US20050143205A1 - Softball with great resilient coefficient - Google Patents
Softball with great resilient coefficient Download PDFInfo
- Publication number
- US20050143205A1 US20050143205A1 US10/746,693 US74669303A US2005143205A1 US 20050143205 A1 US20050143205 A1 US 20050143205A1 US 74669303 A US74669303 A US 74669303A US 2005143205 A1 US2005143205 A1 US 2005143205A1
- Authority
- US
- United States
- Prior art keywords
- core
- softball
- inner cover
- type material
- polyurethane
- 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
-
- 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
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2102/00—Application of clubs, bats, rackets or the like to the sporting activity ; particular sports involving the use of balls and clubs, bats, rackets, or the like
- A63B2102/18—Baseball, rounders or similar games
- A63B2102/182—Softball
Definitions
- the present invention relates softballs for softball gaming, and more particularly to a softball that is easy to make and can sustain substantially constant hardness against variations in temperature and humidity and has a great resilient coefficient. Further, by adjusting the ratio of thickness of the core and the inner cover, the softball can attain a higher coefficient of resilience as required.
- a softball of a conventional inner structure includes a core 10 and a cover 20 surrounding the core 10 .
- the core is made by a mold and of a cork-type or a silk-cotton-type material.
- a softball thus made has the disadvantage of having non-uniform hardness over the ball surface.
- a core shell 30 formed by winding yarn strings around the core is applied first.
- the core 10 and the core shell 30 are then surrounded by the cover 20 to form a softball.
- the addition of a core cover 30 complicates the manufacturing process, and it also reduces the coefficient of resilience, leading to a less bouncing softball.
- a softball of another conventional inner structure includes a core 40 and a cover 50 surrounding the core 40 .
- the core 40 is made by a mold and of a polyurethane-type material. Because of the polyurethane-type material, the softball is of uniform hardness and higher coefficient of resilience. Further, the structural simplicity, without a string-wound core shell, makes it is easy to make. However, since the polyurethane-type material is susceptible to variations in temperature and humidity, the hardness of the softball is not constant over a variety of environments.
- the present invention provides a softball having a novel inner structure which is easy to make and can sustain substantially constant hardness against variations in temperature and humidity. Further, by adjusting the ratio of thickness of the core and the inner cover, the softball can meet a required coefficient of resilience.
- a softball according to the present invention comprises a core, an inner cover and an outer cover.
- the core is made by a mold and of either a cork-type material or a polyurethane-type material.
- the inner cover surrounds said core, being made of a material different from the core and selected from the group of a cork-type material and a polyurethane-type material.
- the outer cover surrounds both the core and the inner cover.
- FIG. 1 is a cross-sectional view of a softball of a conventional inner structure.
- FIG. 2 is a cross-sectional view of a softball of another conventional inner structure.
- FIG. 3 is a cross-sectional view of the first preferred embodiment of the present invention as a softball.
- FIG. 4 is a cross-sectional view of the second preferred embodiment of the present invention as a softball.
- the first preferred embodiment of the present invention as a softball comprises a core 60 , an inner cover 80 and an outer cover 70 .
- the core 60 is of substantially spherical shape and is made of a predetermined cork-type material. Further, the core 60 is made by a mold.
- the inner cover 80 surrounds the core 60 , and the inner cover 80 is made of a predetermined polyurethane-type material.
- the outer cover 70 surrounds the core 60 and the inner cover 70 to form a softball.
- the core 60 can also be made of a silk-cotton material instead.
- the second preferred embodiment of the present invention as a softball comprises a core 60 , an inner cover 80 and an outer cover 70 .
- the core 60 is of substantially spherical shape and is made of a predetermined polyurethane-type material. Further, the core 60 is made by a mold.
- the inner cover 80 surrounds the core 60 , and the inner cover 80 is made of a predetermined cork-type material.
- the outer cover 70 surrounds the core 60 and the inner cover 70 to form a softball.
- the inner cover 80 can also be made of a silk-cotton material instead.
- a softball according to the present invention is characterized by a core 60 surrounded by an inner cover 80 .
- the core 60 and the inner cover 80 are respectively made of a cork-type material and a polyurethane material or vice versa.
- those materials are common internal materials of conventional softballs, the combination of those two types of materials makes possible a softball that is easy to make and can sustain substantially constant hardness against variations in temperature and humidity. Further, by adjusting the ratio of thickness of the core and the inner cover, the softball can attain a higher coefficient of resilience as required.
