US20140080643A1 - Leak-free american football - Google Patents
Leak-free american football Download PDFInfo
- Publication number
- US20140080643A1 US20140080643A1 US13/788,084 US201313788084A US2014080643A1 US 20140080643 A1 US20140080643 A1 US 20140080643A1 US 201313788084 A US201313788084 A US 201313788084A US 2014080643 A1 US2014080643 A1 US 2014080643A1
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- US
- United States
- Prior art keywords
- leak
- american football
- section
- polyurethane foam
- covering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/02—Special cores
- A63B37/06—Elastic cores
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B43/00—Balls with special arrangements
- A63B43/002—Balls with special arrangements with special configuration, e.g. non-spherical
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2209/00—Characteristics of used materials
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2209/00—Characteristics of used materials
- A63B2209/14—Characteristics of used materials with form or shape memory materials
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2243/00—Specific ball sports not provided for in A63B2102/00 - A63B2102/38
- A63B2243/0066—Rugby; American football
- A63B2243/007—American football
Definitions
- the present invention relates to a leak-free American football, and more particularly to a leak-free American football filled with a polyurethane foam.
- an inflatable sports ball such as an American football, typically comprises a covering 31 , an adhesion layer 32 , an outer rubber covering 33 , a yarn layer 34 , an inner bladder 35 , a pair of lacing holes 36 , a seam 37 and a lace 38 .
- the covering 31 is adhered onto an exterior surface of the outer rubber covering 33 by the adhesion layer 32 . Since the inner bladder 35 is formed with an internal space A for pumping gas into the sports ball, the conventional sports ball can be enlarged or shrunk by inflation or deflation.
- the conventional inflatable sports ball there are several disadvantages for the conventional inflatable sports ball. For instance, sufficient gas is required to sustain the shape and the size of the sports ball. If the pressure in the inner bladder is varied, the conventional sports ball may lose the desired size, shape and bounce. The touch and elasticity thus cannot be kept steady, such that the players can hardly handle the sports ball.
- the inflatable sports ball is pierced by a needle or any sharp-pointed object, the gas pumped in the sports ball will be leaked out and the sports ball is deformed. As a result, the sports ball is broken and cannot bounce normally.
- the present invention provides a leak-free American Football filled with a polyurethane foam to mitigate or obviate the aforementioned problems.
- a primary objective of the present invention is to provide a leak-free American football having enhanced stability and durability to overcome the drawbacks of a conventional inflatable American football.
- the leak-free American football of the present invention has a polyurethane foam (PU foam) having a shape of an American football; a covering formed on an exterior surface of the polyurethane foam and having a seam; multiple pairs of lacing holes, each pair of the lacing holes formed in the covering respectively along two opposite sides of the seam, and a lace passing through the multiple pairs of the lacing holes to close the seam, such that the polyurethane foam is covered by the covering and the lace.
- PU foam polyurethane foam
- the polyurethane foam has elasticity and a density ranging from 85 kg/m 3 to 200 kg/m 3 for sustaining the leak-free American Football's desired bounce. Accordingly, the drawbacks resulted from pressure variation and reliance on inflation are overcome. More preferably, the polyurethane foam has a density ranging from 85 kg/m 3 to 105 kg/m 3 .
- the polyurethane foam of the leak-free American football has a hardness ranging from 40 Shore A to 70 Shore A.
- the leak-free American football in accordance with the present invention has a weight, elasticity, softness, and touch same with or close to those of the conventional inflatable American football.
- the covering has a thickness ranging from 0.6 to 3.0 millimeters.
- the covering includes a first section formed on the exterior surface and a second section formed on the exterior surface and adjacent to the first section, the seam is formed between the first section and the second section, a part of the lacing holes are formed in the first section along one of the two opposite sides of the seam, and the other lacing holes paired with said part of the lacing holes are formed in the second section along the other side of the seam, and positions of the lacing holes formed in the first section correspond to positions of the lacing holes formed in the second section.
