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| Number | Title | Issue Date |
| 7241237 | Method and apparatus for temporarily marking a point of contact 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 agains... | 07/10/2007 |
| 7160325 | Implantable medical balloon and valve A medical balloon, implantable in human tissue, of unitary silicone construction. The balloon is self-sealing upon removal of an inflation implement. The balloon device comprises a molded valve portion which is dip-coated in a silicone dispersion to create a balloon... | 01/09/2007 |
| 7144354 | Balls, balloons and other inflatable objects for gymnastic or therapeutic use Balls, balloons and other inflatable objects made from a plastic material with an improved resistance to tearing, suitable for use in gymnastic activities, for rehabilitation and physiotherapy comprise as stiffening material an inert mineral charge having a granulom... | 12/05/2006 |
| 6726584 | Method and apparatus for temporarily marking a point of contact 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 ba... | 04/27/2004 |
| 6508732 | Tennis ball The present invention is a tennis ball that includes an outer fabric cover that has a phosphorescent component.... | 01/21/2003 |
| 6227992 | Textile for tennis ball covering and method for manufacturing the same 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.... | 05/08/2001 |
| 5830092 | Tennis ball fabric 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%.... | 11/03/1998 |
| 5800292 | Tennis court boundary detection system 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 con... | 09/01/1998 |
| 5603497 | Three piece ball template 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 materia... | 02/18/1997 |
| 5593157 | Long life, low air permeable pressurized articles such as play balls 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 react... | 01/14/1997 |
| 5558325 | Play balls or pressureless tennis balls A hollow rubber play ball is disclosed that uses a combination two or more fillers to produce desirable playing properties in a tennis ball as specified by the International Lawn Tennis Federation (ITF). The preferred play ball is a pressureless tennis ba... | 09/24/1996 |
| 5413333 | Colored adhesive for tennis ball seams and a tennis ball seam containing the same A tennis ball is provided which has an elastomeric core and a cover having a seam. A colored seam adhesive bridges the seam and desirably matches the preferred yellowish color of the cover.... | 05/09/1995 |
| 5413331 | Soft reboundable amusement ball and outer skin material An amusement ball is provided which has both a soft, pliable surface texture and good rebound characteristics. The ball has a resilient inner body at its core which is surrounded by at least one layer of foam. The foam imparts softness to the exterior of ... | 05/09/1995 |
| 5288261 | Figurative toy missile A figurative toy missile in animal-like or humanoid soft form defined by a head and a torso having appendages extending therefrom. The missile structure is such that when the missile is thrown by a player, it will spin, or execute other excursions in flig... | 02/22/1994 |
| 5225258 | Rubber composition for hollow core of pressureless tennis ball A rubber composition suitable for producing hollow cores of pressureless tennis balls and superior in rebound properties and feeling of striking balls by racket, which contains, as a rubber component, 30 to 100% by weight of a polybutadiene rubber having ... | 07/06/1993 |
| 5211788 | Tennis ball and method of manufacturing the same A tennis ball comprising a hollow, spherical rubber ball (2) and a felt covering (4) attached to the rubber ball by an adhesive, characterized in that the felt covering is cut out from a felted fabric manufactured through steps of knitting a circular knit... | 05/18/1993 |
| 5209471 | Pressureless tennis ball A pressureless tennis ball which has excellent rebound properties and produces a satisfactory feeling of striking retained over a long period of time, the tennis ball having a hollow spherical core made from a rubber composition containing a rubber and 5 ... | 05/11/1993 |
| 4946166 | Tennis ball A hollow tennis ball which comprises a hollow core of elastic material which encloses an interior space, and a layer of substantially felt-like material which is applied to the outer surface of the hollow core. The overall weight of the hollow tennis ball... | 08/07/1990 |
| 4947466 | Tennis ball A hollow tennis ball which comprises a hollow core of elastic material which encloses an interior space, and a layer of substantially felt-like material which is applied to the outer surface of the hollow core. The overall weight of the hollow tennis ball... | 08/07/1990 |
| 4876658 | Method and apparatus for systematically testing objects including tennis balls A computer-controlled object testing and measuring apparatus having a plurality of stations including a control center for initiating, controlling and terminating each procedure at each station. The control center also controls transport and handling of t... | 10/24/1989 |
| 4853056 | Method of making tennis ball with a single core and cover bonding cure A method of making tennis balls by a single core part and fabric piece bonding step is disclosed wherein an assembly of core parts, including a pair of hemispheric core halves, and fabric cover pieces, including a pair of figure eight fabric dumbbells, ar... | 08/01/1989 |
