BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a structure of a baseball or softball, in particular, to the structure of a ball cover of a baseball or softball.
2. Description of Related Art
Baseballs and softballs are currently constructed mainly with a ball core wrapped in an outer leather cover. As shown in FIG. 1, the outer cover is made from two figure of 8 shaped pieces “A” which cover the ball core “B” and are sewn together to form the ball.
A raised sewn section is situated where the seams of the opposing ball covers join, fulfilling the required outward appearance of a baseball or softball, but this traditional construction of the ball cover has the following drawbacks:
- 1. The raised sewn section on the outside surface of the ball cover is hand-sewn, requiring skilled labor, and therefore workers possessing greater operational skills. This increases the labor time; and in the current economic climate where worker's costs continue to rise, this increased labor inevitably leads to a higher manufacturing cost of the product.
- 2. The thread on the raised sewn section easily breaks over time, resulting in a short lifespan of the product.
- 3. The source of the leather ball covers is limited, and leather prices are high. Additionally, leather has pores, and with the holes added for sewing this leads to poor waterproofing characteristics of the ball. When the ball is used in humid or rainy weather, moisture or water enters the ball at the seams and soaks the ball core, causing the ball to be heavier, leading to the ball core loosening and the ball changing shape, thereby affecting the characteristics of the ball. There is therefore no way to guarantee the original physical properties of the ball which greatly shortens the lifespan of the ball.
- 4. Leather is a natural material, and the overall uniformity of the surface is uneven, therefore requiring adjustments to the hardness of the ball core, so as to meet requirements for its use.
SUMMARY OF THE INVENTION
The goal of this utility model is to provide an easy processing method for the construction of a baseball and softball, a low production cost and production method that's easy to control, and an increased lifespan of the ball.
In order to achieve the above described goals, this invention solves the drawbacks by:
Providing a construction of a softball or baseball, having: a ball cover constructed from PU material, and formed as one unit from the core to the outside, the ball having a raised sewn section formed on the surface of the ball cover, and the joint lines of the molds for the ball cover situated where the raised sewn section is formed.
To achieve the above, a ball cover structure of the baseball or softball according this invention is made from two opposite and corresponding figure of 8 shaped mold pieces joining to form the cavity of the ball cover, and PU material is used to shape the cavity, thereby shaping the ball from the ball core to the outside, and a raised sewn section is formed along the mold lines of the two joined mold pieces. Constructing the ball in this way has the following advantages:
- 1. Material costs are low, because utilizing PU material to replace leather in the manufacture of the ball cover effectively reduces the material costs;
- 2. Manufacturing costs are low, because utilizing a mold to directly shape the ball cover as one unit, and with a mechanized production process, effectively increases the production rate and lowers the labor costs; additionally the mechanized production ensures uniformity, and produces balls with precise standards of pressure resistance, bounce values and so on;
- 3. Lengthened lifespan of the ball, by shaping the ball cover as one unit the outside integrity is good, and it's difficult for water to enter and the thread can't be broken, therefore the ball is extremely waterproof and the outside environment has little effect on the ball; moreover PU material overall is more durable and resistant thereby increasing the integrity of the ball, and effectively lengthening the lifespan of the ball.
The invention, as well as its many advantages, may be further understood by the following detailed description and drawings in which:
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an exploded perspective view of a prior art baseball and softball.
FIG. 2 is a schematic diagram showing a ball cover shaping mold of the present invention.
FIG. 3 is a schematic diagram showing the working ball cover shaping mold of the present invention.
FIG. 4 is a schematic diagram showing the outside appearance of the ball of the present invention.
FIG. 5 is a sectional diagram along line A-A of FIG. 4.
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 4 and FIG. 5, this invention discloses the construction of the ball cover of a baseball or softball, having the following key points: a ball cover 3 made from PU material to form the ball as one unit from the ball core 5 to the outside, at the same time forming the raised sewn section 4 on the surface of the ball cover 3, and the joint lines of the molds for the ball cover 3 situated where the raised sewn section 4 on the surface of the ball cover is formed.
As shown in FIG. 2 and FIG. 3, the outer cover of this invention is made from two soft figure of 8 shaped mold pieces 1 and 2 joining to form the mold cavity, the two mold pieces 1 and 2 corresponding to the two pieces which are sewn together on a traditional outer cover, and where the mold pieces 1 and 2 join are grooves 11 and 21 to directly form the raised sewn section on the surface of the outer cover. When removing the molds, the joint lines are situated along the raised sewn section 4 of the ball cover 3, thereby ensuring the integrity of the outside of the ball, and unnecessary to trim the ball to achieve the required outside appearance of the ball.
In summarizing the above, the ball cover construction of this invention directly utilizes PU material together with a mold to directly achieve the shape, thereby not only reducing the material costs, but also achieving a mechanized production process to simultaneously increase the production rate and reduce labor costs; in addition, the mechanized process ensures uniformity of the product, and the ability to produce balls with precise standards of pressure resistance, bounce standards, and so on; the ball cover 3 being shaped as one unit ensuring good outside integrity, and it's difficult for water to enter and the thread can't be broken, therefore the ball is extremely waterproof and the outside environment has little effect on the ball; moreover PU material overall is more durable and resistant than leather thereby increasing the integrity of the ball, and effectively lengthening the lifespan of the ball; the color of the PU material can also be changed which is an advantage over leather, therefore allowing for richly colored balls as required.
Many changes and modifications in the above described embodiment of the invention can, of course, be carried out without departing from the scope thereof. Accordingly, to promote the progress in science and the useful arts, the invention is disclosed and is intended to be limited only by the scope of the appended claims.
Patent Application
20120244971