- the lace has two ends opposite to each other and a lacing body formed between the ends, the lacing body of the lace passes through the multiple pairs of the lacing holes, and the ends of the lace are inserted into the seam and between the lacing body of the lace and the polyurethane foam.
- the lace can be used to close the seam and sustain a desired tightness of the leak-free American football.
- the lace is used for improving gripping and passing of the leak-free American football during playing.
- the leak-free American football can further have a pattern on the covering.
- the shapes of the leak-free American football and the polyurethane foam are substantially prolate spheroidal.
- the covering of the leak-free American football can be made of polyvinyl chloride leather, polyurethane leather, microfiber leather or cow leather.
- the polyurethane foam is made in an integral configuration and is directly covered by the covering and the lace.
- the covering is adhered to the exterior surface of the polyurethane foam with an adhesion agent.
- An adhesion layer is formed between the polyurethane foam and the covering.
- FIG. 1 is a perspective view of a leak-free American football in accordance with the present invention.
- FIG. 2 is a sectional view of the leak-free American football with polyurethane foam in accordance with the present invention.
- FIG. 3 is a sectional view of a conventional inflatable American football in accordance with the prior art.
- the raw material used for manufacturing the polyurethane foam of the leak-free American football in accordance with the present invention comprises, for example, but not limited to:
- the method for manufacturing the leak-free American football in accordance with the present invention was implemented as follows. In one embodiment of the present invention, a leak-free American football was manufactured.
- the main material was mixed with the aforementioned additive materials to obtain a pre-mixture.
- the weight ratio of polyurethane to isocyanate was 100:68, the molecular weight of the polyurethane ranged from 3000 to 12000 g/mole, and the respective amount of each additive material ranged from 0.001 to 25 kilograms per 100 kilograms of the main material.
- a mold with a shape of an American football i.e. prolate spheroid
- a commercially available release reagent was applied to the inner surface of the cleaned mold, and then the cleaned mold was pre-heated to 50° C. for molding.
- the pre-mixture was injected into a foam dispensing equipment with a flux of 100 grams/second for about 3-4 seconds. Subsequently, the pre-mixture was further supplied into the aforementioned pre-heated mold, and cured in the mold for 4-6 minutes. After a polyurethane foam was injection molded, the polyurethane foam with a corresponding shape was released from the mold to produce a polyurethane foam of the leak-free American football.
- a covering made of polyurethane leather was provided and further printed with a trademark or logo thereon.
- Said covering comprises a first section, a second section, a third section and a fourth section.
- the first section and the second section were formed with multiple pairs of lacing holes near their edges.
- Glue was applied to an exterior surface of the polyurethane foam and interior surfaces of the aforementioned sections to respectively adhere the first, second, third and fourth sections onto the exterior surface of the polyurethane foam, such that an adhesion layer was formed between the covering and the polyurethane foam.
- Said first section and second section were disposed adjacent to each other, and the lacing holes formed in the first section were also arranged along the lacing holes formed in the second section. After adhering the aforementioned sections onto the polyurethane foam, a seam was formed between the first section and the second section.
- Two leak-free American footballs in Examples 1 and 2 were manufactured by the method as described in aforementioned Preparation Example. Both of the two leak-free American footballs have a similar structure as described below, and the difference between them is their sizes.
- the leak-free American football 1 in accordance with the present invention is prolate spheroidal in shape.
- Said leak-free American football has a polyurethane foam 11 , an adhesion layer 12 , a covering 13 , multiple pairs of lacing holes 14 and a lace 15 .
- the covering 13 is adhered onto an exterior surface of the polyurethane foam 11 by the adhesion layer 12 and has a first section 131 , a second section 132 , a third section 133 and a fourth section 134 .
- Said first section 131 is disposed adjacent to the second section 132 , and a seam 16 is formed between the first section 131 and the second section 132 .