Abstract
A softball associated with the game of softball comprises a core, an inner cover and an outer cover. The core is made by a mold and of either a cork material or a polyurethane material. The inner cover surrounds said core, being made of a material different from the core and selected from the group of a cork-type material and a polyurethane-type material. The outer cover surrounds both the core and the inner cover. The softball thus formed can sustain substantially constant hardness against variations in temperature and humidity. Further, by adjusting the ratio of thickness of the core and the inner cover, the softball can attain a higher coefficient of resilience as required.
Description
- The present invention relates softballs for softball gaming, and more particularly to a softball that is easy to make and can sustain substantially constant hardness against variations in temperature and humidity and has a great resilient coefficient. Further, by adjusting the ratio of thickness of the core and the inner cover, the softball can attain a higher coefficient of resilience as required.
- As shown in
FIG. 1 , a softball of a conventional inner structure includes acore 10 and acover 20 surrounding thecore 10. The core is made by a mold and of a cork-type or a silk-cotton-type material. A softball thus made has the disadvantage of having non-uniform hardness over the ball surface. To remedy this fault, acore shell 30 formed by winding yarn strings around the core is applied first. Thecore 10 and thecore shell 30 are then surrounded by thecover 20 to form a softball. The addition of acore cover 30 complicates the manufacturing process, and it also reduces the coefficient of resilience, leading to a less bouncing softball. - As shown in
FIG. 2 , a softball of another conventional inner structure includes acore 40 and acover 50 surrounding thecore 40. Thecore 40 is made by a mold and of a polyurethane-type material. Because of the polyurethane-type material, the softball is of uniform hardness and higher coefficient of resilience. Further, the structural simplicity, without a string-wound core shell, makes it is easy to make. However, since the polyurethane-type material is susceptible to variations in temperature and humidity, the hardness of the softball is not constant over a variety of environments. - Accordingly, the present invention provides a softball having a novel inner structure which is easy to make and can sustain substantially constant hardness against variations in temperature and humidity. Further, by adjusting the ratio of thickness of the core and the inner cover, the softball can meet a required coefficient of resilience.
- To achieve the above objectives, a softball according to the present invention comprises a core, an inner cover and an outer cover. The core is made by a mold and of either a cork-type material or a polyurethane-type material. The inner cover surrounds said core, being made of a material different from the core and selected from the group of a cork-type material and a polyurethane-type material. The outer cover surrounds both the core and the inner cover. The softball thus formed can sustain substantially constant hardness against variations in temperature and humidity. Further, by adjusting the ratio of thickness of the core and the inner cover, the softball can meet a required coefficient of resilience.
-
FIG. 1 is a cross-sectional view of a softball of a conventional inner structure. -
FIG. 2 is a cross-sectional view of a softball of another conventional inner structure. -
FIG. 3 is a cross-sectional view of the first preferred embodiment of the present invention as a softball. -
FIG. 4 is a cross-sectional view of the second preferred embodiment of the present invention as a softball. - The various objects and advantages of the present invention will be more readily understood from the following detailed description of preferred embodiments, when read in conjunction with the appended drawings.
- As shown in
FIG. 3 , the first preferred embodiment of the present invention as a softball comprises acore 60, aninner cover 80 and anouter cover 70. Thecore 60 is of substantially spherical shape and is made of a predetermined cork-type material. Further, thecore 60 is made by a mold. Theinner cover 80 surrounds thecore 60, and theinner cover 80 is made of a predetermined polyurethane-type material. Theouter cover 70 surrounds thecore 60 and theinner cover 70 to form a softball. Thecore 60 can also be made of a silk-cotton material instead. - As shown in
FIG. 4 , the second preferred embodiment of the present invention as a softball comprises acore 60, aninner cover 80 and anouter cover 70. Thecore 60 is of substantially spherical shape and is made of a predetermined polyurethane-type material. Further, thecore 60 is made by a mold. Theinner cover 80 surrounds thecore 60, and theinner cover 80 is made of a predetermined cork-type material. Theouter cover 70 surrounds thecore 60 and theinner cover 70 to form a softball. Theinner cover 80 can also be made of a silk-cotton material instead. - As indicated by the aforecited preferred embodiments, a softball according to the present invention is characterized by a
core 60 surrounded by aninner cover 80. Thecore 60 and theinner cover 80 are respectively made of a cork-type material and a polyurethane material or vice versa. Although those materials are common internal materials of conventional softballs, the combination of those two types of materials makes possible a softball that is easy to make and can sustain substantially constant hardness against variations in temperature and humidity. Further, by adjusting the ratio of thickness of the core and the inner cover, the softball can attain a higher coefficient of resilience as required. - The present invention is thus described, and it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the present invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.
