Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 8123638 | High bounce structure: sky ball A play ball having a high bounce capacity of at least 20 vertical feet and as much as 50 or 75 vertical feet is formed of a solid, elastomer thermoplastic polyurethane having a wall thickness of 3-5 mm, containing gas at a pressure preferably greater than 0.65 kfg/c... | 02/28/2012 |
| 8123639 | Carboxylated acrylonitrile butadiene latex seamless bladder and a process for manufacturing thereof A soft seamless acrylonitrile bladder having excellent air permeability combined with good bounce characteristics for inflatable balls obtained by latex dipping process. The said process involves dipping hot molds in a coagulant bath of calcium nitrate and water and... | 02/28/2012 |
| 7247107 | Impact-absorbing lacrosse ball A lacrosse ball that meets generally accepted rules on the construction of lacrosse balls (e.g., size, weight, and bounce height), but provides a more impact-absorbing surface than conventional lacrosse balls. One embodiment provides a lacrosse ball including a shel... | 07/24/2007 |
| 6949276 | Bladder shell for inflatable balls A bladder shell for inflatable balls having a layer of blended synthetic latex and natural rubber latex compounded with an anti-oxidant, an activator, an accelerator, a thickening agent, a wetting agent, and a stabilizer etc. to form a low air permeability and high ... | 09/27/2005 |
| 6620472 | Laminated resilient flexible barrier membranes The present invention relates to laminated membranes formed by multi-layer processing techniques including alternating layers of thermoplastic urethane and a copolymer of ethylene and vinyl alcohol. The membranes are characterized in that hydrogen bonds a... | 09/16/2003 |
| 6544608 | Bladder shell for inflatable balls A bladder shell for inflatable balls having at least a pair of layers of compounded synthetic latex and compounded natural rubber latex or at least a layer of blended synthetic latex and natural rubber latex compounded with anti-oxidant, activators, accel... | 04/08/2003 |
| 6402647 | Kick-strengthening soccer practice ball, and production and training A kick-strengthening practice soccer ball is given a little extra weight but preferably softened also for enhance shock absorption when kicked. The practice ball has an inflatable bladder, a carcass of tough durable material, and an intermediary sheath of... | 06/11/2002 |
| 6290619 | Ball for use in off-ice hockey training on the street The present invention is a street hockey ball for use in games on hard surfaces. The ball has a core of a low rebound material, and a hard, tough covering material. This invention provides for the height of contact between the ball and the stick to approx... | 09/18/2001 |
| 6142897 | Smooth basketball A basketball includes an inflatable bladder and a cover that surrounds the bladder. An outer surface of the basketball is substantially smooth, devoid of any seams, lines, stitching, raised or indented surface indicia, corrugation, stippling, or other sur... | 11/07/2000 |
| 6109998 | Squeezable plaything resembling animal-like or humanoid figure A squeezable plaything which resembles an animal-like or humanoid figure having appendages projecting therefrom. The plaything includes a hollow core molded of resilient plastic material shaped to resemble the figure and provided with an orifice which ren... | 08/29/2000 |
| 5936190 | Precision shooting aerodynamic non-spherical safety-oriented projectile An improved, precision shooting, safety oriented, high speed projectile (10) comprising a non-toxic, soft, hollow, capsule (12) formed of a plurality of portions joined together at at least one seam line (14), said seam line (14) being the weakest point o... | 08/10/1999 |
| 5711729 | Ball and methods for making the same A ball has a core formed from a sponged and vulcanized mixture of rubber and cork. Methods for making a ball and a ball core are also described.... | 01/27/1998 |
| 5639085 | Light weight, soft feel hand ball A ball comprising a hollow sphere which has an inner diameter of about 1.23 inches and an outer diameter of about 1.88 inches and a thickness of about 0.325 inches. The sphere is fabricated of an elastomeric material weighing between about 50 and 60 grams... | 06/17/1997 |
| 5639526 | Paint ball A paint ball including a paint ball shell and an axis extending through the shell to define first and second poles. The paint ball shell fractures in a predetermined pattern upon the receipt of a fracturing force to form fracture lines from the point of i... | 06/17/1997 |