- the multiple pairs of the lacing holes 14 are formed near the seam 16 and classified into two parts according to their locations.
- One of the two parts of the lacing holes 141 are formed in the first section 131 of the covering 13
- the other lacing holes 142 which are respectively paired with said part of the lacing holes 141 , are formed in the second section 132 of the covering 13 .
- the lacing holes 141 formed in the first section 131 are located at positions corresponding to those of the lacing holes 142 formed in the second section 132 .
- the lace 15 has two ends opposite to each other and a lacing body formed between the ends.
- the lacing body passes through the multiple pairs of the lacing holes 141 , 142 , and the ends of the lace 15 are inserted into the seam 16 and between the lacing body of the lace 15 and the polyurethane foam 11 to close the seam 16 and sustain a desired tightness of the leak-free American football. Accordingly, the polyurethane foam 11 is covered by the covering 13 and the lace 15 .
- the long circumferences (measured across the lace), long circumferences (measured without the lace), short circumferences, the heights, the weights, and the hardness and the densities of the leak-free American footballs in Example 1 and 2 are measured and listed on Table 1.
- the official standard size of a conventional inflatable American football and characteristics are also listed in Table 1 for comparison.
- a leak-free American football 1 enclosed with a solid and elastic polyurethane foam 11 of the present invention has a weight and a density close to those of the conventional inflatable American football.
- the integral polyurethane foam 11 of the present invention replaces an inner bladder, a yarn layer and an outer rubber covering of a conventional inflatable American football to be the core portion of the leak-free American football. Since the polyurethane foam 11 filled in the leak-free American football 1 is solid and elastic, it can sustain a desired size, shape and bounce of the leak-free American football without the need for inflation, and successfully overcome the problems including leakage or deformation. Consequently, the stability and the durability of the leak-free American football 1 of the present invention are significantly enhanced.
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Tires In General (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
Provided is a leak-free American football, which has a polyurethane foam having a shape of an American football; a covering formed on an exterior surface of the polyurethane foam and having a seam; multiple pairs of lacing holes formed in the covering along two opposite sides of the seam, and a lace passing through the multiple pairs of the lacing holes to close the seam, such that the polyurethane foam is covered by the covering and the lace. Since the polyurethane foam is solid and elastic, the leak-free American football can maintain a desired size, shape and bounce without the need for inflation, thereby improving the stability and durability.
Description
- Pursuant to 35 U.S.C. §119(a), this application claims the benefit of the priority to China Patent Application No. 201220472209.4, filed Sep. 17, 2012. The content of the prior application is incorporated herein by its entirety.
- 1. Field of the Invention
- The present invention relates to a leak-free American football, and more particularly to a leak-free American football filled with a polyurethane foam.
- 2. Description of the Prior Arts
- With reference to
FIG. 3 , an inflatable sports ball, such as an American football, typically comprises a covering 31, anadhesion layer 32, an outer rubber covering 33, ayarn layer 34, aninner bladder 35, a pair oflacing holes 36, aseam 37 and alace 38. The covering 31 is adhered onto an exterior surface of the outer rubber covering 33 by theadhesion layer 32. Since theinner bladder 35 is formed with an internal space A for pumping gas into the sports ball, the conventional sports ball can be enlarged or shrunk by inflation or deflation. - However, there are several disadvantages for the conventional inflatable sports ball. For instance, sufficient gas is required to sustain the shape and the size of the sports ball. If the pressure in the inner bladder is varied, the conventional sports ball may lose the desired size, shape and bounce. The touch and elasticity thus cannot be kept steady, such that the players can hardly handle the sports ball.
- Moreover, if the inflatable sports ball is pierced by a needle or any sharp-pointed object, the gas pumped in the sports ball will be leaked out and the sports ball is deformed. As a result, the sports ball is broken and cannot bounce normally.
- To overcome the aforementioned shortcomings, the present invention provides a leak-free American Football filled with a polyurethane foam to mitigate or obviate the aforementioned problems.
- A primary objective of the present invention is to provide a leak-free American football having enhanced stability and durability to overcome the drawbacks of a conventional inflatable American football.
- To achieve the objective, the leak-free American football of the present invention has a polyurethane foam (PU foam) having a shape of an American football; a covering formed on an exterior surface of the polyurethane foam and having a seam; multiple pairs of lacing holes, each pair of the lacing holes formed in the covering respectively along two opposite sides of the seam, and a lace passing through the multiple pairs of the lacing holes to close the seam, such that the polyurethane foam is covered by the covering and the lace.
- Preferably, the polyurethane foam has elasticity and a density ranging from 85 kg/m3 to 200 kg/m3 for sustaining the leak-free American Football's desired bounce. Accordingly, the drawbacks resulted from pressure variation and reliance on inflation are overcome. More preferably, the polyurethane foam has a density ranging from 85 kg/m3 to 105 kg/m3.
- Preferably, the polyurethane foam of the leak-free American football has a hardness ranging from 40 Shore A to 70 Shore A.
- Accordingly, based on a same size, the leak-free American football in accordance with the present invention has a weight, elasticity, softness, and touch same with or close to those of the conventional inflatable American football.
- Preferably, the covering has a thickness ranging from 0.6 to 3.0 millimeters.
- Preferably, the covering includes a first section formed on the exterior surface and a second section formed on the exterior surface and adjacent to the first section, the seam is formed between the first section and the second section, a part of the lacing holes are formed in the first section along one of the two opposite sides of the seam, and the other lacing holes paired with said part of the lacing holes are formed in the second section along the other side of the seam, and positions of the lacing holes formed in the first section correspond to positions of the lacing holes formed in the second section.
- Preferably, the lace has two ends opposite to each other and a lacing body formed between the ends, the lacing body of the lace passes through the multiple pairs of the lacing holes, and the ends of the lace are inserted into the seam and between the lacing body of the lace and the polyurethane foam. Accordingly, the lace can be used to close the seam and sustain a desired tightness of the leak-free American football. Furthermore, the lace is used for improving gripping and passing of the leak-free American football during playing.
- Preferably, the leak-free American football can further have a pattern on the covering.
- Preferably, the shapes of the leak-free American football and the polyurethane foam are substantially prolate spheroidal.
- Preferably, the covering of the leak-free American football can be made of polyvinyl chloride leather, polyurethane leather, microfiber leather or cow leather.
- Preferably, the polyurethane foam is made in an integral configuration and is directly covered by the covering and the lace.
- Preferably, the covering is adhered to the exterior surface of the polyurethane foam with an adhesion agent. An adhesion layer is formed between the polyurethane foam and the covering.
- Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
-
FIG. 1 is a perspective view of a leak-free American football in accordance with the present invention. -
FIG. 2 is a sectional view of the leak-free American football with polyurethane foam in accordance with the present invention. -
FIG. 3 is a sectional view of a conventional inflatable American football in accordance with the prior art. - Hereinafter, one skilled in the arts can easily realize the advantages and effects of the present invention from the following embodiments. The descriptions proposed herein are just preferable embodiments for the purpose of illustrations only, not intended to limit the scope of the invention. Various modifications and variations could be made in order to practice or apply the present invention without departing from the spirit and scope of the invention.
- Preparation Example
- The raw material used for manufacturing the polyurethane foam of the leak-free American football in accordance with the present invention comprises, for example, but not limited to:
-
- (1) main materials:
- i. polyurethane; and
- ii. isocyanate.
- (2) additive material:
- i. cross linking reagent:
- ethylene glycol, diethanol amine or dipropylene glycol;
- ii. foaming agent:
- tannous octanoate or water;
- iii. stabilizing reagent:
- silicone oil;
- iv. catalysts:
- butanediol amine or N,N-dimethylethanol amine; and
- v. solvent:
- water or methylene chloride (MC).