Claims (5)
1. A softball with a great resilient coefficient, comprising:
a spherical core made of a predetermined cork material, said core being made by a mold;
an inner cover surrounding said core, said inner cover being made of a polyurethane material; and
an outer cover surrounding said core and said inner cover.
2. A softball with a great resilient coefficient, comprising:
a spherical core made of a predetermined cork material, said core being made by a mold;
an inner cover surrounding said core, said inner cover being made of silk cotton; and
an outer cover surrounding said core and said inner cover.
3. A softball with a great resilient coefficient, comprising:
a spherical core made of polyurethane material, said core being made by a mold;
an inner cover surrounding said core; and
an outer cover surrounding said core and said inner cover.
4. The softball with a great resilient coefficient as claimed in claim 1 , wherein, said inner cover being made of cork material.
5. The softball with a great resilient coefficient as claimed in claim 1 , wherein, said inner cover being made of silk cotton.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/746,693 US20050143205A1 (en) | 2003-12-29 | 2003-12-29 | Softball with great resilient coefficient |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/746,693 US20050143205A1 (en) | 2003-12-29 | 2003-12-29 | Softball with great resilient coefficient |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050143205A1 true US20050143205A1 (en) | 2005-06-30 |
Family
ID=34700666
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/746,693 Abandoned US20050143205A1 (en) | 2003-12-29 | 2003-12-29 | Softball with great resilient coefficient |
Country Status (1)
Country | Link |
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US (1) | US20050143205A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140182758A1 (en) * | 2012-07-23 | 2014-07-03 | Kouichi Sakakibara | Anti-skid device for tires |
US20180008868A1 (en) * | 2015-01-22 | 2018-01-11 | Swax Lax Llc | Sports training ball and method of manufacturing a sports training ball |
US20180064999A1 (en) * | 2016-09-07 | 2018-03-08 | Swax Lax Llc | Sports training ball with enhanced gripping surface |
US20210283468A1 (en) * | 2020-03-12 | 2021-09-16 | Swax Lax Llc | Sports training ball having embossed design |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US932911A (en) * | 1909-02-05 | 1909-08-31 | Benjamin F Shibe | Base-ball. |
US1530410A (en) * | 1924-09-03 | 1925-03-17 | A J Reach Co | Method of manufacturing baseball centers |
US1624822A (en) * | 1924-10-30 | 1927-04-12 | Beldam George William | Cricket, hockey, and like ball |
US3976295A (en) * | 1974-07-10 | 1976-08-24 | Lannom Manufacturing Company, Inc. | Game ball |
US5788591A (en) * | 1994-01-26 | 1998-08-04 | Decker Products Co. | Practice baseball |
US5951420A (en) * | 1997-05-09 | 1999-09-14 | Jas. D. Easton, Inc. | Safety ball |
-
2003
- 2003-12-29 US US10/746,693 patent/US20050143205A1/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US932911A (en) * | 1909-02-05 | 1909-08-31 | Benjamin F Shibe | Base-ball. |
US1530410A (en) * | 1924-09-03 | 1925-03-17 | A J Reach Co | Method of manufacturing baseball centers |
US1624822A (en) * | 1924-10-30 | 1927-04-12 | Beldam George William | Cricket, hockey, and like ball |
US3976295A (en) * | 1974-07-10 | 1976-08-24 | Lannom Manufacturing Company, Inc. | Game ball |
US3976295B1 (en) * | 1974-07-10 | 1990-04-10 | Lannom Manufacturing Co Inc | |
US5788591A (en) * | 1994-01-26 | 1998-08-04 | Decker Products Co. | Practice baseball |
US5951420A (en) * | 1997-05-09 | 1999-09-14 | Jas. D. Easton, Inc. | Safety ball |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140182758A1 (en) * | 2012-07-23 | 2014-07-03 | Kouichi Sakakibara | Anti-skid device for tires |
US20180008868A1 (en) * | 2015-01-22 | 2018-01-11 | Swax Lax Llc | Sports training ball and method of manufacturing a sports training ball |
US10478677B2 (en) * | 2015-01-22 | 2019-11-19 | Swax Lax Llc | Sports training ball and method of manufacturing a sports training ball |
US20180064999A1 (en) * | 2016-09-07 | 2018-03-08 | Swax Lax Llc | Sports training ball with enhanced gripping surface |
US10512824B2 (en) * | 2016-09-07 | 2019-12-24 | Swax Lax Llc | Sports training ball with enhanced gripping surface |
US20210283468A1 (en) * | 2020-03-12 | 2021-09-16 | Swax Lax Llc | Sports training ball having embossed design |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |