Inflatable ball
a technology of inflatable balls and balls, applied in the field of balls, can solve the problems of inability to adjust the shape of inflatable balls, inability to adjust the size of inflatable balls,
Inactive Publication Date: 2011-07-28
LO CHUAN HSIN
View PDF14 Cites 16 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
"The present invention provides an inflatable ball with an improved design that overcomes the drawbacks of prior art. The inflatable ball includes an outer cover, a bladder unit, and a valve unit. The bladder unit is made up of an outer bladder, an inner bladder, and a winding thread layer. The inner bladder is placed inside the outer bladder and has a larger elongation percentage than the outer bladder. The winding thread layer is placed inside the inner bladder and has a smaller elongation percentage than the outer bladder. The bladder unit can change from a deflated state to an inflated state. The valve unit is connected to the bladder unit and is positioned to correspond to the through-hole of the outer bladder and the through-hole of the outer cover. This design allows for a more stable inflation of the ball and provides better performance and durability."
Problems solved by technology
Therefore, the inflatable ball may tend to lose a desired shape thereof.
Furthermore, the rubber bladder layer 2 is made from a single layer of rubber such that a leakage problem is likely to occur.
Accordingly, the physical appearance of the inflatable ball may be negatively influenced.
Moreover, when the bladder unit 4 is inflated, the threads of the winding thread layer 402 may be embedded into seams of the leather materials of the outer cover 1, thereby adversely affecting ease of inflation of the rubber layer 401.
A plurality of reinforcing fabric layers (not shown) that have high tensile strength can be attached to an inner surface of the outer cover 1, but may increase cost of production.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0019]Referring to FIGS. 4, 5, and 6, the preferred embodiment of an inflatable ball according to the present invention includes an outer cover 10, a bladder unit 20, and a valve unit 30.
[0020]The outer cover 10 defines a confining chamber 13 therein and is formed with a through-hole 12. In this embodiment, the outer cover 10 is made by sewing pieces of leather materials.
[0021]The bladder unit 20 is disposed in the confining chamber 13 and includes an outer bladder 21, an inner bladder 22, and a winding thread layer 23.
[0022]The outer bladder 21 defines an accommodation chamber 24, and has an internal surrounding surface 213 that faces the accommodation chamber 24, an external surrounding surface 214 that is disposed radially opposite to the internal surrounding surface 213, and a hole-defining portion 211 that is formed with a through-hole 212 registered with the through-hole 12 of the outer cover 10. The inner bladder 22 is disposed in the accommodation chamber 24, defines an infl...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
An inflatable ball includes an outer cover defining a confining chamber therein, a bladder unit disposed in the confining chamber, and a valve unit connected to the bladder unit. The bladder unit includes an outer bladder defining an accommodation chamber, an inner bladder disposed in the accommodation chamber and defining an inflating space, and a winding thread layer disposed in the accommodation chamber and covering an outer surrounding surface of the inner bladder. The outer bladder has a first elongation percentage. The inner bladder has a second elongation percentage greater than the first elongation percentage of the outer bladder. The winding thread layer has a third elongation percentage less than the first elongation percentage of the outer bladder. The bladder unit can be deflated and inflated.
Description
BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]This invention relates to a ball, more particularly to an inflatable ball.[0003]2. Description of the Related Art[0004]Referring to FIG. 1, a conventional inflatable ball includes an outer cover 1, a rubber bladder layer 2 that is disposed in the outer cover 1, and a valve unit 3 that is provided on the rubber bladder layer 2, and that extends through the rubber bladder layer 2 and the outer cover 1. The valve unit 3 includes a base portion 301 that is connected fixedly to an inner surface of the rubber bladder layer 2, and a valve portion 302 that is inserted in the base portion 301. Consequently, when the rubber bladder layer 2 is inflated by pumping air into an internal space defined by the rubber bladder layer 2 through the valve unit 3, the inflatable ball can be used.[0005]However, the conventional inflatable ball has the following disadvantages. Since the rubber bladder layer 2 is made by vulcanizing a rubber mat...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & AuthorityApplications(United States)
IPC IPC(8): A63B41/02A63B41/04
CPCA63B41/02A63B41/00
InventorLO, CHUAN-HSIN
OwnerLO CHUAN HSIN