- i. cross linking reagent:
- (1) main materials:
- The method for manufacturing the leak-free American football in accordance with the present invention was implemented as follows. In one embodiment of the present invention, a leak-free American football was manufactured.
- First, the main material was mixed with the aforementioned additive materials to obtain a pre-mixture. According to the present embodiment, the weight ratio of polyurethane to isocyanate was 100:68, the molecular weight of the polyurethane ranged from 3000 to 12000 g/mole, and the respective amount of each additive material ranged from 0.001 to 25 kilograms per 100 kilograms of the main material.
- Before injection molding, a mold with a shape of an American football (i.e. prolate spheroid) was provided and cleaned. A commercially available release reagent was applied to the inner surface of the cleaned mold, and then the cleaned mold was pre-heated to 50° C. for molding.
- Next, the pre-mixture was injected into a foam dispensing equipment with a flux of 100 grams/second for about 3-4 seconds. Subsequently, the pre-mixture was further supplied into the aforementioned pre-heated mold, and cured in the mold for 4-6 minutes. After a polyurethane foam was injection molded, the polyurethane foam with a corresponding shape was released from the mold to produce a polyurethane foam of the leak-free American football.
- Subsequently, a covering made of polyurethane leather was provided and further printed with a trademark or logo thereon. Said covering comprises a first section, a second section, a third section and a fourth section. The first section and the second section were formed with multiple pairs of lacing holes near their edges. Glue was applied to an exterior surface of the polyurethane foam and interior surfaces of the aforementioned sections to respectively adhere the first, second, third and fourth sections onto the exterior surface of the polyurethane foam, such that an adhesion layer was formed between the covering and the polyurethane foam. Said first section and second section were disposed adjacent to each other, and the lacing holes formed in the first section were also arranged along the lacing holes formed in the second section. After adhering the aforementioned sections onto the polyurethane foam, a seam was formed between the first section and the second section.
- Then, a lace was passed through the multiple pairs of the lacing holes to close the seam. Accordingly, a leak-free American football was manufactured.
- Two leak-free American footballs in Examples 1 and 2 were manufactured by the method as described in aforementioned Preparation Example. Both of the two leak-free American footballs have a similar structure as described below, and the difference between them is their sizes.
- With reference to
FIGS. 1 and 2 , the leak-freeAmerican football 1 in accordance with the present invention is prolate spheroidal in shape. Said leak-free American football has apolyurethane foam 11, anadhesion layer 12, a covering 13, multiple pairs of lacing holes 14 and alace 15. - The covering 13 is adhered onto an exterior surface of the
polyurethane foam 11 by theadhesion layer 12 and has afirst section 131, asecond section 132, athird section 133 and afourth section 134. Saidfirst section 131 is disposed adjacent to thesecond section 132, and aseam 16 is formed between thefirst section 131 and thesecond section 132. - The multiple pairs of the lacing holes 14 are formed near the
seam 16 and classified into two parts according to their locations. One of the two parts of the lacing holes 141 are formed in thefirst section 131 of the covering 13, and the other lacingholes 142, which are respectively paired with said part of the lacing holes 141, are formed in thesecond section 132 of thecovering 13. The lacing holes 141 formed in thefirst section 131 are located at positions corresponding to those of the lacing holes 142 formed in thesecond section 132. - The
lace 15 has two ends opposite to each other and a lacing body formed between the ends. The lacing body passes through the multiple pairs of the lacing holes 141, 142, and the ends of thelace 15 are inserted into theseam 16 and between the lacing body of thelace 15 and thepolyurethane foam 11 to close theseam 16 and sustain a desired tightness of the leak-free American football. Accordingly, thepolyurethane foam 11 is covered by the covering 13 and thelace 15. - Hereinafter, the long circumferences (measured across the lace), long circumferences (measured without the lace), short circumferences, the heights, the weights, and the hardness and the densities of the leak-free American footballs in Example 1 and 2 are measured and listed on Table 1. The official standard size of a conventional inflatable American football and characteristics are also listed in Table 1 for comparison.
