially sealed, containing the cultivation substrate; the plant is disposed in the ball, being separated from the substrate by at least one wall of the envelope or envelopes, and each envelope is made from a material through which the roots of the plant can pass once the ball has been set to grow. The substrate-containing envelope can be produced industrially at high rates of production, and is easily applied to th...

A golf ball cleaning device comprises a cylindrical casing 1 lined with a helical strip of bristles 8. A cleaning pad 7 is provided in the casing base and a removable cap 11 at the top allows a ball to be inserted for cleaning.

A tennis-ball is made by covering a spherical core with twelve substantially identical pentagonally-shaped pieces of a cover material. Before the pentagonally-shaped pieces are attached to the core, they are covered on their outermost surface by a removable layer of adhesive-impermeable barrier material (e.g. tissue paper). The barrier material restrains the movement of the pentagonally-shaped pieces when applied to the spherical core, so that a narrow uniform seam is obtained. When all twelve c...

A toy with balls which is provided with a playing field. The playing field is formed on at least one rotatable disc (92), where the disc (2) is provided with holes (3), the size of which allows falling of the balls (4) freely therethrough. Furthermore it is provided with an assorting unit (6) connectible with the hole (3) of the disc (2), wherein the disc (2) is arranged in cup-shaped house (1) to be held in the hand having a cover (1a) and a side which are made of transparent material. The asso...