| 4853057 | Method of making tennis balls or the like A method of making tennis balls by a single core part and fabric piece bonding step is disclosed wherein an assembly of core parts, including a pair of hemispheric core halves, and fabric cover pieces, including a pair of figure eight fabric dumbbells, ar... | 08/01/1989 |
| 4830370 | Game ball A game ball of the type having a flexible resilient wall defining a space inside the ball that is fluid tight and contains a compressible fluid is given a break signalling capability by placing a small quantity of very fine particulate material in that sp... | 05/16/1989 |
| 4765853 | Method of making a pressurized ball An improved method of making a fabric covered tennis ball is disclosed wherein a pair of molded semi-hemispheric elastomeric material core halves are joined together by a thermosetting adhesive means, the joining of the core halves taking place in the pre... | 08/23/1988 |
| 4739989 | Tennis ball A tennis ball comprised of a shell and cover, the ball having increased deformation for beginner's play and being characterized by the ball being between 30 and 52 grams in weight and 5.0 to 7.6 centimeters in diameter. The wall thickness of the shell is ... | 04/26/1988 |
| 4616828 | Tennis ball Disclosed is a tennis ball including a continuous or discontinuous groove formed in the rubber spherical core. The groove extends about the spherical core below a track formed between two felt cover members. The groove of the spherical core controllably r... | 10/14/1986 |
| 4592550 | Tennis balls and core therefor An object of the present invention is to obtain a tennis ball and a core for tennis ball which keeps high values within the ITF standard and besides has excellent durability. That is, the present invention provides a core for tennis ball obtained by vulca... | 06/03/1986 |
| 4580781 | Pressureless tennis ball Pressureless tennis balls which comply with regulations of the International Tennis Federation and produce a satisfactory feel of striking retained over an extended period of play, and which comprises a hollow spherical core made from a rubber composition... | 04/08/1986 |
| 4504345 | Tennis-balls 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 removab... | 03/12/1985 |
| 4439471 | Tennis ball with fabric covering A tennis ball conforming to the 1968 regulation of the International Federation of Lawn Tennis comprises a hollow elastic core and an improved cover bonded to the core by an adhesive mixture. The cover has a specific weight less than 0.22 g/cm3... | 03/27/1984 |
| 4327912 | Tennis ball An improved tennis ball having an integrally molded valve in the sidewalls thereof for assuring constant pressure within the ball and, therefore, constant playing characteristics. The valve is characterized by being of unitary construction and having a no... | 05/04/1982 |
| 4306719 | Cores for tennis balls A core for a tennis-ball, the tennis-ball having either an internal pressure substantially equal to atmospheric pressure (a "pressureless" ball) or an internal pressure of up to 7 p.s.i. (0.49 Kg.cm-2) above atmospheric pressure (a "low-pressur... | 12/22/1981 |
| 4299029 | Method of making an electrically conductive game ball A ball for playing a game, such as tennis, and having a plurality of unwoven electrical conductive networks which are formed by electrically conductive fibers and which extend at least partially on the outer surface of the ball. The ball is made by first ... | 11/10/1981 |
| 4249730 | Tennis ball comprising a hollow sphere of a rubber containing filler A tennis ball is provided comprising a hollow sphere of natural rubber and/or synthetic rubber similar in resilience properties to natural rubber, said rubber containing a filler, said sphere containing a gas having the same or higher pressure than that o... | 02/10/1981 |
| 4248658 | Apparatus for the manufacture of balls A method and apparatus for adhesively applying cover pieces to a resilient tennis ball core. In one embodiment the exterior of the core is subjected to vacuum to expand the core while the covers, positioned in a flat orientation, are applied and adhesivel... | 02/03/1981 |
| 4241118 | Tennis balls and method of manufacture The disclosure is of a method of adhering a textile tennis ball cover to a tennis ball core. The method comprises providing a core and a textile tennis ball cover for the core. A hot-melt adhesive is also provided, disposed in association with the cover m... | 12/23/1980 |
| 4238526 | Method of coating objects A three-dimensional object is flocked by applying an adhesive to it, supporting it on a first side while applying fibers to the second side, and then curing the adhesive on most of the second side by directing a low energy electron beam at it that does no... | 12/09/1980 |
| 4222806 | Method of covering tennis balls The disclosure is of a method of adhering a textile tennis ball cover to a tennis ball core. The method comprises providing a core and a textile tennis ball cover for the core. A hot-melt adhesive is also provided as a structural component of the cover ma... | 09/16/1980 |
| 4151029 | Method of making tennis balls A method of making hollow playballs, particularly tennis balls, having a fiberous e.g. fabric layer, and a flexible polymeric layer in the wall of the ball. The method involves forming laminate blanks of the fiberous material and polymer, edge-joining one... | 04/24/1979 |
| 4145045 | Pressureless tennis ball A pressureless tennis ball based on an elastomeric composition including natural rubber, cis 1,4-polybutadiene, and a copolymer of ethylene and at least one unsaturated monocarboxylic acid containing from three to eight carbon atoms, said copolymer contai... | 03/20/1979 |