-
TABLE 1 characteristics of the leak-free American footballs in Examples 1 and 2 and the conventional inflatable American football. Leak-free Leak-free conventional inflatable American American American football with football in football in Official Standard Size Example 1 Example 2 long 705-717 mm 712 mm 710 mm circumference (measured across lace) long 701-709 mm 704 mm 701 mm circumference (measured without across lace) short 524-531 mm 529 mm 530 mm circumference Height 278-285 mm 283 mm 282 mm Weight 397-425 grams 423 grams 422.5 grams Hardness 63 Shore A 55 Shore A 55 Shore A Density 85 kg/m3 105 kg/m3 85 kg/m3 105 kg/m3 - As shown in Table 1, based on a same size, a leak-free
American football 1 enclosed with a solid andelastic polyurethane foam 11 of the present invention has a weight and a density close to those of the conventional inflatable American football. The results demonstrated that both the leak-freeAmerican footballs 1 in Examples 1 and 2 can meet the requirements of the size, weight and density based on the Official Standard American football. - In summary, the
integral polyurethane foam 11 of the present invention replaces an inner bladder, a yarn layer and an outer rubber covering of a conventional inflatable American football to be the core portion of the leak-free American football. Since thepolyurethane foam 11 filled in the leak-freeAmerican football 1 is solid and elastic, it can sustain a desired size, shape and bounce of the leak-free American football without the need for inflation, and successfully overcome the problems including leakage or deformation. Consequently, the stability and the durability of the leak-freeAmerican football 1 of the present invention are significantly enhanced. - Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and features of the invention, the disclosure is illustrative only. Changes may be made in the details, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Claims (20)
1. A leak-free American football, having:
a polyurethane foam having a shape of an American football;
a covering formed on an exterior surface of the polyurethane foam and having a seam;
multiple pairs of lacing holes, each pair of the lacing holes formed in the covering respectively along two opposite sides of the seam, and
a lace passing through the multiple pairs of the lacing holes to close the seam, such that the polyurethane foam is covered by the covering and the lace.
2. The leak-free American football as claimed in claim 1 , wherein the polyurethane foam has a density ranging from 85 kg/m3 to 200 kg/m3.
3. The leak-free American football as claimed in claim 2 , wherein the polyurethane foam has a density ranging from 85 kg/m3 to 105 kg/m3.
4. The leak-free American football as claimed in claim 1 , wherein the polyurethane foam has a hardness ranging from 40 Shore A to 70 Shore A.
5. The leak-free American football as claimed in claim 2 , wherein the polyurethane foam has a hardness ranging from 40 Shore A to 70 Shore A.
6. The leak-free American football as claimed in claim 3 , wherein the polyurethane foam has a hardness ranging from 40 Shore A to 70 Shore A.
7. The leak-free American football as claimed in claim 1 , wherein the covering has a thickness ranging from 0.6 to 3.0 millimeters.
8. The leak-free American football as claimed in claim 3 , wherein the covering has a thickness ranging from 0.6 to 3.0 millimeters.
9. The leak-free American football as claimed in claim 4 , wherein the covering has a thickness ranging from 0.6 to 3.0 millimeters.
10. The leak-free American football as claimed in claim 1 , wherein the shape of the American football is substantially prolate spheroidal.
11. The leak-free American football as claimed in claim 1 , wherein the covering is made of polyvinyl chloride leather, polyurethane leather, microfiber leather or cow leather.
12. The leak-free American football as claimed in claim 1 , wherein an adhesion layer is formed between the covering and the polyurethane foam for adhering the covering onto the exterior surface of the polyurethane foam.
