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  Shoe sole with air cushionUSPTO Application #: 20060086003Title: Shoe sole with air cushion Abstract: A shoe sole air cushion includes a hollow main body defining an air chamber. The main body includes bottom and top walls, and a peripheral wall connected between the bottom and top walls. The bottom wall includes a plurality of lower pins projecting upwardly from an inner surface of the bottom wall. The top wall includes a plurality of upper pins projecting downwardly from an inner surface of the top wall. The upper and lower pins respectively have tapered ends. The tapered ends of the upper pins are connected respectively to the tapered ends of the lower pins. (end of abstract) Agent: David W. Heid Macpherson Kwok Chen & Heid LLP - San Jose, CA, US Inventor: Yu-Sheng Tseng USPTO Applicaton #: 20060086003 - Class: 036029000 (USPTO) Related Patent Categories: Boots, Shoes, And Leggings, Soles, Cushion, Pneumatic The Patent Description & Claims data below is from USPTO Patent Application 20060086003. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The invention relates to a shoe sole, more particularly to a shoe sole with an air cushion having top and bottom wall faces which can be maintained in flat and even states after inflation. [0003] 2. Description of the Related Art [0004] Referring to FIGS. 1 and 2, a conventional shoe sole air cushion 10 is disposed in a cavity 21 of a shoe sole 20. The air cushion 10 has a hollow main body 11 which includes a bottom wall 111, a top wall 112, a peripheral wall 113 interconnecting the top and bottom walls 112, 111, and an opening 114 formed in the peripheral wall 113. [0005] Each of the top and bottom walls 112, 111 has a plurality of depressions 116. A plurality of inflated portions 117 are confined by the top, bottom and peripheral walls 112, 111, 113. The top wall 112 is sealed to the bottom wall 111 at the depressions 116. [0006] During production, the top, bottom and peripheral walls 112, 111, 113 are first preformed, after which air is introduced into the main body 11 through the opening 114 so as to fill up the inflated portions 117 with air. The opening 114 is then sealed and trimmed, thereby completing the formation of the air cushion 10. Due to pressure of the air inside the inflated portions 117, the top, bottom and peripheral walls 112, 111, 113 expand around the main body 11, and an outer face of the top wall 112 is caused to be formed with a plurality of protrusions 118. During use of the conventional air cushion 10, since the protrusions 118 and the depressions 116 are not formed uniformly on the top wall 112, the pressures on the sole of the wearer are uneven, which may result in injury and discomfort. Furthermore, the conventional air cushion 10 has insufficient shock absorbing properties because of the presence of the depressions 116 and because resiliency is provided only by the inflated portions 117. [0007] FIG. 3 illustrates another conventional air cushion 10', wherein the inflated portions 117' and the depressions 116' are formed more uniformly than those of the aforementioned air cushion 10. However, since the depressions 116' occupy a substantially large area, and since the area of each inflated portion 117' which contacts the wearer's foot is relatively small, the pressure exerted on the foot by the inflated portions 117' can be large and can cause discomfort to the foot. Furthermore, the conventional air cushion 10' similarly has insufficient shock absorbing properties due to the presence of the depressions 116'. SUMMARY OF THE INVENTION [0008] Therefore, the object of the present invention is to provide a shoe sole with an air cushion that is capable of overcoming the aforementioned drawbacks of the prior art. [0009] According to one aspect of this invention, a shoe sole air cushion comprises a hollow main body defining an air chamber. The main body includes bottom and top walls, and a peripheral wall connected between the bottom and top walls. The bottom wall includes a plurality of lower pins projecting upwardly from an inner surface of the bottom wall. The top wall includes a plurality of upper pins projecting downwardly from an inner surface of the top wall. The upper and lower pins respectively have tapered ends. The tapered ends of the upper pins are connected respectively to the tapered ends of the lower pins. [0010] According to another aspect of this invention, a shoe sole comprises a sole unit having a cavity, and an air cushion disposed in the cavity. The air cushion includes a hollow main body defining an air chamber and having bottom and top walls, and a peripheral wall connected between the bottom and top walls. The bottom wall includes a plurality of lower pins projecting upwardly from an inner surface of the bottom wall. The top wall includes a plurality of upper pins projecting downwardly from an inner surface of the top wall. The upper and lower pins respectively have tapered ends. The tapered ends of the upper pins are connected respectively to the tapered ends of the lower pins. BRIEF DESCRIPTION OF THE DRAWINGS [0011] Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiments with reference to the accompanying drawings, of which: [0012] FIG. 1 is an exploded perspective view of a conventional shoe sole; [0013] FIG. 2 is a fragmentary sectional view of the shoe sole of FIG. 1 in an assembled state; [0014] FIG. 3 is a perspective view of a conventional air cushion; [0015] FIG. 4 is an exploded perspective view of the first preferred embodiment of a shoe sole according to the present invention; [0016] FIG. 5 is a partly sectional view of an air cushion of the first preferred embodiment; [0017] FIG. 6 is a fragmentary sectional view of the first preferred embodiment in an assembled state; [0018] FIG. 7 is a fragmentary enlarged sectional view of an upper pin and a lower pin of the first preferred embodiment, and the interconnection therebetween by a neck section; [0019] FIG. 8 is a partly sectional view of the first preferred embodiment in a state of use; [0020] FIG. 9 is a perspective view of the second preferred embodiment of an air cushion of the present invention; and [0021] FIG. 10 is a perspective view of a shoe that incorporates the air cushion of FIG. 9. Continue reading... Full patent description for Shoe sole with air cushion Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Shoe sole with air cushion patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Shoe sole with air cushion or other areas of interest. ### Previous Patent Application: Wearable reusable shoe covers Next Patent Application: Molded foot support Industry Class: Boots, shoes, and leggings ### FreshPatents.com Support Thank you for viewing the Shoe sole with air cushion patent info. IP-related news and info Results in 1.47807 seconds Other interesting Feshpatents.com categories: Electronics: Semiconductor , Audio , Illumination , Connectors , Crypto , |
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