| 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 |
| 5577723 | Squeezable toy ball A squeezable toy ball which simulates a human organ such as the intestine, the ball when squeezed and released then generating a gurgling sound similar to that produced by a functioning intestine. The ball comprises a generally spherical outer shell forme... | 11/26/1996 |
| 5556342 | Ball having surface indentations for games of bowls and processes for obtaining such a ball Bowl for games such as petanque, including an outer surface (2) composed of a base surface (4) with prominent patterns (3, 103), regularly distributed on at least 90% of the total base surface (4). The total surface occupied by said patterns (3, 103) on t... | 09/17/1996 |
| 5035425 | Multiple purpose play ball A novelty ball is disclosed which is formed from a spherical shell of high density elastomeric polyurethane polymer. The polyurethane shell has a wall thickness sufficient to return the shell to its original shape following deformation. In one embodiment,... | 07/30/1991 |
| 4991841 | Novelty ball The invention is a hollow novelty ball having a multiplicity of extending flexible whisker-like protrusions. The whiskers are generally within the range of about 0.5 to 2.5 times the diameter of the ball. Materials of construction may vary but for a small... | 02/12/1991 |
| 4684137 | Simulated war game weapon A weapon for use in simulated war games, such weapon being particularly usable in situations where targets or opposing pesonnel are out of a direct line of sight or where weapon use in a conventional manner would be otherwise dangerous and should be avoid... | 08/04/1987 |
| 4596389 | Tennis ball A tennis ball whose weight is preferably equal to the weight of a conventional or regulation tennis ball and whose diameter is from about 2.800 inches to about 3.500 inches, the ball thus being larger in diameter than a conventional ball so as to encounte... | 06/24/1986 |
| 4358111 | Pressurized, non-refillable recreation ball inflated with sulfur hexafluoride A pressurized, non-refillable recreation ball inflated with a mixture of sulfur hexafluoride and air for improved shelf life and pressure retention is obtained by filling the ball with sulfur hexafluoride in a range of 65% to 75% by volume and 35% to 25% ... | 11/09/1982 |
| 4305583 | Play ball The invention relates to playballs, e.g. tennis balls, having a core pressurized with a low permeability gas, e.g. sulphur hexafluoride. Use of such gases can cause the ball to emit a pinging noise on bouncing. The invention provides a core (1) pressurize... | 12/15/1981 |
| 4258917 | Rotocasting process for producing rubbery reinforced articles A process is provided for making reinforced rubbery sport and play balls by rotational casting, in a mold lined with a nonwoven fabric, a liquid polymer composition containing an epoxy resin, a liquid carboxyl-terminated polymer, an amine, a dihydric comp... | 03/31/1981 |
| 4238537 | Process for rotational molding utilizing EVA and products produced therefrom A rotationally molded hollow article and a process for molding such an article, wherein the article is formed of a mixture of plastic pellets and powder both of which are copolymers of ethylene and vinyl acetate, having a predetermined range of pellet to ... | 12/09/1980 |
| 4191375 | Game ball and method of making same A game ball having an inner bladder and a layer of yarn wound thereabout. The yarn layer is formed by a first strand of synthetic material and a second strand of natural material. As these strands are being simultaneously wound on the inner bladder, an ad... | 03/04/1980 |
| 4119592 | Rubbery bladders from epoxy compositions Rubbery bladders are produced by rotational casting a liquid polymer composition containing (1) an epoxy resin, (2) a liquid carboxyl-terminated polymer, (3) an amine, (4) a dihydric compound, and (5) a plasticizer. In order to obtain the desired flex and... | 10/10/1978 |
| 4098504 | Tennis ball A pressurized game ball including an air-permeable elastomeric wall defining a cavity containing a compressible inflation gas with the improvement being that the inflation gas includes predetermined mixed amounts of air and sulfur hexafluoride (SF6 | 07/04/1978 |
| 4070434 | Method of manufacturing hollow plastic ball A method of manufacturing a hollow polyvinyl chloride resin ball. An inflating valve contained in the ball body is made of a plastisol composed mainly of polyethylene-vinyl acetate copolymer and acrylonitrile copolymer. The inflating valve prevents wideni... | 01/24/1978 |