13. The leak-free American football as claimed in claim 1 , wherein the covering includes a first section formed on the exterior surface and a second section formed on the exterior surface and adjacent to the first section, the seam is formed between the first section and the second section, a part of the lacing holes are formed in the first section along one of the two opposite sides of the seam, and the other lacing holes paired with said part of the lacing holes are formed in the second section along the other side of the seam, and positions of the lacing holes formed in the first section correspond to positions of the lacing holes formed in the second section.
14. The leak-free American football as claimed in claim 13 , wherein the lace has two ends opposite to each other and a lacing body formed between the ends, the lacing body of the lace passes through the multiple pairs of the lacing holes, and the ends of the lace are inserted into the seam and between the lacing body of the lace and the polyurethane foam.
15. The leak-free American football as claimed in claim 1 , wherein the leak-free American football has a pattern on the covering.
16. The leak-free American football as claimed in claim 6 , wherein the shape of the American football is substantially prolate spheroidal.
17. The leak-free American football as claimed in claim 15 , wherein the covering is made of polyvinyl chloride leather, polyurethane leather, microfiber leather or cow leather.
18. The leak-free American football as claimed in claim 16 , wherein the covering includes a first section formed on the exterior surface and a second section formed on the exterior surface and adjacent to the first section, the seam is formed between the first section and the second section, a part of the lacing holes are formed in the first section along one of the two opposite sides of the seam, and the other lacing holes paired with said part of the lacing holes are formed in the second section along the other side of the seam, and positions of the lacing holes formed in the first section correspond to positions of the lacing holes formed in the second section.
19. The leak-free American football as claimed in claim 18 , wherein the lace has two ends opposite to each other and a lacing body formed between the ends, the lacing body of the lace passes through the multiple pairs of the lacing holes, and the ends of the lace are inserted into the seam and between the lacing body of the lace and the polyurethane foam.
20. The leak-free American football as claimed in claim 19 , wherein an adhesion layer is formed between the covering and the polyurethane foam for adhering the covering onto the exterior surface of the polyurethane foam.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN201220472209.4 | 2012-09-17 | ||
CN2012204722094U CN202983088U (en) | 2012-09-17 | 2012-09-17 | Novel skin-pasted rugby |
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US20140080643A1 true US20140080643A1 (en) | 2014-03-20 |
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US13/788,084 Abandoned US20140080643A1 (en) | 2012-09-17 | 2013-03-07 | Leak-free american football |
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US20140087900A1 (en) * | 2011-03-25 | 2014-03-27 | Chun-Nan Lin | Type two-layer leak-proof ball and manufacturing method thereof |
US20140274504A1 (en) * | 2013-03-14 | 2014-09-18 | Russell Brands, Llc | Inflation-Independent Ball with Cover |
US11325010B2 (en) | 2016-08-17 | 2022-05-10 | Fowling Enterprises, Llc | System and method for playing a pin based game using an impact resistant ball and process of forming the same |
US11878218B1 (en) * | 2022-09-06 | 2024-01-23 | Azorean Fl, Unipessoal Lda | Ball having a tapered profile and integrated tunnel |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN105031873A (en) * | 2015-08-06 | 2015-11-11 | 泰山体育产业集团有限公司 | Novel jump platform |
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US20080051233A1 (en) * | 2004-09-07 | 2008-02-28 | Callaway Golf Company | Game balls with cover containing post crosslinkable thermoplastic polyurethane and method of making same |
US7470203B1 (en) * | 2004-10-25 | 2008-12-30 | Acorn Products, Llc | Enhanced-grip play balls and methods of manufacture |
US7980971B2 (en) * | 2006-08-08 | 2011-07-19 | Marc Gregory Martino | Self-propelled football with internally ducted fan and electric motor |
US8029393B2 (en) * | 2007-03-07 | 2011-10-04 | Frazier John K | Foam game ball with tubular holes |
US8168026B1 (en) * | 2005-08-04 | 2012-05-01 | Hasbro, Inc. | Elastomeric ball and method of manufacturing same |
-
2012
- 2012-09-17 CN CN2012204722094U patent/CN202983088U/en not_active Expired - Fee Related
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2013
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US4337944A (en) * | 1979-04-12 | 1982-07-06 | Ideas That Sell, Inc. | Lighter and softer recreational balls |
US5228687A (en) * | 1983-01-07 | 1993-07-20 | Meyer/Glass Design | Football with gyroscopic ring |
US4772020A (en) * | 1986-08-15 | 1988-09-20 | Martin Rod G | Helically grooved foamed football |
USRE33449E (en) * | 1986-08-15 | 1990-11-20 | Helically grooved foam football | |
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US4887814A (en) * | 1988-09-22 | 1989-12-19 | Winter Design/Manufacturing, Inc. | Game ball |
US5066012A (en) * | 1991-02-11 | 1991-11-19 | Stark Steven P | Polar lighted ball |
US5133550A (en) * | 1991-07-24 | 1992-07-28 | Mattel, Inc. | Football having raised ribs |
US5269514A (en) * | 1992-06-18 | 1993-12-14 | Adler Alan John | Football with fins |
US5383660A (en) * | 1993-01-19 | 1995-01-24 | Alan J. Adler | Football with improved grip |
US5398928A (en) * | 1993-11-23 | 1995-03-21 | Elliot A. Rudell | Football with tail appendage |
US5647590A (en) * | 1994-11-21 | 1997-07-15 | Lisco, Inc. | Game ball for urban use |
US5683316A (en) * | 1995-11-28 | 1997-11-04 | Campbell; Daniel Scott | Illuminated sports ball |
US5941785A (en) * | 1998-05-12 | 1999-08-24 | Bartels; Mcdonald C. | Football |
US6514164B1 (en) * | 2000-08-09 | 2003-02-04 | Robert E. Parrett | Football apparatus |
US6726580B2 (en) * | 2002-04-19 | 2004-04-27 | Peterson Lloyd E | Football style thrown objects having light sticks |
US20080051233A1 (en) * | 2004-09-07 | 2008-02-28 | Callaway Golf Company | Game balls with cover containing post crosslinkable thermoplastic polyurethane and method of making same |
US7470203B1 (en) * | 2004-10-25 | 2008-12-30 | Acorn Products, Llc | Enhanced-grip play balls and methods of manufacture |
US8168026B1 (en) * | 2005-08-04 | 2012-05-01 | Hasbro, Inc. | Elastomeric ball and method of manufacturing same |
US8454348B2 (en) * | 2005-08-04 | 2013-06-04 | Hasbro, Inc. | Elastomeric ball and method of manufacturing same |
US7980971B2 (en) * | 2006-08-08 | 2011-07-19 | Marc Gregory Martino | Self-propelled football with internally ducted fan and electric motor |
US8029393B2 (en) * | 2007-03-07 | 2011-10-04 | Frazier John K | Foam game ball with tubular holes |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140087900A1 (en) * | 2011-03-25 | 2014-03-27 | Chun-Nan Lin | Type two-layer leak-proof ball and manufacturing method thereof |
US10029154B2 (en) * | 2011-03-25 | 2018-07-24 | Russell Brands, Llc | Type two-layer leak-proof ball and manufacturing method thereof |
US20140274504A1 (en) * | 2013-03-14 | 2014-09-18 | Russell Brands, Llc | Inflation-Independent Ball with Cover |
EP2969067B1 (en) * | 2013-03-14 | 2019-08-28 | Russell Brands, LLC | Inflation-independent ball with cover |
US11325010B2 (en) | 2016-08-17 | 2022-05-10 | Fowling Enterprises, Llc | System and method for playing a pin based game using an impact resistant ball and process of forming the same |
US11878218B1 (en) * | 2022-09-06 | 2024-01-23 | Azorean Fl, Unipessoal Lda | Ball having a tapered profile and integrated tunnel |
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